anchor.diff:  
     sleepycat = spdx {
       spdxId = "Sleepycat";
  -    fullName  = "Sleepycat License";
  -  };
  -
  -  tcltk = {
  -    fullName = "Tcl/Tk license";
  -    url = http://www.tcl.tk/software/tcltk/license.html;
  +    fullName = "Sleepycat License";
  +  };
  +
  +  tcltk = spdx {
  +    spdxId = "TCL";
  +    fullName = "TCL/TK License";
     };
   
     unfree = {
  
positive.code:     fullName = "libpng License";
    };
  
    libtiff = {
      fullName = "libtiff license";
      url = https://fedoraproject.org/wiki/Licensing/libtiff;
    };
  
    llgpl21 = {
  
negative.code:     # channel and NixOS images.
    };
  
    unlicense = spdx {
      spdxId = "Unlicense";
      fullName = "The Unlicense";
    };
  
    wadalab = {
  