···

       
7
       
7
       
 
       
  system.activationScripts.diff = {

     

       
8
       
8
       
 
       
    supportsDryActivation = true;

     

       
9
       
9
       
 
       
    text = ''

     

       
10
       
10
       
-
       
      ${lib.getExe pkgs.nvd} --color always --nix-bin-dir=${pkgs.nix}/bin diff /run/current-system "$systemConfig"

     

       
10
       
10
       
+
       
      if [[ -e /run/current-system ]]; then

     

       
11
       
11
       
+
       
        ${lib.getExe pkgs.nvd} --color always --nix-bin-dir=${pkgs.nix}/bin diff /run/current-system "$systemConfig"

     

       
12
       
12
       
+
       
      else

     

       
13
       
13
       
+
       
        echo "Couldn't find /run/current-system. Are we booting? Exiting gracefully."

     

       
14
       
14
       
+
       
     fi

     

       
11
       
15
       
 
       
    '';

     

       
12
       
16
       
 
       
  };

     

       
13
       
17
       
 
       
}