ed: update to 1.10, working around *.lz problem

pkgs/applications/editors/ed/default.nix

···
 { fetchurl, stdenv }:
 
 stdenv.mkDerivation rec {
-  name = "ed-1.9";
+  name = "ed-1.10";
 
   src = fetchurl {
-    url = "mirror://gnu/ed/${name}.tar.gz";
-    sha256 = "122syihsx2hwzj75mkf5a9ssiky2xby748kp4cc00wzhmp7p5cym";
+    # gnu only provides *.lz tarball, which is unfriendly for stdenv bootstrapping
+    #url = "mirror://gnu/ed/${name}.tar.gz";
+    url = "http://pkgs.fedoraproject.org/repo/extras/ed/${name}.tar.bz2"
+      + "/38204d4c690a17a989e802ba01b45e98/${name}.tar.bz2";
+    sha256 = "16qvshl8470f3znjfrrci3lzllqkzc6disk5kygzsg9hh4f6wysq";
   };
 
   /* FIXME: Tests currently fail on Darwin: