nixbld: fix gitea errors 500

https://github.com/go-gitea/gitea/issues/14274

nixbld-etc-nixos/configuration.nix

@@ -421,6 +421,14 @@ in
     matterbridge = super.matterbridge.overrideAttrs(oa: {
       patches = oa.patches or [] ++ [ ./matterbridge-disable-github.patch ];
     });
+    gitea = super.gitea.overrideAttrs(oa: {
+      preBuild = let tagsString = "pam sqlite sqlite_unlock_notify"; in ''
+        export buildFlagsArray=(
+          -tags="${tagsString}"
+          -ldflags='-X "main.Version=${oa.version}" -X "main.Tags=${tagsString}"'
+        )
+      '';
+    });
   };
 
   security.acme.acceptTerms = true;