* 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/tools/graphics/graphviz/builder.sh

@@ -1,5 +1,3 @@
-#! /bin/sh -e
-
 buildinputs="$x11 $libpng $libjpeg $expat $freetype"
 . $stdenv/setup
 

pkgs/tools/graphics/graphviz/default.nix

@@ -3,9 +3,8 @@
 assert x11 != null && libpng != null && libjpeg != null
   && expat != null;
 
-derivation {
+stdenv.mkDerivation {
   name = "graphviz-1.10";
-  system = stdenv.system;
 
   builder = ./builder.sh;
   src = fetchurl {
@@ -13,7 +12,6 @@ derivation {
     md5 = "e1402531abff68d146bf94e72b44dc2a";
   };
 
-  stdenv = stdenv;
   x11 = x11;
   libpng = libpng;
   libjpeg = libjpeg;