Nix-expr style review

Unneded args.something replaced with
args: with args;
line. After this line args is the only place where we can recieve variables from.

Also removed several
buildInputs = [];
lines.

svn path=/nixpkgs/trunk/; revision=10415

pkgs/development/libraries/gsl/default.nix

@@ -1,14 +1,12 @@
-args:
-args.stdenv.mkDerivation {
+args: with args;
+stdenv.mkDerivation {
   name = "gsl-1.9";
 
-  src = args.fetchurl {
+  src = fetchurl {
     url = ftp://ftp.gnu.org/gnu/gsl/gsl-1.9.tar.gz;
     sha256 = "0l12js65c1qf3s7gmgay6gj5nbs6635py41dj8nk3hlp95wcdlgw";
   };
 
-  buildInputs =(with args; []);
-
   meta = { 
       description = "numerical library (>1000 functions)";
       homepage = http://www.gnu.org/software/gsl;