n2048: refactor

pkgs/games/n2048/default.nix

···
-{lib, stdenv, fetchurl, ncurses}:
-let
-  s =
-  rec {
-    baseName = "n2048";
-    version = "0.1";
-    name = "${baseName}-${version}";
-    url = "http://www.dettus.net/n2048/${baseName}_v${version}.tar.gz";
+{ lib, stdenv, fetchurl, ncurses }:
+
+stdenv.mkDerivation rec {
+  pname = "n2048";
+  version = "0.1";
+  src = fetchurl {
+    url = "http://www.dettus.net/n2048/n2048_v${version}.tar.gz";
     sha256 = "184z2rr0rnj4p740qb4mzqr6kgd76ynb5gw9bj8hrfshcxdcg1kk";
   };
   buildInputs = [
     ncurses
   ];
-in
-stdenv.mkDerivation {
-  inherit (s) name version;
-  inherit buildInputs;
-  src = fetchurl {
-    inherit (s) url sha256;
-  };
   makeFlags = [
     "DESTDIR=$(out)"
   ];
   preInstall = ''
     mkdir -p "$out"/{share/man,bin}
   '';
-  meta = {
-    inherit (s) version;
+  meta = with lib; {
     description = "Console implementation of 2048 game";
-    license = lib.licenses.bsd2;
-    maintainers = [lib.maintainers.raskin];
-    platforms = lib.platforms.linux;
+    license = licenses.bsd2;
+    maintainers = with maintainers; [ raskin ];
+    platforms = platforms.linux;
     homepage = "http://www.dettus.net/n2048/";
   };
 }