anchor.diff:                "mount LABEL=boot /mnt/boot",
             );
           '';
  -      fileSystems = rootFS + bootFS;
       };
   
     # Create two physical LVM partitions combined into one volume group
  
positive.code: 
  
    # The configuration to install.
    config = { fileSystems, testChannel, grubVersion, grubDevice }: pkgs.writeText "configuration.nix"
      ''
        { config, pkgs, modulesPath, ... }:
  
  
negative.code: 
  
    makeInstallerTest =
      { createPartitions, testChannel ? false, grubVersion ? 2, grubDevice ? "/dev/vda" }:
      makeTest {
        inherit iso;
        nodes = if testChannel then { inherit webserver; } else { };
        testScript = testScriptFun {
          inherit createPartitions testChannel grubVersion grubDevice;
        };
      };
  
  