apptainer, singularity: deprecate workarounds for vendorHash overriding

Remove obsolete overriding workarounds for vendorHash, deleteVendor and
proxyVendor (through the <pkg>.override interface).

The workaround functionality has been fixed by commit eed069a5bc
("buildGoModule: fix overrideAttrs overriding"), and these arguments can
now be overridden using <pkg>.overrideAttrs.

doc/release-notes/rl-2505.section.md

@@ -8,6 +8,10 @@
 
 - `services.rippleDataApi` has been removed, as `ripple-data-api` was broken and had not been updated since 2022.
 
+- `apptainer` and `singularity` deprecate the workaround of overriding `vendorHash` and related attributes via `<pkg>.override`,
+  in favour of the unified overriding of the same group of attributes via `<pkg>.overrideAttrs`.
+  The compatibility layer will be removed in future releases.
+
 - `squid` has been updated to version 7, this release includes multiple breaking changes, like ESI removal.
   For more information, [check the release notes](https://github.com/squid-cache/squid/releases/tag/SQUID_7_0_1).
 

pkgs/applications/virtualization/singularity/generic.nix

@@ -16,7 +16,8 @@
 let
   # Backward compatibility layer for the obsolete workaround of
   # the "vendor-related attributes not overridable" issue (#86349),
-  # whose solution is merged and released.
+  # whose solution (#225051) is merged and released.
+  # TODO(@ShamrockLee): Remove after the Nixpkgs 25.05 branch-off.
   _defaultGoVendorArgs = {
     inherit vendorHash deleteVendor proxyVendor;
   };
@@ -96,14 +97,28 @@ in
   #   "path/to/source/file1" = [ "<originalDefaultPath11>" "<originalDefaultPath12>" ... ];
   # }
   sourceFilesWithDefaultPaths ? { },
-  # Workaround #86349
-  # should be removed when the issue is resolved
-  vendorHash ? _defaultGoVendorArgs.vendorHash,
-  deleteVendor ? _defaultGoVendorArgs.deleteVendor,
-  proxyVendor ? _defaultGoVendorArgs.proxyVendor,
+  # Placeholders for the obsolete workaround of #86349
+  # TODO(@ShamrockLee): Remove after the Nixpkgs 25.05 branch-off.
+  vendorHash ? null,
+  deleteVendor ? null,
+  proxyVendor ? null,
 }@args:
 
 let
+  # Backward compatibility layer for the obsolete workaround of #86349
+  # TODO(@ShamrockLee): Convert to simple inheritance after the Nixpkgs 25.05 branch-off.
+  moduleArgsOverridingCompat =
+    argName:
+    if args.${argName} or null == null then
+      _defaultGoVendorArgs.${argName}
+    else
+      lib.warn
+        "${projectName}: Override ${argName} with .override is deprecated. Use .overrideAttrs instead."
+        args.${argName};
+  vendorHash = moduleArgsOverridingCompat "vendorHash";
+  deleteVendor = moduleArgsOverridingCompat "deleteVendor";
+  proxyVendor = moduleArgsOverridingCompat "proxyVendor";
+
   addShellDoubleQuotes = s: lib.escapeShellArg ''"'' + s + lib.escapeShellArg ''"'';
 in
 (buildGoModule {