anchor.diff:        elpaBuild {
           pname = "exwm";
           ename = "exwm";
  -        version = "0.26";
  -        src = fetchurl {
  -          url = "https://elpa.gnu.org/packages/exwm-0.26.tar";
  -          sha256 = "03pg0r8a5vb1wc5grmjgzql74p47fniv47x39gdll5s3cq0haf6q";
  +        version = "0.27";
  +        src = fetchurl {
  +          url = "https://elpa.gnu.org/packages/exwm-0.27.tar";
  +          sha256 = "094k33clmxhnab0wniyrs48sdz28kna2g6fmkhsd7n20nmhhc4sn";
           };
           packageRequires = [ xelb ];
           meta = {
  
positive.code:         packageRequires = [ emacs ];
          meta = {
            homepage = "https://elpa.gnu.org/packages/code-cells.html";
            license = lib.licenses.free;
          };
        }) {};
      coffee-mode = callPackage ({ elpaBuild, fetchurl, lib }:
        elpaBuild {
          pname = "coffee-mode";
          ename = "coffee-mode";
          version = "0.4.1.1";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/coffee-mode-0.4.1.1.el";
            sha256 = "1jffd8rqmc3l597db26rggis6apf91glyzm1qvpf5g3iz55g6slz";
          };
          packageRequires = [];
          meta = {
            homepage = "https://elpa.gnu.org/packages/coffee-mode.html";
            license = lib.licenses.free;
          };
        }) {};
  
negative.code:       elpaBuild {
          pname = "org-transclusion";
          ename = "org-transclusion";
          version = "1.3.1";
          src = fetchurl {
            url = "https://elpa.gnu.org/packages/org-transclusion-1.3.1.tar";
            sha256 = "1v7i2i28500p4gvikcpp931qpks9zmvfpf6lfzrqdqppx2ix295q";
          };
          packageRequires = [ emacs org ];
          meta = {
  