fix: point each Amiberry build pin at its repo

KNULLI builds amiberry from Batocera's package through its batocera
submodule: the reference now names knulli-linux at 20260511, the tag
platforms/knulli.yml is read at, and the package file below the
submodule. check_freshness follows a path .gitmodules declares to the
commit the tree pins, which reads AMIBERRY_VERSION = v7.1.0 there.

RetroBat pins amiberry 8.3.0.0 only in emulators/versions.xml on its
download server, read by emulatorLauncher/Installer.cs. No repository
holds it, so amiberry-8.3.0 keeps pin_frozen, which says so, and no
pin_build.

emulators/amiberry-7.1.1.yml

@@ -7,7 +7,7 @@ profiled_date: "2026-11-09"
 source_commit: "c53d6db770a5580732a7f2bb48abcbfcd95fd0f4"
 pin_frozen: "AmberELEC builds this revision (AmberELEC packages/games/emulators/amiberry/package.mk:6\
   \ at a21975b), KNULLI the v7.1.0 tag through its batocera submodule (batocera package/batocera/emulators/amiberry/amiberry.mk:7\
-  \ at 487014d). The two read the same files: equal ROM database, folders, scan and booter, the changes\
+  \ at 487014d, the commit knulli-linux 20260511 pins). The two read the same files: equal ROM database, folders, scan and booter, the changes\
   \ between them being hotkeys, the GUI font and the plugins folder."
 pin_build:
 - platform: amberelec
@@ -17,9 +17,9 @@ pin_build:
   variable: PKG_VERSION
   value: "c53d6db770a5580732a7f2bb48abcbfcd95fd0f4"
 - platform: knulli
-  repo: "https://github.com/batocera-linux/batocera.linux"
-  revision: "487014d91147610ebdd62f870009d4563ac61763"
-  path: "package/batocera/emulators/amiberry/amiberry.mk"
+  repo: "https://github.com/knulli-cfw/knulli-linux"
+  revision: "20260511"
+  path: "batocera/package/batocera/emulators/amiberry/amiberry.mk"
   variable: AMIBERRY_VERSION
   value: "v7.1.0"
 core_version: "7.1.1"

emulators/amiberry-8.3.0.yml

@@ -6,15 +6,9 @@ upstream: "https://github.com/tonioni/WinUAE"
 profiled_date: "2026-11-09"
 source_commit: "110ab1b08c010f8b1f873310add18cc66dae4f24"
 pin_frozen: "RetroBat, the only platform that ships it, installs the Windows build of the v8.3.0 tag\
-  \ (RetroBat emulators/versions.xml lists amiberry 8.3.0.0 on its stable channel, RetroBat emulatorLauncher/Installer.cs:26,\
-  \ 199-237 reads it). Later releases are not part of that install."
-pin_build:
-- platform: retrobat
-  repo: "https://www.retrobat.org/repo/win64"
-  revision: "stable"
-  path: "emulators/versions.xml"
-  variable: amiberry
-  value: "8.3.0.0"
+  \ (emulators/versions.xml on its download server lists amiberry 8.3.0.0 for the stable channel, which\
+  \ emulatorLauncher/Installer.cs:26, 199-237 reads). No repository holds that list. Later releases are not\
+  \ part of that install."
 core_version: "8.3.0"
 version_basis:
   kind: file

scripts/check_freshness.py

@@ -1615,6 +1615,17 @@ def check_pin_builds(
                 at = revision or upstream.resolve_head(repo, cache_dir, offline)
                 lines = upstream.fetch_file(repo, at, reference["path"], cache_dir, offline) \
                     if at else None
+                if at and lines is None:
+                    # A file of a submodule is read at the commit the
+                    # platform's tree pins: KNULLI builds Batocera's
+                    # amiberry package through its batocera submodule.
+                    modules = upstream.fetch_file(repo, at, ".gitmodules", cache_dir, offline)
+                    declared = upstream.submodule_urls("\n".join(modules or ()), repo)
+                    if any(reference["path"].startswith(f"{p}/") for p in declared):
+                        linked = upstream.through_gitlink(repo, at, reference["path"],
+                                                          cache_dir, offline)
+                        if linked is not None:
+                            lines = upstream.fetch_file(*linked, cache_dir, offline)
             except upstream.NotCachedError:
                 findings.append(Finding("profiles", subject, SKIPPED, local=recorded[:12],
                                         detail="offline, the build file is not cached"))

tests/test_pin_build.py

@@ -86,6 +86,28 @@ class HeldPinsReadTheirBuildFileAgain(unittest.TestCase):
         self.assertEqual(found["mame0278 (recalbox)"].status, cf.STALE)
         self.assertIn("is gone", found["mame0278 (recalbox)"].detail)
 
+    def test_a_file_of_a_submodule_is_read_at_its_gitlink(self):
+        """KNULLI builds Batocera's amiberry package through its batocera
+        submodule: the file is not in knulli-linux's own tree."""
+        self._platform("10.2")
+        ref = {**self.REF, "path": "batocera/package/amiberry/amiberry.mk",
+               "variable": "AMIBERRY_VERSION", "value": "v7.1.0"}
+        modules = ['[submodule "batocera"]', "\tpath = batocera",
+                   "\turl = https://github.com/batocera-linux/batocera.linux.git"]
+
+        def fetch(repo, sha, path, *_args):
+            if path == ".gitmodules":
+                return modules
+            if repo.slug == "batocera-linux/batocera.linux" and sha == "c" * 40:
+                return ["AMIBERRY_VERSION = v7.1.0"]
+            return None
+
+        profiles = {"amiberry": {"pin_frozen": "x", "pin_build": [ref]}}
+        with mock.patch.object(cf.upstream, "fetch_file", side_effect=fetch), \
+                mock.patch.object(cf.upstream, "list_gitlinks", return_value={"batocera": "c" * 40}):
+            (row,) = cf.check_pin_builds(profiles, self.platforms, "cache", False)
+        self.assertEqual(row.status, cf.OK, row.detail)
+
     def test_offline_and_uncached_is_skipped(self):
         self._platform("10.2")
         profiles = {"mame0278": {"pin_frozen": "x", "pin_build": [self.REF]}}