Improved builder for Sqitch

pkgs/development/tools/misc/sqitch/default.nix

@@ -1,20 +1,15 @@
-{ stdenv, writeScript, makeWrapper, sqitchModule }:
-stdenv.mkDerivation rec {
-  name = "sqitch-0.999";
-  buildInputs = [ makeWrapper ];
-  builder = writeScript (name + "-builder.sh") ''
-    . ${stdenv}/setup
+{ name, stdenv, perl, makeWrapper, sqitchModule, databaseModule }:
+stdenv.mkDerivation {
+  name = "${name}-${sqitchModule.version}";
+  buildInputs = [ perl makeWrapper sqitchModule databaseModule ];
+  unpackPhase = ":";
+  buildPhase = ":";
+  installPhase = ''
     mkdir -p $out/bin
     for d in bin/sqitch etc lib share ; do
       ln -s ${sqitchModule}/$d $out/$d
     done
-    fixupPhase
-    wrapProgram $out/bin/sqitch \
-      --prefix PERL5LIB : \
-      "$(for i in $(cat ${sqitchModule}/nix-support/propagated-native-build-inputs) ; do
-           echo -n "$i"/lib/perl5/site_perl:
-         done
-         echo ${sqitchModule}/lib/perl5/site_perl
-        )"
   '';
+  dontStrip = true;
+  postFixup = "wrapProgram $out/bin/sqitch --prefix PERL5LIB : $PERL5LIB";
 }