anchor.diff:    
     jobs = rec {
       tarball =
  -      { libamivideo ? {outPath = ./.; rev = 1234;}
  -      , officialRelease ? false
  -      }:
  -
         with pkgs;
   
         releaseTools.sourceTarball {
  
positive.code:       };
        
      build =
        { tarball ? jobs.tarball {} }:
        
        (pkgs.lib.genAttrs systems (system:
          with import nixpkgs { inherit system; };
          
  
negative.code: , systems ? [ "i686-linux" "x86_64-linux" ]
  , buildForAmiga ? false
  , amigaosenvPath ? <amigaosenv>
  , libamivideo ? {outPath = ./.; rev = 1234;}
  , officialRelease ? false
  }:
  
  let
  