programs/pop-launcher: update NixOS module

Now it assumes the package is patched to search its plugins and scripts
on its store path.

modules/nixos/programs/pop-launcher.nix

@@ -3,28 +3,11 @@
 let
   cfg = config.programs.pop-launcher;
 
-  # This assumes the package contains the built-in plugins being symlinked to
-  # the main binary with absolute paths. Most sensibly, the nixpkgs builder
-  # will rewrite symlinks relative to its output directory. Since we're putting
-  # them outside of its output directory, we'll have to stop it from doing
-  # that.
-  package = cfg.package.overrideAttrs (prev: {
-    dontRewriteSymlinks = true;
-  });
-
-  # Some plugins may be packaged busybox-style with multiple plugins in one
-  # binary.
-  plugins = lib.lists.map
-    (p: p.overrideAttrs (prev: {
-      dontRewriteSymlinks = true;
-    }))
-    cfg.plugins;
-
   # Plugins and scripts are assumed to be packaged at
   # `$out/share/pop-launcher`.
   pluginsDir = pkgs.symlinkJoin {
     name = "pop-launcher-plugins-system";
-    paths = builtins.map (p: "${p}/share/pop-launcher") (plugins ++ [ package ]);
+    paths = builtins.map (p: "${p}/share/pop-launcher") cfg.plugins;
   };
 in
 {
@@ -48,6 +31,14 @@ in
       description = ''
         The package where {command}`pop-launcher` binary and built-in plugins
         are expected.
+
+        ::: {.note}
+        The package is assumed to have been patched to search for the
+        derivation output path (at {file}`$out/share/pop-launcher`) instead of
+        the distribution plugins path (at {file}`/usr/lib/pop-launcher`).
+        Otherwise, the built-in plugins will not show up in the launcher
+        frontend.
+        :::
       '';
       default = pkgs.pop-launcher;
     };
@@ -56,7 +47,9 @@ in
       type = lib.types.listOf lib.types.package;
       description = ''
         List of packages containing Pop launcher plugins and scripts to be
-        installed as system-wide plugins.
+        installed as system-wide plugins. The launcher plugins and scripts of
+        each listed package are assumed to be installed at
+        {file}`$out/share/pop-launcher`.
       '';
       default = [ ];
       defaultText = "[]";
@@ -72,6 +65,6 @@ in
   config = lib.mkIf cfg.enable {
     environment.etc.pop-launcher.source = pluginsDir;
 
-    environment.systemPackages = [ package ];
+    environment.systemPackages = [ cfg.package ];
   };
 }