bundlerUpdateScript: init and use (#64822)

pkgs/tools/package-management/fpm/default.nix

@@ -1,15 +1,17 @@
-{ lib, bundlerApp }:
+{ lib, bundlerApp, bundlerUpdateScript }:
 
 bundlerApp {
   pname = "fpm";
   gemdir = ./.;
   exes = [ "fpm" ];
 
+  passthru.updateScript = bundlerUpdateScript "fpm";
+
   meta = with lib; {
     description = "Tool to build packages for multiple platforms with ease";
     homepage    = https://github.com/jordansissel/fpm;
     license     = licenses.mit;
-    maintainers = with maintainers; [ manveru ];
+    maintainers = with maintainers; [ manveru nicknovitski ];
     platforms   = platforms.unix;
   };
 }

pkgs/tools/package-management/fpm/update

@@ -1,10 +0,0 @@
-#!/usr/bin/env nix-shell
-#! nix-shell -i bash -p bash ruby bundler bundix
-
-rm Gemfile.lock
-bundler install
-bundix
-
-if [ "clean" == "$1" ]; then
-  rm -r ~/.gem
-fi