Config clean command sketch

conan/api/conan_api.py

@@ -6,7 +6,6 @@
 from conan.api.subapi.local import LocalAPI
 from conan.api.subapi.lockfile import LockfileAPI
 from conan.api.subapi.workspace import WorkspaceAPI
-from conan import conan_version
 from conan.api.subapi.config import ConfigAPI
 from conan.api.subapi.download import DownloadAPI
 from conan.api.subapi.export import ExportAPI
@@ -19,7 +18,6 @@
 from conan.api.subapi.remove import RemoveAPI
 from conan.api.subapi.search import SearchAPI
 from conan.api.subapi.upload import UploadAPI
-from conans.client.migrations import ClientMigrator
 from conan.errors import ConanException
 from conan.internal.paths import get_conan_user_home
 from conans.model.version_range import validate_conan_version
@@ -37,10 +35,11 @@ def __init__(self, cache_folder=None):
         self.cache_folder = self.workspace.home_folder() or cache_folder or get_conan_user_home()
         self.home_folder = self.cache_folder  # Lets call it home, deprecate "cache"
 
-        # Migration system
-        migrator = ClientMigrator(self.cache_folder, conan_version)
-        migrator.migrate()
+        self.reinit()
 
+    def reinit(self):
+        self.config = ConfigAPI(self)
+        self.config.migrate()
         self.command = CommandAPI(self)
         self.remotes = RemotesAPI(self)
         # Search recipes by wildcard and packages filtering by configuracion
@@ -52,7 +51,6 @@ def __init__(self, cache_folder=None):
         self.graph = GraphAPI(self)
         self.export = ExportAPI(self)
         self.remove = RemoveAPI(self)
-        self.config = ConfigAPI(self)
         self.new = NewAPI(self)
         self.upload = UploadAPI(self)
         self.download = DownloadAPI(self)

conan/api/subapi/config.py

@@ -20,7 +20,7 @@
 from conans.model.pkg_type import PackageType
 from conans.model.recipe_ref import RecipeReference
 from conans.model.settings import Settings
-from conans.util.files import load, save
+from conans.util.files import load, save, rmdir, remove
 
 
 class ConfigAPI:
@@ -188,3 +188,25 @@ def appending_recursive_dict_update(d, u):
             appending_recursive_dict_update(settings, settings_user)
 
         return Settings(settings)
+
+    def migrate(self):
+        # Migration system
+        # TODO: Still needs refactoring - using it here for now for tests
+        from conans.client.migrations import ClientMigrator
+        migrator = ClientMigrator(self.home(), conan_version)
+        migrator.migrate()
+
+    def clean(self):
+        # TODO: Check what we're deleting
+        contents = os.listdir(self.home())
+        for content in contents:
+            # keep packages
+            if content not in ("p", "version.txt"):
+                content_path = os.path.join(self.home(), content)
+                ConanOutput().debug(f"Removing {content_path}")
+                if os.path.isdir(content_path):
+                    rmdir(content_path)
+                else:
+                    remove(content_path)
+        # CHECK: This also generates a remotes.json that is not there after a conan profile show?
+        self.migrate()

conan/cli/commands/config.py

@@ -1,3 +1,4 @@
+from conan.api.input import UserInput
 from conan.api.model import Remote
 from conan.api.output import cli_out_write
 from conan.cli.command import conan_command, conan_subcommand, OnceArgument
@@ -132,3 +133,16 @@ def config_show(conan_api, parser, subparser, *args):
     args = parser.parse_args(*args)
 
     return conan_api.config.show(args.pattern)
+
+
+@conan_subcommand()
+def config_clean(conan_api, parser, subparser, *args):
+    """
+    Clean the configuration files in the Conan home folder. (Keeping installed packages)
+    """
+    subparser.add_argument("-c", "--confirm", action='store_true',
+                           help="Do not request confirmation")
+    args = parser.parse_args(*args)
+    ui = UserInput(conan_api.config.get("core:non_interactive"))
+    if args.confirm or ui.request_boolean("Clear all configuration files?"):
+        conan_api.config.clean()

test/integration/command/config_test.py

@@ -201,3 +201,22 @@ def test_config_show():
     tc.run("config show zlib/*:foo")
     assert "zlib/*:user.mycategory:foo" in tc.out
     assert "zlib/*:user.myothercategory:foo" in tc.out
+
+
+def test_config_clean():
+    tc = TestClient(light=True)
+    tc.run("profile detect --name=foo")
+    tc.run("remote add bar http://fakeurl")
+    tc.save_home({"global.conf": "core.upload:retry=7\n",
+                  "extensions/compatibility/mycomp.py": "",
+                  "extensions/commands/cmd_foo.py": "",
+                  })
+    tc.run("config clean -c")
+    tc.run("profile list")
+    assert "foo" not in tc.out
+    tc.run("remote list")
+    assert "bar" not in tc.out
+    tc.run("config show core.upload:retry")
+    assert "7" not in tc.out
+    assert not os.path.exists(os.path.join(tc.cache_folder, "extensions"))
+