gitstats: switch to fetchFromGitHub

pkgs/applications/version-management/gitstats/default.nix

@@ -1,14 +1,15 @@
-{ lib, stdenv, fetchzip, perl, python2, gnuplot, coreutils, gnugrep }:
+{ lib, stdenv, fetchFromGitHub, perl, python2, gnuplot, coreutils, gnugrep }:
 
 stdenv.mkDerivation rec {
   pname = "gitstats";
   version = "2016-01-08";
 
   # upstream does not make releases
-  src = fetchzip {
-    url = "https://github.com/hoxu/gitstats/archive/55c5c285558c410bb35ebf421245d320ab9ee9fa.zip";
-    sha256 = "1bfcwhksylrpm88vyp33qjby4js31zcxy7w368dzjv4il3fh2i59";
-    name = "${pname}-${version}" + "-src";
+  src = fetchFromGitHub {
+    owner = "hoxu";
+    repo = "gitstats";
+    rev = "55c5c285558c410bb35ebf421245d320ab9ee9fa";
+    sha256 = "sha256-qUQB3aCRbPkbMoMf39kPQ0vil8RjXL8RqjdTryfkzK0=";
   };
 
   nativeBuildInputs = [ perl ];