netpbm: add meta.changelog

Author: dotlambda

pkgs/by-name/ne/netpbm/package.nix

@@ -17,7 +17,7 @@
   buildPackages,
 }:
 
-stdenv.mkDerivation {
+stdenv.mkDerivation rec {
   # Determine version and revision from:
   # https://sourceforge.net/p/netpbm/code/HEAD/log/?path=/advanced
   pname = "netpbm";
@@ -129,6 +129,7 @@ stdenv.mkDerivation {
   passthru.updateScript = ./update.sh;
 
   meta = {
+    changelog = "https://sourceforge.net/p/netpbm/code/${src.rev}/tree/advanced/doc/HISTORY";
     homepage = "https://netpbm.sourceforge.net/";
     description = "Toolkit for manipulation of graphic images";
     license = lib.licenses.free; # http://netpbm.svn.code.sourceforge.net/p/netpbm/code/trunk/doc/copyright_summary