prompt: 
  We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Have `ConanFile.run()` be able to get `stderr` just like it does for `stdout`
  Somestimes recipes call to programs that outùt important info to stderr instead of stdout, and Conan currently provides no good way to fetch that info
  
  
  _Originally posted by @RubenRBS in https://github.com/conan-io/conan-center-index/pull/20979#discussion_r1395712850_
              
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  
  --- BEGIN FILE ---
  ```
  ### conans/model/conan_file.py
  import os
  from pathlib import Path
  
  from conan.api.output import ConanOutput, Color
  from conans.client.subsystems import command_env_wrapper
  from conans.errors import ConanException
  from conans.model.build_info import MockInfoProperty
  from conans.model.conf import Conf
  from conans.model.dependencies import ConanFileDependencies
  from conans.model.layout import Folders, Infos, Layouts
  from conans.model.options import Options
  
  from conans.model.requires import Requirements
  from conans.model.settings import Settings
  
  
  class ConanFile:
      """
      The base class for all package recipes
      """
  
      # Reference
      name = None
      version = None  # Any str, can be "1.1" or whatever
      user = None
      channel = None
  
      # Metadata
      url = None  # The URL where this File is located, as github, to collaborate in package
      license = None
      author = None
      description = None
      topics = None
      homepage = None
  
      build_policy = None
      upload_policy = None
  
      exports = None
      exports_sources = None
  
      generators = []
      revision_mode = "hash"
  
      # Binary model: Settings and Options
      settings = None
      options = None
      default_options = None
      default_build_options = None
      package_type = None
  
      implements = []
  
      provides = None
      deprecated = None
  
      win_bash = None
      win_bash_run = None  # For run scope
  
      _conan_is_consumer = False
  
      # #### Requirements
      requires = None
      tool_requires = None
      build_requires = None
      test_requires = None
      tested_reference_str = None
  
      no_copy_source = False
      recipe_folder = None
  
      # Package information
      cpp = None
      buildenv_info = None
      runenv_info = None
      conf_info = None
  
      def __init__(self, display_name=""):
          self.display_name = display_name
          # something that can run commands, as os.sytem
  
          self._conan_helpers = None
          from conan.tools.env import Environment
          self.buildenv_info = Environment()
          self.runenv_info = Environment()
          # At the moment only for build_requires, others will be ignored
          self.conf_info = Conf()
          self.info = None
          self._conan_buildenv = None  # The profile buildenv, will be assigned initialize()
          self._conan_runenv = None
          self._conan_node = None  # access to container Node object, to access info, context, deps...
  
          if isinstance(self.generators, str):
              self.generators = [self.generators]
          if isinstance(self.settings, str):
              self.settings = [self.settings]
          self.requires = Requirements(self.requires, self.build_requires, self.test_requires,
                                       self.tool_requires)
  
          self.options = Options(self.options or {}, self.default_options)
  
          if isinstance(self.topics, str):
              self.topics = [self.topics]
          if isinstance(self.provides, str):
              self.provides = [self.provides]
  
          # user declared variables
          self.user_info = MockInfoProperty("user_info")
          self.env_info = MockInfoProperty("env_info")
          self._conan_dependencies = None
  
          if not hasattr(self, "virtualbuildenv"):  # Allow the user to override it with True or False
              self.virtualbuildenv = True
          if not hasattr(self, "virtualrunenv"):  # Allow the user to override it with True or False
              self.virtualrunenv = True
  
          self.env_scripts = {}  # Accumulate the env scripts generated in order
          self.system_requires = {}  # Read only, internal {"apt": []}
  
          # layout() method related variables:
          self.folders = Folders()
          self.cpp = Infos()
          self.layouts = Layouts()
  
      def serialize(self):
          result = {}
  
          for a in ("name", "user", "channel", "url", "license",
                    "author", "description", "homepage", "build_policy", "upload_policy",
                    "revision_mode", "provides", "deprecated", "win_bash", "win_bash_run",
                    "default_options", "options_description"):
              v = getattr(self, a, None)
              result[a] = v
  
          result["version"] = str(self.version) if self.version is not None else None
          result["topics"] = list(self.topics) if self.topics is not None else None
          result["package_type"] = str(self.package_type)
  
          settings = self.settings
          if settings is not None:
              result["settings"] = settings.serialize() if isinstance(settings, Settings) else list(settings)
  
          result["options"] = self.options.serialize()
          result["options_definitions"] = self.options.possible_values
  
          if self.generators is not None:
              result["generators"] = list(self.generators)
          if self.license is not None:
              result["license"] = list(self.license) if not isinstance(self.license, str) else self.license
  
          result["requires"] = self.requires.serialize()
  
          if hasattr(self, "python_requires"):
              result["python_requires"] = self.python_requires.serialize()
          else:
              result["python_requires"] = None
          result["system_requires"] = self.system_requires
  
          result["recipe_folder"] = self.recipe_folder
          result["source_folder"] = self.source_folder
          result["build_folder"] = self.build_folder
          result["generators_folder"] = self.generators_folder
          result["package_folder"] = self.package_folder
  
          result["cpp_info"] = self.cpp_info.serialize()
          result["conf_info"] = self.conf_info.serialize()
          result["label"] = self.display_name
          return result
  
      @property
      def output(self):
          # an output stream (writeln, info, warn error)
          scope = self.display_name
          if not scope:
              scope = self.ref if self._conan_node else ""
          return ConanOutput(scope=scope)
  
      @property
      def context(self):
          return self._conan_node.context
  
      @property
      def dependencies(self):
          # Caching it, this object is requested many times
          if self._conan_dependencies is None:
              self._conan_dependencies = ConanFileDependencies.from_node(self._conan_node)
          return self._conan_dependencies
  
      @property
      def ref(self):
          return self._conan_node.ref
  
      @property
      def pref(self):
          return self._conan_node.pref
  
      @property
      def buildenv(self):
          # Lazy computation of the package buildenv based on the profileone
          from conan.tools.env import Environment
          if not isinstance(self._conan_buildenv, Environment):
              self._conan_buildenv = self._conan_buildenv.get_profile_env(self.ref,
                                                                          self._conan_is_consumer)
          return self._conan_buildenv
  
      @property
      def runenv(self):
          # Lazy computation of the package runenv based on the profile one
          from conan.tools.env import Environment
          if not isinstance(self._conan_runenv, Environment):
              self._conan_runenv = self._conan_runenv.get_profile_env(self.ref,
                                                                      self._conan_is_consumer)
          return self._conan_runenv
  
      @property
      def cpp_info(self):
          """
          Same as using ``self.cpp.package`` in the ``layout()`` method. Use it if you need to read
          the ``package_folder`` to locate the already located artifacts.
          """
          return self.cpp.package
  
      @cpp_info.setter
      def cpp_info(self, value):
          self.cpp.package = value
  
      @property
      def source_folder(self):
          """
          The folder in which the source code lives. The path is built joining the base directory
          (a cache directory when running in the cache or the ``output folder`` when running locally)
          with the value of ``folders.source`` if declared in the ``layout()`` method.
  
          :return: A string with the path to the source folder.
          """
          return self.folders.source_folder
  
      @property
      def source_path(self) -> Path:
          assert self.source_folder is not None, "`source_folder` is `None`"
          return Path(self.source_folder)
  
      @property
      def export_sources_folder(self):
          """
          The value depends on the method you access it:
  
              - At ``source(self)``: Points to the base source folder (that means self.source_folder but
                without taking into account the ``folders.source`` declared in the ``layout()`` method).
                The declared `exports_sources` are copied to that base source folder always.
              - At ``exports_sources(self)``: Points to the folder in the cache where the export sources
                have to be copied.
  
          :return: A string with the mentioned path.
          """
          return self.folders.base_export_sources
  
      @property
      def export_sources_path(self) -> Path:
          assert self.export_sources_folder is not None, "`export_sources_folder` is `None`"
          return Path(self.export_sources_folder)
  
      @property
      def export_folder(self):
          return self.folders.base_export
  
      @property
      def export_path(self) -> Path:
          assert self.export_folder is not None, "`export_folder` is `None`"
          return Path(self.export_folder)
  
      @property
      def build_folder(self):
          """
          The folder used to build the source code. The path is built joining the base directory (a cache
          directory when running in the cache or the ``output folder`` when running locally) with
          the value of ``folders.build`` if declared in the ``layout()`` method.
  
          :return: A string with the path to the build folder.
          """
          return self.folders.build_folder
  
      @property
      def recipe_metadata_folder(self):
          return self.folders.recipe_metadata_folder
  
      @property
      def package_metadata_folder(self):
          return self.folders.package_metadata_folder
  
      @property
      def build_path(self) -> Path:
          assert self.build_folder is not None, "`build_folder` is `None`"
          return Path(self.build_folder)
  
      @property
      def package_folder(self):
          """
          The folder to copy the final artifacts for the binary package. In the local cache a package
          folder is created for every different package ID.
  
          :return: A string with the path to the package folder.
          """
          return self.folders.base_package
  
      @property
      def generators_folder(self):
          return self.folders.generators_folder
  
      @property
      def package_path(self) -> Path:
          assert self.package_folder is not None, "`package_folder` is `None`"
          return Path(self.package_folder)
  
      @property
      def generators_path(self) -> Path:
          assert self.generators_folder is not None, "`generators_folder` is `None`"
          return Path(self.generators_folder)
  
      def run(self, command, stdout=None, cwd=None, ignore_errors=False, env="", quiet=False,
              shell=True, scope="build"):
          # NOTE: "self.win_bash" is the new parameter "win_bash" for Conan 2.0
          command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)
          if env == "":  # This default allows not breaking for users with ``env=None`` indicating
              # they don't want any env-file applied
              env = "conanbuild" if scope == "build" else "conanrun"
  
          env = [env] if env and isinstance(env, str) else (env or [])
          assert isinstance(env, list), "env argument to ConanFile.run() should be a list"
          envfiles_folder = self.generators_folder or os.getcwd()
          wrapped_cmd = command_env_wrapper(self, command, env, envfiles_folder=envfiles_folder)
          from conans.util.runners import conan_run
          if not quiet:
              ConanOutput().writeln(f"{self.display_name}: RUN: {command}", fg=Color.BRIGHT_BLUE)
          retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)
          if not quiet:
              ConanOutput().writeln("")
  
          if not ignore_errors and retcode != 0:
              raise ConanException("Error %d while executing" % retcode)
  
          return retcode
  
      def __repr__(self):
          return self.display_name
  
      def set_deploy_folder(self, deploy_folder):
          self.cpp_info.deploy_base_folder(self.package_folder, deploy_folder)
          self.buildenv_info.deploy_base_folder(self.package_folder, deploy_folder)
          self.runenv_info.deploy_base_folder(self.package_folder, deploy_folder)
          self.folders.set_base_package(deploy_folder)
  
  ```
  --- END FILE ---
  
  Please first localize the bug based on the issue statement, and then generate *SEARCH/REPLACE* edits to fix the issue.
  
