libsidplayfp: 1.8.7 -> 2.0.4

pkgs/development/libraries/libsidplayfp/default.nix

@@ -1,34 +1,41 @@
-{ stdenv, fetchurl, pkgconfig
-, docSupport ? true, doxygen ? null, graphviz ? null }:
+{ stdenv
+, lib
+, fetchurl
+, pkgconfig
+, docSupport ? true
+, doxygen ? null
+, graphviz ? null
+}:
 
 assert docSupport -> doxygen != null && graphviz != null;
-
+let
+  inherit (lib) optionals optionalString;
+  inherit (lib.versions) majorMinor;
+in
 stdenv.mkDerivation rec {
   pname = "libsidplayfp";
-  major = "1";
-  minor = "8";
-  level = "7";
-  version = "${major}.${minor}.${level}";
+  version = "2.0.4";
 
   src = fetchurl {
-    url = "mirror://sourceforge/sidplay-residfp/${pname}/${major}.${minor}/${pname}-${version}.tar.gz";
-    sha256 = "14k1sbdcbhykwfcadq5lbpnm9xp2r7vs7fyi84h72g89y8pjg0da";
+    url = "mirror://sourceforge/sidplay-residfp/${pname}/${majorMinor version}/${pname}-${version}.tar.gz";
+    sha256 = "0d866czmnmhnhb2j37rlrdphjdi2b75kak9barm9xqwg2z0nmmhz";
   };
 
   nativeBuildInputs = [ pkgconfig ]
-    ++ stdenv.lib.optionals docSupport [ doxygen graphviz ];
+    ++ optionals docSupport [ doxygen graphviz ];
 
   installTargets = [ "install" ]
-    ++ stdenv.lib.optionals docSupport [ "doc" ];
+    ++ optionals docSupport [ "doc" ];
 
-  outputs = [ "out" ] ++ stdenv.lib.optionals docSupport [ "doc" ];
+  outputs = [ "out" ]
+    ++ optionals docSupport [ "doc" ];
 
-  postInstall = stdenv.lib.optionalString docSupport ''
+  postInstall = optionalString docSupport ''
     mkdir -p $doc/share/doc/libsidplayfp
     mv docs/html $doc/share/doc/libsidplayfp/
   '';
 
-  meta = with stdenv.lib; {
+  meta = with lib; {
     description = "A library to play Commodore 64 music derived from libsidplay2";
     homepage = "https://sourceforge.net/projects/sidplay-residfp/";
     license = with licenses; [ gpl2Plus ];