* Remove trivial builders.

* Make builders unexecutable by removing the hash-bang line and
  execute permission.
* Convert calls to `derivation' to `mkDerivation'.
* Remove `system' and `stdenv' attributes from calls to
  `mkDerivation'.  These transformations were all done automatically,
  so it is quite possible I broke stuff.
* Put the `mkDerivation' function in stdenv/generic.

svn path=/nixpkgs/trunk/; revision=874

pkgs/development/libraries/zlib/builder.sh

@@ -1,4 +0,0 @@
-#! /bin/sh -e
-. $stdenv/setup
-configureFlags="--shared"
-genericBuild

pkgs/development/libraries/zlib/default.nix

@@ -1,12 +1,11 @@
 {stdenv, fetchurl}:
 
-derivation {
+stdenv.mkDerivation {
   name = "zlib-1.2.1";
-  system = stdenv.system;
   builder = ./builder.sh;
   src = fetchurl {
     url = http://www.gzip.org/zlib/zlib-1.2.1.tar.gz;
     md5 = "ef1cb003448b4a53517b8f25adb12452";
   };
-  inherit stdenv;
+  configureFlags = "--shared";
 }