  Every *SEARCH/REPLACE* edit must use this format:
  1. The file path
  2. The start of search block: <<<<<<< SEARCH
  3. A contiguous chunk of lines to search for in the existing source code
  4. The dividing line: =======
  5. The lines to replace into the source code
  6. The end of the replace block: >>>>>>> REPLACE
  
  Here is an example:
  
  ```python
  ### mathweb/flask/app.py
  <<<<<<< SEARCH
  from flask import Flask
  =======
  import math
  from flask import Flask
  >>>>>>> REPLACE
  ```
  
  Please note that the *SEARCH/REPLACE* edit REQUIRES PROPER INDENTATION. If you would like to add the line '        print(x)', you must fully write that out, with all those spaces before the code!
  Wrap the *SEARCH/REPLACE* edit in blocks ```python...```.
  
instance: {"FAIL_TO_PASS": ["conans/test/functional/conanfile/runner_test.py::RunnerTest::test_custom_stream_stderr"], "PASS_TO_PASS": ["conans/test/functional/conanfile/runner_test.py::RunnerTest::test_ignore_error", "conans/test/functional/conanfile/runner_test.py::RunnerTest::test_custom_stream_error", "conans/test/functional/conanfile/runner_test.py::RunnerTest::test_runner_capture_output"], "base_commit": "a12a08dc41ae3138044c65b82ee51eb2ed672e9c", "created_at": "2023-11-16T16:14:15Z", "hints_text": "", "instance_id": "conan-io__conan-15121", "patch": "diff --git a/conans/model/conan_file.py b/conans/model/conan_file.py\n--- a/conans/model/conan_file.py\n+++ b/conans/model/conan_file.py\n@@ -318,7 +318,7 @@ def generators_path(self) -> Path:\n         return Path(self.generators_folder)\n \n     def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet=False,\n-            shell=True, scope=\"build\"):\n+            shell=True, scope=\"build\", stderr=None):\n         # NOTE: \"self.win_bash\" is the new parameter \"win_bash\" for Conan 2.0\n         command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)\n         if env == \"\":  # This default allows not breaking for users with ``env=None`` indicating\n@@ -332,7 +332,7 @@ def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet\n         from conans.util.runners import conan_run\n         if not quiet:\n             ConanOutput().writeln(f\"{self.display_name}: RUN: {command}\", fg=Color.BRIGHT_BLUE)\n-        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)\n+        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, stderr=stderr, shell=shell)\n         if not quiet:\n             ConanOutput().writeln(\"\")\n \n", "problem_statement": "Have `ConanFile.run()` be able to get `stderr` just like it does for `stdout`\nSomestimes recipes call to programs that out\u00f9t important info to stderr instead of stdout, and Conan currently provides no good way to fetch that info\r\n\r\n\r\n_Originally posted by @RubenRBS in https://github.com/conan-io/conan-center-index/pull/20979#discussion_r1395712850_\r\n            \n", "repo": "conan-io/conan", "test_patch": "diff --git a/conans/test/functional/conanfile/runner_test.py b/conans/test/functional/conanfile/runner_test.py\n--- a/conans/test/functional/conanfile/runner_test.py\n+++ b/conans/test/functional/conanfile/runner_test.py\n@@ -56,3 +56,18 @@ def source(self):\n         client.save({\"conanfile.py\": conanfile})\n         client.run(\"source .\")\n         self.assertIn('conanfile.py: Buffer got msgs Hello', client.out)\n+\n+    def test_custom_stream_stderr(self):\n+        conanfile = textwrap.dedent(\"\"\"\n+            from io import StringIO\n+            from conan import ConanFile\n+            class Pkg(ConanFile):\n+                def source(self):\n+                    my_buf = StringIO()\n+                    self.run('echo Hello 1>&2', stderr=my_buf)\n+                    self.output.info(\"Buffer got stderr msgs {}\".format(my_buf.getvalue()))\n+            \"\"\")\n+        client = TestClient()\n+        client.save({\"conanfile.py\": conanfile})\n+        client.run(\"source .\")\n+        self.assertIn('conanfile.py: Buffer got stderr msgs Hello', client.out)\n", "version": "2.0"}
parsed_commit_content: {"file_diffs":[{"old_file_content":"import os\nfrom pathlib import Path\n\nfrom conan.api.output import ConanOutput, Color\nfrom conans.client.subsystems import command_env_wrapper\nfrom conans.errors import ConanException\nfrom conans.model.build_info import MockInfoProperty\nfrom conans.model.conf import Conf\nfrom conans.model.dependencies import ConanFileDependencies\nfrom conans.model.layout import Folders, Infos, Layouts\nfrom conans.model.options import Options\n\nfrom conans.model.requires import Requirements\nfrom conans.model.settings import Settings\n\n\nclass ConanFile:\n    \"\"\"\n    The base class for all package recipes\n    \"\"\"\n\n    # Reference\n    name = None\n    version = None  # Any str, can be \"1.1\" or whatever\n    user = None\n    channel = None\n\n    # Metadata\n    url = None  # The URL where this File is located, as github, to collaborate in package\n    license = None\n    author = None\n    description = None\n    topics = None\n    homepage = None\n\n    build_policy = None\n    upload_policy = None\n\n    exports = None\n    exports_sources = None\n\n    generators = []\n    revision_mode = \"hash\"\n\n    # Binary model: Settings and Options\n    settings = None\n    options = None\n    default_options = None\n    default_build_options = None\n    package_type = None\n\n    implements = []\n\n    provides = None\n    deprecated = None\n\n    win_bash = None\n    win_bash_run = None  # For run scope\n\n    _conan_is_consumer = False\n\n    # #### Requirements\n    requires = None\n    tool_requires = None\n    build_requires = None\n    test_requires = None\n    tested_reference_str = None\n\n    no_copy_source = False\n    recipe_folder = None\n\n    # Package information\n    cpp = None\n    buildenv_info = None\n    runenv_info = None\n    conf_info = None\n\n    def __init__(self, display_name=\"\"):\n        self.display_name = display_name\n        # something that can run commands, as os.sytem\n\n        self._conan_helpers = None\n        from conan.tools.env import Environment\n        self.buildenv_info = Environment()\n        self.runenv_info = Environment()\n        # At the moment only for build_requires, others will be ignored\n        self.conf_info = Conf()\n        self.info = None\n        self._conan_buildenv = None  # The profile buildenv, will be assigned initialize()\n        self._conan_runenv = None\n        self._conan_node = None  # access to container Node object, to access info, context, deps...\n\n        if isinstance(self.generators, str):\n            self.generators = [self.generators]\n        if isinstance(self.settings, str):\n            self.settings = [self.settings]\n        self.requires = Requirements(self.requires, self.build_requires, self.test_requires,\n                                     self.tool_requires)\n\n        self.options = Options(self.options or {}, self.default_options)\n\n        if isinstance(self.topics, str):\n            self.topics = [self.topics]\n        if isinstance(self.provides, str):\n            self.provides = [self.provides]\n\n        # user declared variables\n        self.user_info = MockInfoProperty(\"user_info\")\n        self.env_info = MockInfoProperty(\"env_info\")\n        self._conan_dependencies = None\n\n        if not hasattr(self, \"virtualbuildenv\"):  # Allow the user to override it with True or False\n            self.virtualbuildenv = True\n        if not hasattr(self, \"virtualrunenv\"):  # Allow the user to override it with True or False\n            self.virtualrunenv = True\n\n        self.env_scripts = {}  # Accumulate the env scripts generated in order\n        self.system_requires = {}  # Read only, internal {\"apt\": []}\n\n        # layout() method related variables:\n        self.folders = Folders()\n        self.cpp = Infos()\n        self.layouts = Layouts()\n\n    def serialize(self):\n        result = {}\n\n        for a in (\"name\", \"user\", \"channel\", \"url\", \"license\",\n                  \"author\", \"description\", \"homepage\", \"build_policy\", \"upload_policy\",\n                  \"revision_mode\", \"provides\", \"deprecated\", \"win_bash\", \"win_bash_run\",\n                  \"default_options\", \"options_description\"):\n            v = getattr(self, a, None)\n            result[a] = v\n\n        result[\"version\"] = str(self.version) if self.version is not None else None\n        result[\"topics\"] = list(self.topics) if self.topics is not None else None\n        result[\"package_type\"] = str(self.package_type)\n\n        settings = self.settings\n        if settings is not None:\n            result[\"settings\"] = settings.serialize() if isinstance(settings, Settings) else list(settings)\n\n        result[\"options\"] = self.options.serialize()\n        result[\"options_definitions\"] = self.options.possible_values\n\n        if self.generators is not None:\n            result[\"generators\"] = list(self.generators)\n        if self.license is not None:\n            result[\"license\"] = list(self.license) if not isinstance(self.license, str) else self.license\n\n        result[\"requires\"] = self.requires.serialize()\n\n        if hasattr(self, \"python_requires\"):\n            result[\"python_requires\"] = self.python_requires.serialize()\n        else:\n            result[\"python_requires\"] = None\n        result[\"system_requires\"] = self.system_requires\n\n        result[\"recipe_folder\"] = self.recipe_folder\n        result[\"source_folder\"] = self.source_folder\n        result[\"build_folder\"] = self.build_folder\n        result[\"generators_folder\"] = self.generators_folder\n        result[\"package_folder\"] = self.package_folder\n\n        result[\"cpp_info\"] = self.cpp_info.serialize()\n        result[\"conf_info\"] = self.conf_info.serialize()\n        result[\"label\"] = self.display_name\n        return result\n\n    @property\n    def output(self):\n        # an output stream (writeln, info, warn error)\n        scope = self.display_name\n        if not scope:\n            scope = self.ref if self._conan_node else \"\"\n        return ConanOutput(scope=scope)\n\n    @property\n    def context(self):\n        return self._conan_node.context\n\n    @property\n    def dependencies(self):\n        # Caching it, this object is requested many times\n        if self._conan_dependencies is None:\n            self._conan_dependencies = ConanFileDependencies.from_node(self._conan_node)\n        return self._conan_dependencies\n\n    @property\n    def ref(self):\n        return self._conan_node.ref\n\n    @property\n    def pref(self):\n        return self._conan_node.pref\n\n    @property\n    def buildenv(self):\n        # Lazy computation of the package buildenv based on the profileone\n        from conan.tools.env import Environment\n        if not isinstance(self._conan_buildenv, Environment):\n            self._conan_buildenv = self._conan_buildenv.get_profile_env(self.ref,\n                                                                        self._conan_is_consumer)\n        return self._conan_buildenv\n\n    @property\n    def runenv(self):\n        # Lazy computation of the package runenv based on the profile one\n        from conan.tools.env import Environment\n        if not isinstance(self._conan_runenv, Environment):\n            self._conan_runenv = self._conan_runenv.get_profile_env(self.ref,\n                                                                    self._conan_is_consumer)\n        return self._conan_runenv\n\n    @property\n    def cpp_info(self):\n        \"\"\"\n        Same as using ``self.cpp.package`` in the ``layout()`` method. Use it if you need to read\n        the ``package_folder`` to locate the already located artifacts.