Add version attribute where maintainers |= nckx

This will probably be mandatory soon, and is a step in the right
direction. Removes the deprecated meta.version, and move some meta
sections to the end of the file where I should have put them in
the first place.

pkgs/applications/audio/id3v2/default.nix

@@ -1,8 +1,9 @@
 {stdenv, fetchurl, id3lib, groff, zlib}:
 
-let version = "0.1.12"; in
 stdenv.mkDerivation rec {
   name = "id3v2-${version}";
+  version = "0.1.12";
+
   src = fetchurl {
     url = "mirror://sourceforge/id3v2/${name}.tar.gz";
     sha256 = "1gr22w8gar7zh5pyyvdy7cy26i47l57jp1l1nd60xfwx339zl1c1";
@@ -19,7 +20,6 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with stdenv.lib; {
-    inherit version;
     description = "A command line editor for id3v2 tags";
     homepage = http://id3v2.sourceforge.net/;
     license = licenses.gpl2Plus;