nixos/gitea: Symlink gitea locales to match running gitea version

This prevents issues when gitea adds new locales etc. And if they
change locale values in future versions. Or if you rollback to a
previous version of gitea it might be a good idea to use the previous
locale files.

nixos/modules/services/misc/gitea.nix

@@ -261,7 +261,8 @@ in
         runConfig = "${cfg.stateDir}/custom/conf/app.ini";
         secretKey = "${cfg.stateDir}/custom/conf/secret_key";
       in ''
-        mkdir -p ${cfg.stateDir}
+        # Make sure that the stateDir exists, as well as the conf dir in there
+        mkdir -p ${cfg.stateDir}/conf
 
         # copy custom configuration and generate a random secret key if needed
         ${optionalString (cfg.useWizard == false) ''
@@ -290,11 +291,13 @@ in
           sed -ri 's,/nix/store/[a-z0-9.-]+/bin/bash,${pkgs.bash}/bin/bash,g' $HOOKS
           sed -ri 's,/nix/store/[a-z0-9.-]+/bin/perl,${pkgs.perl}/bin/perl,g' $HOOKS
         fi
-        if [ ! -d ${cfg.stateDir}/conf/locale ]
+        # If we have a folder or symlink with gitea locales, remove it
+        if [ -e ${cfg.stateDir}/conf/locale ]
         then
-          mkdir -p ${cfg.stateDir}/conf
-          cp -r ${gitea.out}/locale ${cfg.stateDir}/conf/locale
+          rm -r ${cfg.stateDir}/conf/locale
         fi
+        # And symlink the current gitea locales in place
+        ln -s ${gitea.out}/locale ${cfg.stateDir}/conf/locale
         # update command option in authorized_keys
         if [ -r ${cfg.stateDir}/.ssh/authorized_keys ]
         then