\n        \"\"\"\n        return self.cpp.package\n\n    @cpp_info.setter\n    def cpp_info(self, value):\n        self.cpp.package = value\n\n    @property\n    def source_folder(self):\n        \"\"\"\n        The folder in which the source code lives. The path is built joining the base directory\n        (a cache directory when running in the cache or the ``output folder`` when running locally)\n        with the value of ``folders.source`` if declared in the ``layout()`` method.\n\n        :return: A string with the path to the source folder.\n        \"\"\"\n        return self.folders.source_folder\n\n    @property\n    def source_path(self) -> Path:\n        assert self.source_folder is not None, \"`source_folder` is `None`\"\n        return Path(self.source_folder)\n\n    @property\n    def export_sources_folder(self):\n        \"\"\"\n        The value depends on the method you access it:\n\n            - At ``source(self)``: Points to the base source folder (that means self.source_folder but\n              without taking into account the ``folders.source`` declared in the ``layout()`` method).\n              The declared `exports_sources` are copied to that base source folder always.\n            - At ``exports_sources(self)``: Points to the folder in the cache where the export sources\n              have to be copied.\n\n        :return: A string with the mentioned path.\n        \"\"\"\n        return self.folders.base_export_sources\n\n    @property\n    def export_sources_path(self) -> Path:\n        assert self.export_sources_folder is not None, \"`export_sources_folder` is `None`\"\n        return Path(self.export_sources_folder)\n\n    @property\n    def export_folder(self):\n        return self.folders.base_export\n\n    @property\n    def export_path(self) -> Path:\n        assert self.export_folder is not None, \"`export_folder` is `None`\"\n        return Path(self.export_folder)\n\n    @property\n    def build_folder(self):\n        \"\"\"\n        The folder used to build the source code. The path is built joining the base directory (a cache\n        directory when running in the cache or the ``output folder`` when running locally) with\n        the value of ``folders.build`` if declared in the ``layout()`` method.\n\n        :return: A string with the path to the build folder.\n        \"\"\"\n        return self.folders.build_folder\n\n    @property\n    def recipe_metadata_folder(self):\n        return self.folders.recipe_metadata_folder\n\n    @property\n    def package_metadata_folder(self):\n        return self.folders.package_metadata_folder\n\n    @property\n    def build_path(self) -> Path:\n        assert self.build_folder is not None, \"`build_folder` is `None`\"\n        return Path(self.build_folder)\n\n    @property\n    def package_folder(self):\n        \"\"\"\n        The folder to copy the final artifacts for the binary package. In the local cache a package\n        folder is created for every different package ID.\n\n        :return: A string with the path to the package folder.\n        \"\"\"\n        return self.folders.base_package\n\n    @property\n    def generators_folder(self):\n        return self.folders.generators_folder\n\n    @property\n    def package_path(self) -> Path:\n        assert self.package_folder is not None, \"`package_folder` is `None`\"\n        return Path(self.package_folder)\n\n    @property\n    def generators_path(self) -> Path:\n        assert self.generators_folder is not None, \"`generators_folder` is `None`\"\n        return Path(self.generators_folder)\n\n    def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet=False,\n            shell=True, scope=\"build\"):\n        # NOTE: \"self.win_bash\" is the new parameter \"win_bash\" for Conan 2.0\n        command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)\n        if env == \"\":  # This default allows not breaking for users with ``env=None`` indicating\n            # they don't want any env-file applied\n            env = \"conanbuild\" if scope == \"build\" else \"conanrun\"\n\n        env = [env] if env and isinstance(env, str) else (env or [])\n        assert isinstance(env, list), \"env argument to ConanFile.run() should be a list\"\n        envfiles_folder = self.generators_folder or os.getcwd()\n        wrapped_cmd = command_env_wrapper(self, command, env, envfiles_folder=envfiles_folder)\n        from conans.util.runners import conan_run\n        if not quiet:\n            ConanOutput().writeln(f\"{self.display_name}: RUN: {command}\", fg=Color.BRIGHT_BLUE)\n        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)\n        if not quiet:\n            ConanOutput().writeln(\"\")\n\n        if not ignore_errors and retcode != 0:\n            raise ConanException(\"Error %d while executing\" % retcode)\n\n        return retcode\n\n    def __repr__(self):\n        return self.display_name\n\n    def set_deploy_folder(self, deploy_folder):\n        self.cpp_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.buildenv_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.runenv_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.folders.set_base_package(deploy_folder)\n","new_file_content":"import os\nfrom pathlib import Path\n\nfrom conan.api.output import ConanOutput, Color\nfrom conans.client.subsystems import command_env_wrapper\nfrom conans.errors import ConanException\nfrom conans.model.build_info import MockInfoProperty\nfrom conans.model.conf import Conf\nfrom conans.model.dependencies import ConanFileDependencies\nfrom conans.model.layout import Folders, Infos, Layouts\nfrom conans.model.options import Options\n\nfrom conans.model.requires import Requirements\nfrom conans.model.settings import Settings\n\n\nclass ConanFile:\n    \"\"\"\n    The base class for all package recipes\n    \"\"\"\n\n    # Reference\n    name = None\n    version = None  # Any str, can be \"1.1\" or whatever\n    user = None\n    channel = None\n\n    # Metadata\n    url = None  # The URL where this File is located, as github, to collaborate in package\n    license = None\n    author = None\n    description = None\n    topics = None\n    homepage = None\n\n    build_policy = None\n    upload_policy = None\n\n    exports = None\n    exports_sources = None\n\n    generators = []\n    revision_mode = \"hash\"\n\n    # Binary model: Settings and Options\n    settings = None\n    options = None\n    default_options = None\n    default_build_options = None\n    package_type = None\n\n    implements = []\n\n    provides = None\n    deprecated = None\n\n    win_bash = None\n    win_bash_run = None  # For run scope\n\n    _conan_is_consumer = False\n\n    # #### Requirements\n    requires = None\n    tool_requires = None\n    build_requires = None\n    test_requires = None\n    tested_reference_str = None\n\n    no_copy_source = False\n    recipe_folder = None\n\n    # Package information\n    cpp = None\n    buildenv_info = None\n    runenv_info = None\n    conf_info = None\n\n    def __init__(self, display_name=\"\"):\n        self.display_name = display_name\n        # something that can run commands, as os.sytem\n\n        self._conan_helpers = None\n        from conan.tools.env import Environment\n        self.buildenv_info = Environment()\n        self.runenv_info = Environment()\n        # At the moment only for build_requires, others will be ignored\n        self.conf_info = Conf()\n        self.info = None\n        self._conan_buildenv = None  # The profile buildenv, will be assigned initialize()\n        self._conan_runenv = None\n        self._conan_node = None  # access to container Node object, to access info, context, deps...\n\n        if isinstance(self.generators, str):\n            self.generators = [self.generators]\n        if isinstance(self.settings, str):\n            self.settings = [self.settings]\n        self.requires = Requirements(self.requires, self.build_requires, self.test_requires,\n                                     self.tool_requires)\n\n        self.options = Options(self.options or {}, self.default_options)\n\n        if isinstance(self.topics, str):\n            self.topics = [self.topics]\n        if isinstance(self.provides, str):\n            self.provides = [self.provides]\n\n        # user declared variables\n        self.user_info = MockInfoProperty(\"user_info\")\n        self.env_info = MockInfoProperty(\"env_info\")\n        self._conan_dependencies = None\n\n        if not hasattr(self, \"virtualbuildenv\"):  # Allow the user to override it with True or False\n            self.virtualbuildenv = True\n        if not hasattr(self, \"virtualrunenv\"):  # Allow the user to override it with True or False\n            self.virtualrunenv = True\n\n        self.env_scripts = {}  # Accumulate the env scripts generated in order\n        self.system_requires = {}  # Read only, internal {\"apt\": []}\n\n        # layout() method related variables:\n        self.folders = Folders()\n        self.cpp = Infos()\n        self.layouts = Layouts()\n\n    def serialize(self):\n        result = {}\n\n        for a in (\"name\", \"user\", \"channel\", \"url\", \"license\",\n                  \"author\", \"description\", \"homepage\", \"build_policy\", \"upload_policy\",\n                  \"revision_mode\", \"provides\", \"deprecated\", \"win_bash\", \"win_bash_run\",\n                  \"default_options\", \"options_description\"):\n            v = getattr(self, a, None)\n            result[a] = v\n\n        result[\"version\"] = str(self.version) if self.version is not None else None\n        result[\"topics\"] = list(self.topics) if self.topics is not None else None\n        result[\"package_type\"] = str(self.package_type)\n\n        settings = self.settings\n        if settings is not None:\n            result[\"settings\"] = settings.serialize() if isinstance(settings, Settings) else list(settings)\n\n        