discord: recreate module symlinks on every launch (#530640)

pkgs/applications/networking/instant-messengers/discord/linux.nix

@@ -153,14 +153,13 @@ let
   stageModules = writeShellScript "discord-stage-modules" ''
     store_modules="$1"
     modules_dir="''${XDG_CONFIG_HOME:-$HOME/.config}/${lib.toLower binaryName}/${version}/modules"
-    if [ ! -f "$modules_dir/installed.json" ]; then
-      mkdir -p "$modules_dir"
-      for m in ${lib.concatStringsSep " " (lib.attrNames moduleSrcs)}; do
-        ln -sfn "$store_modules/$m" "$modules_dir/$m"
-      done
-      echo '${builtins.toJSON (lib.mapAttrs (_: mod: { installedVersion = mod; }) moduleVersions)}' \
-        > "$modules_dir/installed.json"
-    fi
+    rm -rf "$modules_dir"
+    mkdir -p "$modules_dir"
+    for m in ${lib.concatStringsSep " " (lib.attrNames moduleSrcs)}; do
+      ln -sn "$store_modules/$m" "$modules_dir/$m"
+    done
+    echo '${builtins.toJSON (lib.mapAttrs (_: mod: { installedVersion = mod; }) moduleVersions)}' \
+      > "$modules_dir/installed.json"
   '';
 
   disableBreakingUpdates =