rake: 12.3.1 -> 12.3.2, use bundlerApp

pkgs/development/tools/build-managers/rake/default.nix

@@ -1,15 +1,15 @@
-{ lib, bundlerEnv, ruby }:
+{ lib, bundlerApp }:
 
-bundlerEnv {
-  name = "rake-${(import ./gemset.nix).rake.version}";
-
-  inherit ruby;
+bundlerApp {
+  pname = "rake";
   gemdir = ./.;
+  exes = [ "rake" ];
 
   meta = with lib; {
     description = "A software task management and build automation tool";
     homepage = https://github.com/ruby/rake;
     license  = with licenses; mit;
+    maintainers = with maintainers; [ manveru ];
     platforms = platforms.unix;
   };
 }