result[\"options\"] = self.options.serialize()\n        result[\"options_definitions\"] = self.options.possible_values\n\n        if self.generators is not None:\n            result[\"generators\"] = list(self.generators)\n        if self.license is not None:\n            result[\"license\"] = list(self.license) if not isinstance(self.license, str) else self.license\n\n        result[\"requires\"] = self.requires.serialize()\n\n        if hasattr(self, \"python_requires\"):\n            result[\"python_requires\"] = self.python_requires.serialize()\n        else:\n            result[\"python_requires\"] = None\n        result[\"system_requires\"] = self.system_requires\n\n        result[\"recipe_folder\"] = self.recipe_folder\n        result[\"source_folder\"] = self.source_folder\n        result[\"build_folder\"] = self.build_folder\n        result[\"generators_folder\"] = self.generators_folder\n        result[\"package_folder\"] = self.package_folder\n\n        result[\"cpp_info\"] = self.cpp_info.serialize()\n        result[\"conf_info\"] = self.conf_info.serialize()\n        result[\"label\"] = self.display_name\n        return result\n\n    @property\n    def output(self):\n        # an output stream (writeln, info, warn error)\n        scope = self.display_name\n        if not scope:\n            scope = self.ref if self._conan_node else \"\"\n        return ConanOutput(scope=scope)\n\n    @property\n    def context(self):\n        return self._conan_node.context\n\n    @property\n    def dependencies(self):\n        # Caching it, this object is requested many times\n        if self._conan_dependencies is None:\n            self._conan_dependencies = ConanFileDependencies.from_node(self._conan_node)\n        return self._conan_dependencies\n\n    @property\n    def ref(self):\n        return self._conan_node.ref\n\n    @property\n    def pref(self):\n        return self._conan_node.pref\n\n    @property\n    def buildenv(self):\n        # Lazy computation of the package buildenv based on the profileone\n        from conan.tools.env import Environment\n        if not isinstance(self._conan_buildenv, Environment):\n            self._conan_buildenv = self._conan_buildenv.get_profile_env(self.ref,\n                                                                        self._conan_is_consumer)\n        return self._conan_buildenv\n\n    @property\n    def runenv(self):\n        # Lazy computation of the package runenv based on the profile one\n        from conan.tools.env import Environment\n        if not isinstance(self._conan_runenv, Environment):\n            self._conan_runenv = self._conan_runenv.get_profile_env(self.ref,\n                                                                    self._conan_is_consumer)\n        return self._conan_runenv\n\n    @property\n    def cpp_info(self):\n        \"\"\"\n        Same as using ``self.cpp.package`` in the ``layout()`` method. Use it if you need to read\n        the ``package_folder`` to locate the already located artifacts.\n        \"\"\"\n        return self.cpp.package\n\n    @cpp_info.setter\n    def cpp_info(self, value):\n        self.cpp.package = value\n\n    @property\n    def source_folder(self):\n        \"\"\"\n        The folder in which the source code lives. The path is built joining the base directory\n        (a cache directory when running in the cache or the ``output folder`` when running locally)\n        with the value of ``folders.source`` if declared in the ``layout()`` method.\n\n        :return: A string with the path to the source folder.\n        \"\"\"\n        return self.folders.source_folder\n\n    @property\n    def source_path(self) -> Path:\n        assert self.source_folder is not None, \"`source_folder` is `None`\"\n        return Path(self.source_folder)\n\n    @property\n    def export_sources_folder(self):\n        \"\"\"\n        The value depends on the method you access it:\n\n            - At ``source(self)``: Points to the base source folder (that means self.source_folder but\n              without taking into account the ``folders.source`` declared in the ``layout()`` method).\n              The declared `exports_sources` are copied to that base source folder always.\n            - At ``exports_sources(self)``: Points to the folder in the cache where the export sources\n              have to be copied.\n\n        :return: A string with the mentioned path.\n        \"\"\"\n        return self.folders.base_export_sources\n\n    @property\n    def export_sources_path(self) -> Path:\n        assert self.export_sources_folder is not None, \"`export_sources_folder` is `None`\"\n        return Path(self.export_sources_folder)\n\n    @property\n    def export_folder(self):\n        return self.folders.base_export\n\n    @property\n    def export_path(self) -> Path:\n        assert self.export_folder is not None, \"`export_folder` is `None`\"\n        return Path(self.export_folder)\n\n    @property\n    def build_folder(self):\n        \"\"\"\n        The folder used to build the source code. The path is built joining the base directory (a cache\n        directory when running in the cache or the ``output folder`` when running locally) with\n        the value of ``folders.build`` if declared in the ``layout()`` method.\n\n        :return: A string with the path to the build folder.\n        \"\"\"\n        return self.folders.build_folder\n\n    @property\n    def recipe_metadata_folder(self):\n        return self.folders.recipe_metadata_folder\n\n    @property\n    def package_metadata_folder(self):\n        return self.folders.package_metadata_folder\n\n    @property\n    def build_path(self) -> Path:\n        assert self.build_folder is not None, \"`build_folder` is `None`\"\n        return Path(self.build_folder)\n\n    @property\n    def package_folder(self):\n        \"\"\"\n        The folder to copy the final artifacts for the binary package. In the local cache a package\n        folder is created for every different package ID.\n\n        :return: A string with the path to the package folder.\n        \"\"\"\n        return self.folders.base_package\n\n    @property\n    def generators_folder(self):\n        return self.folders.generators_folder\n\n    @property\n    def package_path(self) -> Path:\n        assert self.package_folder is not None, \"`package_folder` is `None`\"\n        return Path(self.package_folder)\n\n    @property\n    def generators_path(self) -> Path:\n        assert self.generators_folder is not None, \"`generators_folder` is `None`\"\n        return Path(self.generators_folder)\n\n    def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet=False,\n            shell=True, scope=\"build\", stderr=None):\n        # NOTE: \"self.win_bash\" is the new parameter \"win_bash\" for Conan 2.0\n        command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)\n        if env == \"\":  # This default allows not breaking for users with ``env=None`` indicating\n            # they don't want any env-file applied\n            env = \"conanbuild\" if scope == \"build\" else \"conanrun\"\n\n        env = [env] if env and isinstance(env, str) else (env or [])\n        assert isinstance(env, list), \"env argument to ConanFile.run() should be a list\"\n        envfiles_folder = self.generators_folder or os.getcwd()\n        wrapped_cmd = command_env_wrapper(self, command, env, envfiles_folder=envfiles_folder)\n        from conans.util.runners import conan_run\n        if not quiet:\n            ConanOutput().writeln(f\"{self.display_name}: RUN: {command}\", fg=Color.BRIGHT_BLUE)\n        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, stderr=stderr, shell=shell)\n        if not quiet:\n            ConanOutput().writeln(\"\")\n\n        if not ignore_errors and retcode != 0:\n            raise ConanException(\"Error %d while executing\" % retcode)\n\n        return retcode\n\n    def __repr__(self):\n        return self.display_name\n\n    def set_deploy_folder(self, deploy_folder):\n        self.cpp_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.buildenv_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.runenv_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.folders.set_base_package(deploy_folder)\n","header":{"file":{"path":"conans/model/conan_file.py"},"misc_line":null},"index_line":null,"is_binary_file":false,"binary_line":null,"minus_file":{"path":"a/conans/model/conan_file.py"},"plus_file":{"path":"b/conans/model/conan_file.py"},"hunks":[{"descriptor":{"old_range":{"start":318,"length":7},"new_range":{"start":318,"length":7},"section":"def generators_path(self) -> Path:"},"line_group":{"all_lines":[{"content":"        return Path(self.generators_folder)","type":"context"},{"content":"","type":"context"},{"content":"    def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet=False,","type":"context"},{"content":"            shell=True, scope=\"build\"):","type":"deleted"},{"content":"            shell=True, scope=\"build\", stderr=None):","type":"added"},{"content":"        # NOTE: \"self.win_bash\" is the new parameter \"win_bash\" for Conan 2.0","type":"context"},{"content":"        command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)","type":"context"},{"content":"        if env == \"\":  # This default allows not breaking for users with ``env=None`` indicating","type":"context"}]},"modified_entities":[],"added_entities":[],"deleted_entities":[]},{"descriptor":{"old_range":{"start":332,"length":7},"new_range":{"start":332,"length":7},"section":"def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet"},"line_group":{"all_lines":[{"content":"        from conans.util.runners import conan_run","type":"context"},{"content":"        if not quiet:","type":"context"},{"content":"            ConanOutput().writeln(f\"{self.display_name}: RUN: {command}\", fg=Color.BRIGHT_BLUE)","type":"context"},{"content":"        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)","type":"deleted"},{"content":"        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, stderr=stderr, shell=shell)","type":"added"},{"content":"        if not quiet:","type":"context"},{"content":"            ConanOutput().writeln(\"\")","type":"context"},{"content":"","type":"context"},{"content":"","type":"context"}]},"modified_entities":[],"added_entities":[],"deleted_entities":[]}]}],"old_commit_hash":"a12a08dc41ae3138044c65b82ee51eb2ed672e9c","new_commit_hash":"0ee911038fe2249326887b809b8f473451d60e92","commit_message":"Add stderr capture to conanfile.run method","commit_date":"2023-11-16T17:11:04+01:00","metadata":{}}
problem_statement: Have `ConanFile.run()` be able to get `stderr` just like it does for `stdout`
  Somestimes recipes call to programs that outùt important info to stderr instead of stdout, and Conan currently provides no good way to fetch that info
  
