anchor.diff:          mkdir -p $out/nix-support
   
           (
  -          echo "file log $out/stdout"
  -          echo "file log $out/stderr"
  +          echo "file log $out/log/stdout"
  +          echo "file log $out/log/stderr"
             for i in ${toString instNames}; do for l in console journal; do
  -            echo "file log $out/hosts/$i/$l.log"
  +            echo "file log $out/log/$i-$l.log"
             done; done
           ) >> $out/nix-support/hydra-build-products
   
  
positive.code:           mac = null;
            network = "net-@testid@";
          };
          consoleFile = "@build@/hosts/${name}/console.log";
          extraDevices = ''
            <serial type='file'>
              <source path='@build@/hosts/${name}/journal.log'/>
              <target port='1'/>
            </serial>
          '';
  
negative.code:       tailFiles = mkOption {
          type = with types; attrsOf str;
          default = {
            OUT = "log/stdout";
            ERR = "log/stderr";
          } // genAttrs instNames (n: "log/${n}-console.log")
            // genAttrs instNames (n: "log/${n}-journal.log");
        };
  
        test-driver = {
  