From 0b6293a79865fb4556b0bd02e0a41e96e9a56545 Mon Sep 17 00:00:00 2001
From: Sam James <sam@gentoo.org>
Date: Sat, 5 Mar 2022 04:44:48 +0000
Subject: [PATCH] porttree: skip metadata verification if repository is
 immutable

Closes: https://bugs.gentoo.org/528394
Signed-off-by: Sam James <sam@gentoo.org>
---
 lib/portage/dbapi/porttree.py    | 5 +++--
 lib/portage/repository/config.py | 7 +++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/lib/portage/dbapi/porttree.py b/lib/portage/dbapi/porttree.py
index cd919ba31..fa927165c 100644
--- a/lib/portage/dbapi/porttree.py
+++ b/lib/portage/dbapi/porttree.py
@@ -616,7 +616,8 @@ class portdbapi(dbapi):
         if ro_auxdb is not None:
             auxdbs.append(ro_auxdb)
         auxdbs.append(self.auxdb[repo_path])
-        eclass_db = self.repositories.get_repo_for_location(repo_path).eclass_db
+        repo = self.repositories.get_repo_for_location(repo_path)
+        eclass_db = repo.eclass_db
 
         for auxdb in auxdbs:
             try:
@@ -639,7 +640,7 @@ class portdbapi(dbapi):
                 # EAPI from _parse_eapi_ebuild_head, we disregard cache entries
                 # for unsupported EAPIs.
                 continue
-            if auxdb.validate_entry(metadata, ebuild_hash, eclass_db):
+            if repo.immutable or auxdb.validate_entry(metadata, ebuild_hash, eclass_db):
                 break
         else:
             metadata = None
diff --git a/lib/portage/repository/config.py b/lib/portage/repository/config.py
index 0b591d94f..7f0fa7448 100644
--- a/lib/portage/repository/config.py
+++ b/lib/portage/repository/config.py
@@ -120,6 +120,7 @@ class RepoConfig:
         "find_invalid_path_char",
         "force",
         "format",
+        "immutable",
         "local_config",
         "location",
         "main_repo",
@@ -200,6 +201,8 @@ class RepoConfig:
         self.eclass_db = None
         self.eclass_locations = None
 
+        self.immutable = repo_opts.get("immutable", "false").lower() in ("true", "yes")
+
         if local_config or "masters" in force:
             # Masters from repos.conf override layout.conf.
             masters = repo_opts.get("masters")
@@ -660,6 +663,9 @@ class RepoConfigLoader:
                     if repos_conf_opts is not None:
                         # Selectively copy only the attributes which
                         # repos.conf is allowed to override.
+                        # 'immutable' is intentionally not here as
+                        # the use case for this is local modifications for development
+                        # and we can't assume people are generating metadata for each change.
                         for k in (
                             "aliases",
                             "auto_sync",
@@ -1211,6 +1217,7 @@ class RepoConfigLoader:
 
     def config_string(self):
         bool_keys = (
+            "immutable",
             "strict_misc_digests",
             "sync_allow_hardlinks",
             "sync_openpgp_key_refresh",
-- 
2.37.1