  
  _Originally posted by @RubenRBS in https://github.com/conan-io/conan-center-index/pull/20979#discussion_r1395712850_
              
  
patch: diff --git a/conans/model/conan_file.py b/conans/model/conan_file.py
  --- a/conans/model/conan_file.py
  +++ b/conans/model/conan_file.py
  @@ -318,7 +318,7 @@ def generators_path(self) -> Path:
           return Path(self.generators_folder)
   
       def run(self, command, stdout=None, cwd=None, ignore_errors=False, env="", quiet=False,
  -            shell=True, scope="build"):
  +            shell=True, scope="build", stderr=None):
           # NOTE: "self.win_bash" is the new parameter "win_bash" for Conan 2.0
           command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)
           if env == "":  # This default allows not breaking for users with ``env=None`` indicating
  @@ -332,7 +332,7 @@ def run(self, command, stdout=None, cwd=None, ignore_errors=False, env="", quiet
           from conans.util.runners import conan_run
           if not quiet:
               ConanOutput().writeln(f"{self.display_name}: RUN: {command}", fg=Color.BRIGHT_BLUE)
  -        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)
  +        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, stderr=stderr, shell=shell)
           if not quiet:
               ConanOutput().writeln("")
   
   
  
file_context: {"conans/model/conan_file.py": "import os\nfrom pathlib import Path\n\nfrom conan.api.output import ConanOutput, Color\nfrom conans.client.subsystems import command_env_wrapper\nfrom conans.errors import ConanException\nfrom conans.model.build_info import MockInfoProperty\nfrom conans.model.conf import Conf\nfrom conans.model.dependencies import ConanFileDependencies\nfrom conans.model.layout import Folders, Infos, Layouts\nfrom conans.model.options import Options\n\nfrom conans.model.requires import Requirements\nfrom conans.model.settings import Settings\n\n\nclass ConanFile:\n    \"\"\"\n    The base class for all package recipes\n    \"\"\"\n\n    # Reference\n    name = None\n    version = None  # Any str, can be \"1.1\" or whatever\n    user = None\n    channel = None\n\n    # Metadata\n    url = None  # The URL where this File is located, as github, to collaborate in package\n    license = None\n    author = None\n    description = None\n    topics = None\n    homepage = None\n\n    build_policy = None\n    upload_policy = None\n\n    exports = None\n    exports_sources = None\n\n    generators = []\n    revision_mode = \"hash\"\n\n    # Binary model: Settings and Options\n    settings = None\n    options = None\n    default_options = None\n    default_build_options = None\n    package_type = None\n\n    implements = []\n\n    provides = None\n    deprecated = None\n\n    win_bash = None\n    win_bash_run = None  # For run scope\n\n    _conan_is_consumer = False\n\n    # #### Requirements\n    requires = None\n    tool_requires = None\n    build_requires = None\n    test_requires = None\n    tested_reference_str = None\n\n    no_copy_source = False\n    recipe_folder = None\n\n    # Package information\n    cpp = None\n    buildenv_info = None\n    runenv_info = None\n    conf_info = None\n\n    def __init__(self, display_name=\"\"):\n        self.display_name = display_name\n        # something that can run commands, as os.sytem\n\n        self._conan_helpers = None\n        from conan.tools.env import Environment\n        self.buildenv_info = Environment()\n        self.runenv_info = Environment()\n        # At the moment only for build_requires, others will be ignored\n        self.conf_info = Conf()\n        self.info = None\n        self._conan_buildenv = None  # The profile buildenv, will be assigned initialize()\n        self._conan_runenv = None\n        self._conan_node = None  # access to container Node object, to access info, context, deps...\n\n        if isinstance(self.generators, str):\n            self.generators = [self.generators]\n        if isinstance(self.settings, str):\n            self.settings = [self.settings]\n        self.requires = Requirements(self.requires, self.build_requires, self.test_requires,\n                                     self.tool_requires)\n\n        self.options = Options(self.options or {}, self.default_options)\n\n        if isinstance(self.topics, str):\n            self.topics = [self.topics]\n        if isinstance(self.provides, str):\n            self.provides = [self.provides]\n\n        # user declared variables\n        self.user_info = MockInfoProperty(\"user_info\")\n        self.env_info = MockInfoProperty(\"env_info\")\n        self._conan_dependencies = None\n\n        if not hasattr(self, \"virtualbuildenv\"):  # Allow the user to override it with True or False\n            self.virtualbuildenv = True\n        if not hasattr(self, \"virtualrunenv\"):  # Allow the user to override it with True or False\n            self.virtualrunenv = True\n\n        self.env_scripts = {}  # Accumulate the env scripts generated in order\n        self.system_requires = {}  # Read only, internal {\"apt\": []}\n\n        # layout() method related variables:\n        self.folders = Folders()\n        self.cpp = Infos()\n        self.layouts = Layouts()\n\n    def serialize(self):\n        result = {}\n\n        for a in (\"name\", \"user\", \"channel\", \"url\", \"license\",\n                  \"author\", \"description\", \"homepage\", \"build_policy\", \"upload_policy\",\n                  \"revision_mode\", \"provides\", \"deprecated\", \"win_bash\", \"win_bash_run\",\n                  \"default_options\", \"options_description\"):\n            v = getattr(self, a, None)\n            result[a] = v\n\n        result[\"version\"] = str(self.version) if self.version is not None else None\n        result[\"topics\"] = list(self.topics) if self.topics is not None else None\n        result[\"package_type\"] = str(self.package_type)\n\n        settings = self.settings\n        if settings is not None:\n            result[\"settings\"] = settings.serialize() if isinstance(settings, Settings) else list(settings)\n\n        result[\"options\"] = self.options.serialize()\n        result[\"options_definitions\"] = self.options.possible_values\n\n        if self.generators is not None:\n            result[\"generators\"] = list(self.generators)\n        if self.license is not None:\n            result[\"license\"] = list(self.license) if not isinstance(self.license, str) else self.license\n\n        result[\"requires\"] = self.requires.serialize()\n\n        if hasattr(self, \"python_requires\"):\n            result[\"python_requires\"] = self.python_requires.serialize()\n        else:\n            result[\"python_requires\"] = None\n        result[\"system_requires\"] = self.system_requires\n\n        result[\"recipe_folder\"] = self.recipe_folder\n        result[\"source_folder\"] = self.source_folder\n        result[\"build_folder\"] = self.build_folder\n        result[\"generators_folder\"] = self.generators_folder\n        result[\"package_folder\"] = self.package_folder\n\n        result[\"cpp_info\"] = self.cpp_info.serialize()\n        result[\"conf_info\"] = self.conf_info.serialize()\n        result[\"label\"] = self.display_name\n        return result\n\n    @property\n    def output(self):\n        # an output stream (writeln, info, warn error)\n        scope = self.display_name\n        if not scope:\n            scope = self.ref if self._conan_node else \"\"\n        return ConanOutput(scope=scope)\n\n    @property\n    def context(self):\n        return self._conan_node.context\n\n    @property\n    def dependencies(self):\n        # Caching it, this object is requested many times\n        if self._conan_dependencies is None:\n            self._conan_dependencies = ConanFileDependencies.from_node(self._conan_node)\n        return