abcde: simplify wrapper code

pkgs/applications/audio/abcde/default.nix

@@ -33,34 +33,17 @@ in
 
     '';
 
-    # no ELFs in this package, only scripts
-    dontStrip = true;
-    dontPatchELF = true;
-
     buildInputs = [ makeWrapper ];
 
     propagatedBuildInputs = [ perl DigestSHA MusicBrainz MusicBrainzDiscID ];
 
     installFlags = [ "sysconfdir=$(out)/etc" ];
 
-    postInstall = ''
-    #   substituteInPlace "$out/bin/cddb-tool" \
-    #      --replace '#!/bin/sh' '#!${bash}/bin/sh'
-    #   substituteInPlace "$out/bin/abcde" \
-    #      --replace '#!/bin/bash' '#!${bash}/bin/bash'
-
-      # generic fixup script should be doing this, but it ignores this file for some reason
-      substituteInPlace "$out/bin/abcde-musicbrainz-tool" \
-         --replace '#!/usr/bin/perl' '#!${perl}/bin/perl'
-
-      wrapProgram "$out/bin/abcde" --prefix PATH ":" \
+    postFixup = ''
+      for cmd in abcde cddb-tool abcde-musicbrainz-tool; do
+        wrapProgram "$out/bin/$cmd" --prefix PATH ":" \
           ${stdenv.lib.makeBinPath [ "$out" which libcdio cddiscid wget vorbis-tools id3v2 eyeD3 lame flac glyr ]}
-
-      wrapProgram "$out/bin/cddb-tool" --prefix PATH ":" \
-        "${wget}/bin"
-
-      wrapProgram "$out/bin/abcde-musicbrainz-tool" --prefix PATH ":" \
-        "${wget}/bin"
+      done
     '';
 
     meta = {