Config clean command sketch

conan/api/subapi/config.py

@@ -188,3 +188,8 @@ def appending_recursive_dict_update(d, u):
             appending_recursive_dict_update(settings, settings_user)
 
         return Settings(settings)
+
+    def clean(self):
+        from conans.client.migrations import ClientMigrator
+        migrator = ClientMigrator(self.conan_api.cache_folder, conan_version)
+        migrator.clean()

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()

conans/client/migrations.py

@@ -7,7 +7,7 @@
 from conan.internal.default_settings import migrate_settings_file
 from conans.migrations import Migrator
 from conans.util.dates import timestamp_now
-from conans.util.files import load, save
+from conans.util.files import load, save, rmdir
 
 CONAN_GENERATED_COMMENT = "This file was generated by Conan"
 
@@ -61,6 +61,16 @@ def _apply_migrations(self, old_version):
         if old_version is None or old_version < "2.4":
             _migrate_default_compatibility(self.cache_folder)
 
+    def clean(self):
+        # TODO: Check what we're deleting
+        contents = os.listdir(self.cache_folder)
+        for contents in contents:
+            # keep packages
+            if contents not in ("p", "version.txt"):
+                rmdir(os.path.join(self.cache_folder, contents))
+        # CHECK: This also generates a remotes.json that is not there after a conan profile show?
+        self._apply_migrations(None)
+
 
 def _migrate_default_compatibility(cache_folder):
     # just the back migration