self._conan_dependencies\n\n    @property\n    def ref(self):\n        return self._conan_node.ref\n\n    @property\n    def pref(self):\n        return self._conan_node.pref\n\n    @property\n    def buildenv(self):\n        # Lazy computation of the package buildenv based on the profileone\n        from conan.tools.env import Environment\n        if not isinstance(self._conan_buildenv, Environment):\n            self._conan_buildenv = self._conan_buildenv.get_profile_env(self.ref,\n                                                                        self._conan_is_consumer)\n        return self._conan_buildenv\n\n    @property\n    def runenv(self):\n        # Lazy computation of the package runenv based on the profile one\n        from conan.tools.env import Environment\n        if not isinstance(self._conan_runenv, Environment):\n            self._conan_runenv = self._conan_runenv.get_profile_env(self.ref,\n                                                                    self._conan_is_consumer)\n        return self._conan_runenv\n\n    @property\n    def cpp_info(self):\n        \"\"\"\n        Same as using ``self.cpp.package`` in the ``layout()`` method. Use it if you need to read\n        the ``package_folder`` to locate the already located artifacts.\n        \"\"\"\n        return self.cpp.package\n\n    @cpp_info.setter\n    def cpp_info(self, value):\n        self.cpp.package = value\n\n    @property\n    def source_folder(self):\n        \"\"\"\n        The folder in which the source code lives. The path is built joining the base directory\n        (a cache directory when running in the cache or the ``output folder`` when running locally)\n        with the value of ``folders.source`` if declared in the ``layout()`` method.\n\n        :return: A string with the path to the source folder.\n        \"\"\"\n        return self.folders.source_folder\n\n    @property\n    def source_path(self) -> Path:\n        assert self.source_folder is not None, \"`source_folder` is `None`\"\n        return Path(self.source_folder)\n\n    @property\n    def export_sources_folder(self):\n        \"\"\"\n        The value depends on the method you access it:\n\n            - At ``source(self)``: Points to the base source folder (that means self.source_folder but\n              without taking into account the ``folders.source`` declared in the ``layout()`` method).\n              The declared `exports_sources` are copied to that base source folder always.\n            - At ``exports_sources(self)``: Points to the folder in the cache where the export sources\n              have to be copied.\n\n        :return: A string with the mentioned path.\n        \"\"\"\n        return self.folders.base_export_sources\n\n    @property\n    def export_sources_path(self) -> Path:\n        assert self.export_sources_folder is not None, \"`export_sources_folder` is `None`\"\n        return Path(self.export_sources_folder)\n\n    @property\n    def export_folder(self):\n        return self.folders.base_export\n\n    @property\n    def export_path(self) -> Path:\n        assert self.export_folder is not None, \"`export_folder` is `None`\"\n        return Path(self.export_folder)\n\n    @property\n    def build_folder(self):\n        \"\"\"\n        The folder used to build the source code. The path is built joining the base directory (a cache\n        directory when running in the cache or the ``output folder`` when running locally) with\n        the value of ``folders.build`` if declared in the ``layout()`` method.\n\n        :return: A string with the path to the build folder.\n        \"\"\"\n        return self.folders.build_folder\n\n    @property\n    def recipe_metadata_folder(self):\n        return self.folders.recipe_metadata_folder\n\n    @property\n    def package_metadata_folder(self):\n        return self.folders.package_metadata_folder\n\n    @property\n    def build_path(self) -> Path:\n        assert self.build_folder is not None, \"`build_folder` is `None`\"\n        return Path(self.build_folder)\n\n    @property\n    def package_folder(self):\n        \"\"\"\n        The folder to copy the final artifacts for the binary package. In the local cache a package\n        folder is created for every different package ID.\n\n        :return: A string with the path to the package folder.\n        \"\"\"\n        return self.folders.base_package\n\n    @property\n    def generators_folder(self):\n        return self.folders.generators_folder\n\n    @property\n    def package_path(self) -> Path:\n        assert self.package_folder is not None, \"`package_folder` is `None`\"\n        return Path(self.package_folder)\n\n    @property\n    def generators_path(self) -> Path:\n        assert self.generators_folder is not None, \"`generators_folder` is `None`\"\n        return Path(self.generators_folder)\n\n    def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet=False,\n            shell=True, scope=\"build\"):\n        # NOTE: \"self.win_bash\" is the new parameter \"win_bash\" for Conan 2.0\n        command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)\n        if env == \"\":  # This default allows not breaking for users with ``env=None`` indicating\n            # they don't want any env-file applied\n            env = \"conanbuild\" if scope == \"build\" else \"conanrun\"\n\n        env = [env] if env and isinstance(env, str) else (env or [])\n        assert isinstance(env, list), \"env argument to ConanFile.run() should be a list\"\n        envfiles_folder = self.generators_folder or os.getcwd()\n        wrapped_cmd = command_env_wrapper(self, command, env, envfiles_folder=envfiles_folder)\n        from conans.util.runners import conan_run\n        if not quiet:\n            ConanOutput().writeln(f\"{self.display_name}: RUN: {command}\", fg=Color.BRIGHT_BLUE)\n        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)\n        if not quiet:\n            ConanOutput().writeln(\"\")\n\n        if not ignore_errors and retcode != 0:\n            raise ConanException(\"Error %d while executing\" % retcode)\n\n        return retcode\n\n    def __repr__(self):\n        return self.display_name\n\n    def set_deploy_folder(self, deploy_folder):\n        self.cpp_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.buildenv_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.runenv_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.folders.set_base_package(deploy_folder)\n"}
filelevel_patches: {"conans/model/conan_file.py": "@@ -318,7 +318,7 @@ def generators_path(self) -> Path:\n         return Path(self.generators_folder)\n \n     def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet=False,\n-            shell=True, scope=\"build\"):\n+            shell=True, scope=\"build\", stderr=None):\n         # NOTE: \"self.win_bash\" is the new parameter \"win_bash\" for Conan 2.0\n         command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)\n         if env == \"\":  # This default allows not breaking for users with ``env=None`` indicating\n@@ -332,7 +332,7 @@ def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet\n         from conans.util.runners import conan_run\n         if not quiet:\n             ConanOutput().writeln(f\"{self.display_name}: RUN: {command}\", fg=Color.BRIGHT_BLUE)\n-        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)\n+        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, stderr=stderr, shell=shell)\n         if not quiet:\n             ConanOutput().writeln(\"\")"}
messages.content: 
  We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  Have `ConanFile.run()` be able to get `stderr` just like it does for `stdout`
  Somestimes recipes call to programs that outùt important info to stderr instead of stdout, and Conan currently provides no good way to fetch that info
  
