Extensions: support adding system repositories via the command line

scripts/addons_core/bl_pkg/bl_extension_cli.py

@@ -422,12 +422,19 @@ class subcmd_repo:
             repo_id: str,
             directory: str,
             url: str,
+            source: str,
             cache: bool,
             clear_all: bool,
             no_prefs: bool,
     ) -> bool:
         from bpy import context
 
+        # This could be allowed the Python API doesn't prevent it.
+        # However this is not going to do what the user would expect so disallow it.
+        if url and (source == 'SYSTEM'):
+            sys.stderr.write("Cannot use \"--url\" and \"--source=SYSTEM\" together.\n")
+            return False
+
         extension_repos = context.preferences.extensions.repos
         if clear_all:
             while extension_repos:
@@ -438,6 +445,7 @@ class subcmd_repo:
             module=repo_id,
             custom_directory=directory,
             remote_url=url,
+            source=source,
         )
         repo.use_cache = cache
 
@@ -758,6 +766,18 @@ def cli_extension_args_repo_add(subparsers: "argparse._SubParsersAction[argparse
         ),
     )
 
+    subparse.add_argument(
+        "--source",
+        dest="source",
+        choices=('USER', 'SYSTEM'),
+        default='USER',
+        metavar="SOURCE",
+        help=(
+            "The type of source in ('USER', 'SYSTEM').\n"
+            "System repositories are managed outside of Blender and are considered read-only."
+        ),
+    )
+
     subparse.add_argument(
         "--cache",
         dest="cache",
@@ -786,6 +806,7 @@ def cli_extension_args_repo_add(subparsers: "argparse._SubParsersAction[argparse
             name=args.name,
             directory=args.directory,
             url=args.url,
+            source=args.source,
             cache=args.cache,
             clear_all=args.clear_all,
             no_prefs=args.no_prefs,

source/blender/makesrna/intern/rna_userdef.cc

@@ -174,6 +174,20 @@ static const EnumPropertyItem rna_enum_preference_gpu_backend_items[] = {
     {0, nullptr, 0, nullptr, nullptr},
 };
 
+static const EnumPropertyItem rna_enum_preferences_extension_repo_source_type_items[] = {
+    {USER_EXTENSION_REPO_SOURCE_USER,
+     "USER",
+     0,
+     "User",
+     "Repository managed by the user, stored in user directories"},
+    {USER_EXTENSION_REPO_SOURCE_SYSTEM,
+     "SYSTEM",
+     0,
+     "System",
+     "Read-only repository provided by the system"},
+    {0, nullptr, 0, nullptr, nullptr},
+};
+
 #ifdef RNA_RUNTIME
 
 #  include "BLI_math_vector.h"
@@ -604,7 +618,8 @@ static void rna_userdef_asset_library_remove(ReportList *reports, PointerRNA *pt
 static bUserExtensionRepo *rna_userdef_extension_repo_new(const char *name,
                                                           const char *module,
                                                           const char *custom_directory,
-                                                          const char *remote_url)
+                                                          const char *remote_url,
+                                                          const int source)
 {
   Main *bmain = G.main;
   BKE_callback_exec_null(bmain, BKE_CB_EVT_EXTENSION_REPOS_UPDATE_PRE);
@@ -623,6 +638,8 @@ static bUserExtensionRepo *rna_userdef_extension_repo_new(const char *name,
     repo->flag |= USER_EXTENSION_REPO_FLAG_USE_CUSTOM_DIRECTORY;
   }
 
+  repo->source = source;
+
   BKE_callback_exec_null(bmain, BKE_CB_EVT_EXTENSION_REPOS_UPDATE_POST);
   USERDEF_TAG_DIRTY;
   return repo;
@@ -6794,20 +6811,6 @@ static void rna_def_userdef_filepaths_extension_repo(BlenderRNA *brna)
   StructRNA *srna;
   PropertyRNA *prop;
 
-  static const EnumPropertyItem source_type_items[] = {
-      {USER_EXTENSION_REPO_SOURCE_USER,
-       "USER",
-       0,
-       "User",
-       "Repository managed by the user, stored in user directories"},
-      {USER_EXTENSION_REPO_SOURCE_SYSTEM,
-       "SYSTEM",
-       0,
-       "System",
-       "Read-only repository provided by the system"},
-      {0, nullptr, 0, nullptr, nullptr},
-  };
-
   srna = RNA_def_struct(brna, "UserExtensionRepo", nullptr);
   RNA_def_struct_sdna(srna, "bUserExtensionRepo");
   RNA_def_struct_ui_text(
@@ -6861,7 +6864,7 @@ static void rna_def_userdef_filepaths_extension_repo(BlenderRNA *brna)
   RNA_def_property_update(prop, 0, "rna_userdef_extension_sync_update");
 
   prop = RNA_def_property(srna, "source", PROP_ENUM, PROP_NONE);
-  RNA_def_property_enum_items(prop, source_type_items);
+  RNA_def_property_enum_items(prop, rna_enum_preferences_extension_repo_source_type_items);
   RNA_def_property_enum_funcs(prop, nullptr, "rna_userdef_extension_repo_source_set", nullptr);
   RNA_def_property_ui_text(
       prop,
@@ -7028,6 +7031,12 @@ static void rna_def_userdef_extension_repos_collection(BlenderRNA *brna, Propert
                  "");
   RNA_def_string(
       func, "remote_url", nullptr, sizeof(bUserExtensionRepo::remote_url), "Remote URL", "");
+  RNA_def_enum(func,
+               "source",
+               rna_enum_preferences_extension_repo_source_type_items,
+               USER_EXTENSION_REPO_SOURCE_USER,
+               "Source",
+               "How the repository is managed");
 
   /* return type */
   parm = RNA_def_pointer(func, "repo", "UserExtensionRepo", "", "Newly added repository");