anchor.diff:    src = fetchFromGitHub {
       owner  = "chipsalliance";
       repo   = "yosys-f4pga-plugins";
  -    rev    = "aadd1735b2b7af0472e56dc23f1035d6e1904712";
  -    hash   = "sha256-gmpEx+8XDN7f+6e/YG25VKgdadwqApPqU3S6OB4AryA=";
  +    rev    = "27208ce08200a5e89e3bd4f466bc68824df38c32";
  +    hash   = "sha256-S7txjzlIp+idWIfp/DDOznluA3aMFfosMUt5dvi+g44=";
     };
   
  -  version = "2022.05.13";
  +  version = "2022.09.27";
   
     # Supported symbiflow plugins.
     #
  
positive.code: , python3
  , readline
  , stdenv
  , which
  , yosys
  , zlib
  , yosys-symbiflow
  
negative.code:   inherit src version plugin;
    enableParallelBuilding = true;
  
    nativeBuildInputs = [ python3 ];
    buildInputs = [ yosys readline zlib uhdm surelog ];
  
    # xdc has an incorrect path to a test which has yet to be patched
  