add libxmp 4.2.7

pkgs/development/libraries/libxmp/default.nix

@@ -0,0 +1,23 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  name = "libxmp-4.2.7";
+
+  meta = with stdenv.lib; {
+    description = "Extended module player library";
+    homepage    = "http://xmp.sourceforge.net/";
+    longDescription = ''
+      Libxmp is a library that renders module files to PCM data. It supports
+      over 90 mainstream and obscure module formats including Protracker (MOD),
+      Scream Tracker 3 (S3M), Fast Tracker II (XM), and Impulse Tracker (IT).
+    '';
+    license     = licenses.lgpl21Plus;
+    platforms   = platforms.linux;
+    maintainers = with maintainers; [ iyzsong ];
+  };
+
+  src = fetchurl {
+    url = "mirror://sourceforge/xmp/libxmp/${name}.tar.gz";
+    sha256 = "1isv8498869w8wc18lagi1p40z4blx684r21j9cligkfyrmri536";
+  };
+}

pkgs/top-level/all-packages.nix

@@ -5488,6 +5488,8 @@ let
 
   libxmlxx = callPackage ../development/libraries/libxmlxx { };
 
+  libxmp = callPackage ../development/libraries/libxmp { };
+
   libxslt = callPackage ../development/libraries/libxslt { };
 
   libixp_for_wmii = lowPrio (import ../development/libraries/libixp_for_wmii {