zlog: enable on darwin

pkgs/development/libraries/zlog/default.nix

@@ -1,33 +1,23 @@
-{ stdenv, fetchzip }:
+{ stdenv, fetchFromGitHub }:
 
 stdenv.mkDerivation rec {
   version = "1.2.15";
   pname = "zlog";
 
-  src = fetchzip {
-    name = "${pname}-${version}-src";
-    url = "https://github.com/HardySimpson/zlog/archive/${version}.tar.gz";
+  src = fetchFromGitHub {
+    owner = "HardySimpson";
+    repo = pname;
+    rev = version;
     sha256 = "10hzifgpml7jm43y6v8c8q0cr9ziyx9qxznafxyw6glhnlqnb7pb";
   };
 
-  configurePhase = ''
-    sed -i 's;-Werror;;' src/makefile
-  '';
-
-  buildPhase = ''
-    mkdir -p $out
-    make PREFIX=$out
-  '';
-
-  installPhase = ''
-    make PREFIX=$out install
-  '';
+  makeFlags = [ "PREFIX=${placeholder "out"}" ];
 
   meta = with stdenv.lib; {
     description= "Reliable, high-performance, thread safe, flexible, clear-model, pure C logging library";
-    homepage = "http://hardysimpson.github.com/zlog";
+    homepage = "https://hardysimpson.github.io/zlog/";
     license = licenses.lgpl21;
-    platforms = platforms.linux; # cannot test on something else
+    platforms = platforms.unix;
     maintainers = [ maintainers.matthiasbeyer ];
   };