  
  _Originally posted by @RubenRBS in https://github.com/conan-io/conan-center-index/pull/20979#discussion_r1395712850_
              
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  
  --- BEGIN FILE ---
  ```
  ### conans/model/conan_file.py
  import os
  from pathlib import Path
  
  from conan.api.output import ConanOutput, Color
  from conans.client.subsystems import command_env_wrapper
  from conans.errors import ConanException
  from conans.model.build_info import MockInfoProperty
  from conans.model.conf import Conf
  from conans.model.dependencies import ConanFileDependencies
  from conans.model.layout import Folders, Infos, Layouts
  from conans.model.options import Options
  
  from conans.model.requires import Requirements
  from conans.model.settings import Settings
  
  
  class ConanFile:
      """
      The base class for all package recipes
      """
  
      # Reference
      name = None
      version = None  # Any str, can be "1.1" or whatever
      user = None
      channel = None
  
      # Metadata
      url = None  # The URL where this File is located, as github, to collaborate in package
      license = None
      author = None
      description = None
      topics = None
      homepage = None
  
      build_policy = None
      upload_policy = None
  
      exports = None
      exports_sources = None
  
      generators = []
      revision_mode = "hash"
  
      # Binary model: Settings and Options
      settings = None
      options = None
      default_options = None
      default_build_options = None
      package_type = None
  
      implements = []
  
      provides = None
      deprecated = None
  
      win_bash = None
      win_bash_run = None  # For run scope
  
      _conan_is_consumer = False
  
      # #### Requirements
      requires = None
      tool_requires = None
      build_requires = None
      test_requires = None
      tested_reference_str = None
  
      no_copy_source = False
      recipe_folder = None
  
      # Package information
      cpp = None
      buildenv_info = None
      runenv_info = None
      conf_info = None
  
      def __init__(self, display_name=""):
          self.display_name = display_name
          # something that can run commands, as os.sytem
  
          self._conan_helpers = None
          from conan.tools.env import Environment
          self.buildenv_info = Environment()
          self.runenv_info = Environment()
          # At the moment only for build_requires, others will be ignored
          self.conf_info = Conf()
          self.info = None
          self._conan_buildenv = None  # The profile buildenv, will be assigned initialize()
          self._conan_runenv = None
          self._conan_node = None  # access to container Node object, to access info, context, deps...
  
          if isinstance(self.generators, str):
              self.generators = [self.generators]
          if isinstance(self.settings, str):
              self.settings = [self.settings]
          self.requires = Requirements(self.requires, self.build_requires, self.test_requires,
                                       self.tool_requires)
  
          self.options = Options(self.options or {}, self.default_options)
  
          if isinstance(self.topics, str):
              self.topics = [self.topics]
          if isinstance(self.provides, str):
              self.provides = [self.provides]
  
          # user declared variables
          self.user_info = MockInfoProperty("user_info")
          self.env_info = MockInfoProperty("env_info")
          self._conan_dependencies = None
  
          if not hasattr(self, "virtualbuildenv"):  # Allow the user to override it with True or False
              self.virtualbuildenv = True
          if not hasattr(self, "virtualrunenv"):  # Allow the user to override it with True or False
              self.virtualrunenv = True
  
          self.env_scripts = {}  # Accumulate the env scripts generated in order
          self.system_requires = {}  # Read only, internal {"apt": []}
  
          # layout() method related variables:
          self.folders = Folders()
          self.cpp = Infos()
          self.layouts = Layouts()
  
      def serialize(self):
          result = {}
  
          for a in ("name", "user", "channel", "url", "license",
                    "author", "description", "homepage", "build_policy", "upload_policy",
                    "revision_mode", "provides", "deprecated", "win_bash", "win_bash_run",
                    "default_options", "options_description"):
              v = getattr(self, a, None)
              result[a] = v
  
          result["version"] = str(self.version) if self.version is not None else None
          result["topics"] = list(self.topics) if self.topics is not None else None
          result["package_type"] = str(self.package_type)
  
          settings = self.settings
          if settings is not None:
              result["settings"] = settings.serialize() if isinstance(settings, Settings) else list(settings)
  
          result["options"] = self.options.serialize()
          result["options_definitions"] = self.options.possible_values
  
          if self.generators is not None:
              result["generators"] = list(self.generators)
          if self.license is not None:
              result["license"] = list(self.license) if not isinstance(self.license, str) else self.license
  
          result["requires"] = self.requires.serialize()
  
          if hasattr(self, "python_requires"):
              result["python_requires"] = self.python_requires.serialize()
          else:
              result["python_requires"] = None
          result["system_requires"] = self.system_requires
  
          result["recipe_folder"] = self.recipe_folder
          result["source_folder"] = self.source_folder
          result["build_folder"] = self.build_folder
          result["generators_folder"] = self.generators_folder
          result["package_folder"] = self.package_folder
  
          result["cpp_info"] = self.cpp_info.serialize()
          result["conf_info"] = self.conf_info.serialize()
          result["label"] = self.display_name
          return result
  
      @property
      def output(self):
          # an output stream (writeln, info, warn error)
          scope = self.display_name
          if not scope:
              scope = self.ref if self._conan_node else ""
          return ConanOutput(scope=scope)
  
      @property
      def context(self):
          return self._conan_node.context
  
      @property
      def dependencies(self):
          # Caching it, this object is requested many times
          if self._conan_dependencies is None:
              self._conan_dependencies = ConanFileDependencies.from_node(self._conan_node)
          return self._conan_dependencies
  
      @property
      def ref(self):
          return self._conan_node.ref
  
      @property
      def pref(self):
          return self._conan_node.pref
  
      @property
      def buildenv(self):
          # Lazy computation of the package buildenv based on the profileone
          from conan.tools.env import Environment
          if not isinstance(self._conan_buildenv, Environment):
              self._conan_buildenv = self._conan_buildenv.get_profile_env(self.ref,
                                                                          self._conan_is_consumer)
          return self._conan_buildenv
  
      @property
      def runenv(self):
          # Lazy computation of the package runenv based on the profile one
          from conan.tools.env import Environment
          if not isinstance(self._conan_runenv, Environment):
              self._conan_runenv = self._conan_runenv.get_profile_env(self.ref,
                                                                      self._conan_is_consumer)
          return self._conan_runenv
  
      @property
      def cpp_info(self):
          """
          Same as using ``self.cpp.package`` in the ``layout()`` method. Use it if you need to read
          the ``package_folder`` to locate the already located artifacts.
          """
          return self.cpp.package
  
      @cpp_info.setter
      def cpp_info(self, value):
          self.cpp.package = value
  
      @property
      def source_folder(self):
          """
          The folder in which the source code lives. The path is built joining the base directory
          (a cache directory when running in the cache or the ``output folder`` when running locally)
          with the value of ``folders.source`` if declared in the ``layout()`` method.
  
          :return: A string with the path to the source folder.
          """
          return self.folders.source_folder
  
      @property
      def source_path(self) -> Path:
          assert self.source_folder is not None, "`source_folder` is `None`"
          return Path(self.source_folder)
  
      @property
      def export_sources_folder(self):
          """
          The value depends on the method you access it:
  
              - At ``source(self)``: Points to the base source folder (that means self.source_folder but
                without taking into account the ``folders.source`` declared in the ``layout()`` method).
                The declared `exports_sources` are copied to that base source folder always.
              - At ``exports_sources(self)``: Points to the folder in the cache where the export sources
                have to be copied.
  
          :return: A string with the mentioned path.
          """
          return self.folders.base_export_sources
  
      @property
      def export_sources_path(self) -> Path:
          assert self.export_sources_folder is not None, "`export_sources_folder` is `None`"
          return Path(self.export_sources_folder)
  
      @property
      def export_folder(self):
          return self.folders.base_export
  
      @property
      def export_path(self) -> Path:
          assert self.export_folder is not None, "`export_folder` is `None`"
          return Path(self.export_folder)
  
      @property
      def build_folder(self):
          """
          The folder used to build the source code. The path is built joining the base directory (a cache
          directory when running in the cache or the ``output folder`` when running locally) with
          the value of ``folders.build`` if declared in the ``layout()`` method.
  
          :return: A string with the path to the build folder.
          """
          return self.folders.build_folder
  
      @property
      def recipe_metadata_folder(self):
          return self.folders.recipe_metadata_folder
  
      @property
      def package_metadata_folder(self):
          return self.folders.package_metadata_folder
  
      @property
      def build_path(self) -> Path:
          assert self.build_folder is not None, "`build_folder` is `None`"
          return Path(self.build_folder)
  
      @property
      def package_folder(self):
          """
          The folder to copy the final artifacts for the binary package. In the local cache a package
          folder is created for every different package ID.
  
          :return: A string with the path to the package folder.
          """
          return self.folders.base_package
  
      @property
      def generators_folder(self):
          return self.folders.generators_folder
  
      @property
      def package_path(self) -> Path:
          assert self.package_folder is not None, "`package_folder` is `None`"
          return Path(self.package_folder)
  
      @property
      def generators_path(self) -> Path:
          assert self.generators_folder is not None, "`generators_folder` is `None`"
          return Path(self.generators_folder)
  
      def run(self, command, stdout=None, cwd=None, ignore_errors=False, env="", quiet=False,
              shell=True, scope="build"):
          # NOTE: "self.win_bash" is the new parameter "win_bash" for Conan 2.0
          command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)
          if env == "":  # This default allows not breaking for users with ``env=None`` indicating
              # they don't want any env-file applied
              env = "conanbuild" if scope == "build" else "conanrun"
  
          env = [env] if env and isinstance(env, str) else (env or [])
          assert isinstance(env, list), "env argument to ConanFile.run() should be a list"
          envfiles_folder = self.generators_folder or os.getcwd()
          wrapped_cmd = command_env_wrapper(self, command, env, envfiles_folder=envfiles_folder)
          from conans.util.runners import conan_run
          if not quiet:
              ConanOutput().writeln(f"{self.display_name}: RUN: {command}", fg=Color.BRIGHT_BLUE)
          retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)
          if not quiet:
              ConanOutput().writeln("")
  
          if not ignore_errors and retcode != 0:
              raise ConanException("Error %d while executing" % retcode)
  
          return retcode
  
      def __repr__(self):
          return self.display_name
  
      def set_deploy_folder(self, deploy_folder):
          self.cpp_info.deploy_base_folder(self.package_folder, deploy_folder)
          self.buildenv_info.deploy_base_folder(self.package_folder, deploy_folder)
          self.runenv_info.deploy_base_folder(self.package_folder, deploy_folder)
          self.folders.set_base_package(deploy_folder)
  
  ```
  --- END FILE ---
  
  Please first localize the bug based on the issue statement, and then generate *SEARCH/REPLACE* edits to fix the issue.
  
  Every *SEARCH/REPLACE* edit must use this format:
  1. The file path
  2. The start of search block: <<<<<<< SEARCH
  3. A contiguous chunk of lines to search for in the existing source code
  4. The dividing line: =======
  5. The lines to replace into the source code
  6. The end of the replace block: >>>>>>> REPLACE
  
  Here is an example:
  
  ```python
  ### mathweb/flask/app.py
  <<<<<<< SEARCH
  from flask import Flask
  =======
  import math
  from flask import Flask
  >>>>>>> REPLACE
  ```
  
  Please note that the *SEARCH/REPLACE* edit REQUIRES PROPER INDENTATION. If you would like to add the line '        print(x)', you must fully write that out, with all those spaces before the code!
  Wrap the *SEARCH/REPLACE* edit in blocks ```python...```.
  
