anchor.diff:        }) {};
       ivy = callPackage ({ elpaBuild, emacs, fetchurl, lib }: elpaBuild {
           pname = "ivy";
  -        version = "0.9.0";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/ivy-0.9.0.tar";
  -          sha256 = "1p5gfy16xik613ib30mv4yac004z4lpsybmraln1badyd6n3b07s";
  +        version = "0.9.1";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/ivy-0.9.1.tar";
  +          sha256 = "1jfc3zf6ln7i8pp5j0fpsai2w847v5g77b5fzlxbgvj80g3v5887";
           };
           packageRequires = [ emacs ];
           meta = {
  
positive.code:       }) {};
      auctex = callPackage ({ elpaBuild, fetchurl, lib }: elpaBuild {
          pname = "auctex";
          version = "11.90.0";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/auctex-11.90.0.tar";
            sha256 = "04nsndwcf0dimgc2p1yzzrymc36amzdnjg0158nxplmjkzdp28gy";
          };
          packageRequires = [];
          meta = {
  
negative.code:           license = lib.licenses.free;
          };
        }) {};
      enwc = callPackage ({ elpaBuild, emacs, fetchurl, lib }: elpaBuild {
          pname = "enwc";
          version = "2.0";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/enwc-2.0.tar";
            sha256 = "17w35b06am5n19nlq00ni5w3jvys9i7swyw4glb7081d2jbij2mn";
          };
          packageRequires = [ emacs ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/enwc.html";
            license = lib.licenses.free;
  