go-bindata: use fetchFromGitHub

Cleaned up expression as well. Verified sha256 is reproducible and unchanged.

pkgs/development/tools/go-bindata/default.nix

@@ -1,25 +1,25 @@
-{ stdenv, buildGoPackage, fetchgit }:
+{ stdenv, buildGoPackage, fetchFromGitHub }:
 
-buildGoPackage rec {
+buildGoPackage {
   pname = "go-bindata";
-  version = "20151023-${stdenv.lib.strings.substring 0 7 rev}";
-  rev = "a0ff2567cfb70903282db057e799fd826784d41d";
-
+  version = "unstable-2015-10-23";
+
   goPackagePath = "github.com/jteeuwen/go-bindata";
 
-  src = fetchgit {
-    inherit rev;
-    url = "https://github.com/jteeuwen/go-bindata";
+  src = fetchFromGitHub {
+    owner = "jteeuwen";
+    repo = "go-bindata";
+    rev = "a0ff2567cfb70903282db057e799fd826784d41d";
     sha256 = "0d6zxv0hgh938rf59p1k5lj0ymrb8kcps2vfrb9kaarxsvg7y69v";
   };
 
   excludedPackages = "testdata";
 
   meta = with stdenv.lib; {
-    homepage    = "https://github.com/jteeuwen/go-bindata";
+    homepage = "https://github.com/jteeuwen/go-bindata";
     description = "A small utility which generates Go code from any file, useful for embedding binary data in a Go program";
     maintainers = with maintainers; [ cstrahan ];
-    license     = licenses.cc0 ;
-    platforms   = platforms.all;
+    license = licenses.cc0;
+    platforms = platforms.all;
   };
 }