messages.role: user
verification_info: {"file_context": {"conans/model/conan_file.py": "import os\nfrom pathlib import Path\n\nfrom conan.api.output import ConanOutput, Color\nfrom conans.client.subsystems import command_env_wrapper\nfrom conans.errors import ConanException\nfrom conans.model.build_info import MockInfoProperty\nfrom conans.model.conf import Conf\nfrom conans.model.dependencies import ConanFileDependencies\nfrom conans.model.layout import Folders, Infos, Layouts\nfrom conans.model.options import Options\n\nfrom conans.model.requires import Requirements\nfrom conans.model.settings import Settings\n\n\nclass ConanFile:\n    \"\"\"\n    The base class for all package recipes\n    \"\"\"\n\n    # Reference\n    name = None\n    version = None  # Any str, can be \"1.1\" or whatever\n    user = None\n    channel = None\n\n    # Metadata\n    url = None  # The URL where this File is located, as github, to collaborate in package\n    license = None\n    author = None\n    description = None\n    topics = None\n    homepage = None\n\n    build_policy = None\n    upload_policy = None\n\n    exports = None\n    exports_sources = None\n\n    generators = []\n    revision_mode = \"hash\"\n\n    # Binary model: Settings and Options\n    settings = None\n    options = None\n    default_options = None\n    default_build_options = None\n    package_type = None\n\n    implements = []\n\n    provides = None\n    deprecated = None\n\n    win_bash = None\n    win_bash_run = None  # For run scope\n\n    _conan_is_consumer = False\n\n    # #### Requirements\n    requires = None\n    tool_requires = None\n    build_requires = None\n    test_requires = None\n    tested_reference_str = None\n\n    no_copy_source = False\n    recipe_folder = None\n\n    # Package information\n    cpp = None\n    buildenv_info = None\n    runenv_info = None\n    conf_info = None\n\n    def __init__(self, display_name=\"\"):\n        self.display_name = display_name\n        # something that can run commands, as os.sytem\n\n        self._conan_helpers = None\n        from conan.tools.env import Environment\n        self.buildenv_info = Environment()\n        self.runenv_info = Environment()\n        # At the moment only for build_requires, others will be ignored\n        self.conf_info = Conf()\n        self.info = None\n        self._conan_buildenv = None  # The profile buildenv, will be assigned initialize()\n        self._conan_runenv = None\n        self._conan_node = None  # access to container Node object, to access info, context, deps...\n\n        if isinstance(self.generators, str):\n            self.generators = [self.generators]\n        if isinstance(self.settings, str):\n            self.settings = [self.settings]\n        self.requires = Requirements(self.requires, self.build_requires, self.test_requires,\n                                     self.tool_requires)\n\n        self.options = Options(self.options or {}, self.default_options)\n\n        if isinstance(self.topics, str):\n            self.topics = [self.topics]\n        if isinstance(self.provides, str):\n            self.provides = [self.provides]\n\n        # user declared variables\n        self.user_info = MockInfoProperty(\"user_info\")\n        self.env_info = MockInfoProperty(\"env_info\")\n        self._conan_dependencies = None\n\n        if not hasattr(self, \"virtualbuildenv\"):  # Allow the user to override it with True or False\n            self.virtualbuildenv = True\n        if not hasattr(self, \"virtualrunenv\"):  # Allow the user to override it with True or False\n            self.virtualrunenv = True\n\n        self.env_scripts = {}  # Accumulate the env scripts generated in order\n        self.system_requires = {}  # Read only, internal {\"apt\": []}\n\n        # layout() method related variables:\n        self.folders = Folders()\n        self.cpp = Infos()\n        self.layouts = Layouts()\n\n    def serialize(self):\n        result = {}\n\n        for a in (\"name\", \"user\", \"channel\", \"url\", \"license\",\n                  \"author\", \"description\", \"homepage\", \"build_policy\", \"upload_policy\",\n                  \"revision_mode\", \"provides\", \"deprecated\", \"win_bash\", \"win_bash_run\",\n                  \"default_options\", \"options_description\"):\n            v = getattr(self, a, None)\n            result[a] = v\n\n        result[\"version\"] = str(self.version) if self.version is not None else None\n        result[\"topics\"] = list(self.topics) if self.topics is not None else None\n        result[\"package_type\"] = str(self.package_type)\n\n        settings = self.settings\n        if settings is not None:\n            result[\"settings\"] = settings.serialize() if isinstance(settings, Settings) else list(settings)\n\n        result[\"options\"] = self.options.serialize()\n        result[\"options_definitions\"] = self.options.possible_values\n\n        if self.generators is not None:\n            result[\"generators\"] = list(self.generators)\n        if self.license is not None:\n            result[\"license\"] = list(self.license) if not isinstance(self.license, str) else self.license\n\n        result[\"requires\"] = self.requires.serialize()\n\n        if hasattr(self, \"python_requires\"):\n            result[\"python_requires\"] = self.python_requires.serialize()\n        else:\n            result[\"python_requires\"] = None\n        result[\"system_requires\"] = self.system_requires\n\n        result[\"recipe_folder\"] = self.recipe_folder\n        result[\"source_folder\"] = self.source_folder\n        result[\"build_folder\"] = self.build_folder\n        result[\"generators_folder\"] = self.generators_folder\n        result[\"package_folder\"] = self.package_folder\n\n        result[\"cpp_info\"] = self.cpp_info.serialize()\n        result[\"conf_info\"] = self.conf_info.serialize()\n        result[\"label\"] = self.display_name\n        return result\n\n    @property\n    def output(self):\n        # an output stream (writeln, info, warn error)\n        scope = self.display_name\n        if not scope:\n            scope = self.ref if self._conan_node else \"\"\n        return ConanOutput(scope=scope)\n\n    @property\n    def context(self):\n        return self._conan_node.context\n\n    @property\n    def dependencies(self):\n        # Caching it, this object is requested many times\n        if self._conan_dependencies is None:\n            self._conan_dependencies = ConanFileDependencies.from_node(self._conan_node)\n        return self._conan_dependencies\n\n    @property\n    def ref(self):\n        return self._conan_node.ref\n\n    @property\n    def pref(self):\n        return self._conan_node.pref\n\n    @property\n    def buildenv(self):\n        # Lazy computation of the package buildenv based on the profileone\n        from conan.tools.env import Environment\n        if not isinstance(self._conan_buildenv, Environment):\n            self._conan_buildenv = self._conan_buildenv.get_profile_env(self.ref,\n                                                                        self._conan_is_consumer)\n        return self._conan_buildenv\n\n    @property\n    def runenv(self):\n        # Lazy computation of the package runenv based on the profile one\n        from conan.tools.env import Environment\n        if not isinstance(self._conan_runenv, Environment):\n            self._conan_runenv = self._conan_runenv.get_profile_env(self.ref,\n                                                                    self._conan_is_consumer)\n        return self._conan_runenv\n\n    @property\n    def cpp_info(self):\n        \"\"\"\n        Same as using ``self.cpp.package`` in the ``layout()`` method. Use it if you need to read\n        the ``package_folder`` to locate the already located artifacts.\n        \"\"\"\n        return self.cpp.package\n\n    @cpp_info.setter\n    def cpp_info(self, value):\n        self.cpp.package = value\n\n    @property\n    def source_folder(self):\n        \"\"\"\n        The folder in which the source code lives. The path is built joining the base directory\n        (a cache directory when running in the cache or the ``output folder`` when running locally)\n        with the value of ``folders.source`` if declared in the ``layout()`` method.\n\n        :return: A string with the path to the source folder.\n        \"\"\"\n        return self.folders.source_folder\n\n    @property\n    def source_path(self) -> Path:\n        assert self.source_folder is not None, \"`source_folder` is `None`\"\n        return Path(self.source_folder)\n\n    @property\n    def export_sources_folder(self):\n        \"\"\"\n        The value depends on the method you access it:\n\n            - At ``source(self)``: Points to the base source folder (that means self.source_folder but\n              without taking into account the ``folders.source`` declared in the ``layout()`` method).\n              The declared `exports_sources` are copied to that base source folder always.\n            - At ``exports_sources(self)``: Points to the folder in the cache where the export sources\n              have to be copied.\n\n        :return: A string with the mentioned path.\n        \"\"\"\n        return self.folders.base_export_sources\n\n    @property\n    def export_sources_path(self) -> Path:\n        assert self.export_sources_folder is not None, \"`export_sources_folder` is `None`\"\n        return Path(self.export_sources_folder)\n\n    @property\n    def export_folder(self):\n        return self.folders.base_export\n\n    @property\n    def export_path(self) -> Path:\n        assert self.export_folder is not None, \"`export_folder` is `None`\"\n        return Path(self.export_folder)\n\n    @property\n    def build_folder(self):\n        \"\"\"\n        The folder used to build the source code. The path is built joining the base directory (a cache\n        directory when running in the cache or the ``output folder`` when running locally) with\n        the value of ``folders.build`` if declared in the ``layout()`` method.\n\n        :return: A string with the path to the build folder.\n        \"\"\"\n        return self.folders.build_folder\n\n    @property\n    def recipe_metadata_folder(self):\n        return self.folders.recipe_metadata_folder\n\n    @property\n    def package_metadata_folder(self):\n        return self.folders.package_metadata_folder\n\n    @property\n    def build_path(self) -> Path:\n        assert self.build_folder is not None, \"`build_folder` is `None`\"\n        return Path(self.build_folder)\n\n    @property\n    def package_folder(self):\n        \"\"\"\n        The folder to copy the final artifacts for the binary package. In the local cache a package\n        folder is created for every different package ID.\n\n        :return: A string with the path to the package folder.\n        \"\"\"\n        return self.folders.base_package\n\n    @property\n    def generators_folder(self):\n        return self.folders.generators_folder\n\n    @property\n    def package_path(self) -> Path:\n        assert self.package_folder is not None, \"`package_folder` is `None`\"\n        return Path(self.package_folder)\n\n    @property\n    def generators_path(self) -> Path:\n        assert self.generators_folder is not None, \"`generators_folder` is `None`\"\n        return Path(self.generators_folder)\n\n    def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet=False,\n            shell=True, scope=\"build\"):\n        # NOTE: \"self.win_bash\" is the new parameter \"win_bash\" for Conan 2.0\n        command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)\n        if env == \"\":  # This default allows not breaking for users with ``env=None`` indicating\n            # they don't want any env-file applied\n            env = \"conanbuild\" if scope == \"build\" else \"conanrun\"\n\n        env = [env] if env and isinstance(env, str) else (env or [])\n        assert isinstance(env, list), \"env argument to ConanFile.run() should be a list\"\n        envfiles_folder = self.generators_folder or os.getcwd()\n        wrapped_cmd = command_env_wrapper(self, command, env, envfiles_folder=envfiles_folder)\n        from conans.util.runners import conan_run\n        if not quiet:\n            ConanOutput().writeln(f\"{self.display_name}: RUN: {command}\", fg=Color.BRIGHT_BLUE)\n        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)\n        if not quiet:\n            ConanOutput().writeln(\"\")\n\n        if not ignore_errors and retcode != 0:\n            raise ConanException(\"Error %d while executing\" % retcode)\n\n        return retcode\n\n    def __repr__(self):\n        return self.display_name\n\n    def set_deploy_folder(self, deploy_folder):\n        self.cpp_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.buildenv_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.runenv_info.deploy_base_folder(self.package_folder, deploy_folder)\n        self.folders.set_base_package(deploy_folder)\n"}, "filelevel_patches": {"conans/model/conan_file.py": "@@ -318,7 +318,7 @@ def generators_path(self) -> Path:\n         return Path(self.generators_folder)\n \n     def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet=False,\n-            shell=True, scope=\"build\"):\n+            shell=True, scope=\"build\", stderr=None):\n         # NOTE: \"self.win_bash\" is the new parameter \"win_bash\" for Conan 2.0\n         command = self._conan_helpers.cmd_wrapper.wrap(command, conanfile=self)\n         if env == \"\":  # This default allows not breaking for users with ``env=None`` indicating\n@@ -332,7 +332,7 @@ def run(self, command, stdout=None, cwd=None, ignore_errors=False, env=\"\", quiet\n         from conans.util.runners import conan_run\n         if not quiet:\n             ConanOutput().writeln(f\"{self.display_name}: RUN: {command}\", fg=Color.BRIGHT_BLUE)\n-        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, shell=shell)\n+        retcode = conan_run(wrapped_cmd, cwd=cwd, stdout=stdout, stderr=stderr, shell=shell)\n         if not quiet:\n             ConanOutput().writeln(\"\")"}}