···

       
27
       
27
       
 
       


     

       
28
       
28
       
 
       
      # Containers don't have their own kernel or initrd.  They boot

     

       
29
       
29
       
 
       
      # directly into stage 2.

     

       
30
       
30
       
-
       
      ${optionalString (!config.boot.isContainer) ''

     

       
30
       
30
       
+
       
      ${optionalString config.boot.kernel.enable ''

     

       
31
       
31
       
 
       
        if [ ! -f ${kernelPath} ]; then

     

       
32
       
32
       
 
       
          echo "The bootloader cannot find the proper kernel image."

     

       
33
       
33
       
 
       
          echo "(Expecting ${kernelPath})"

     

···

       
20
       
20
       
 
       
  ###### interface

     

       
21
       
21
       
 
       


     

       
22
       
22
       
 
       
  options = {

     

       
23
       
23
       
+
       
    boot.kernel.enable = mkEnableOption (lib.mdDoc "the Linux kernel. This is useful for systemd-like containers which do not require a kernel.") // {

     

       
24
       
24
       
+
       
      default = true;

     

       
25
       
25
       
+
       
    };

     

       
23
       
26
       
 
       


     

       
24
       
27
       
 
       
    boot.kernel.features = mkOption {

     

       
25
       
28
       
 
       
      default = {};

     
···

       
258
       
261
       
 
       
          ];

     

       
259
       
262
       
 
       
      })

     

       
260
       
263
       
 
       


     

       
261
       
261
       
-
       
      (mkIf (!config.boot.isContainer) {

     

       
264
       
264
       
+
       
      (mkIf config.boot.kernel.enable {

     

       
262
       
265
       
 
       
        system.build = { inherit kernel; };

     

       
263
       
266
       
 
       


     

       
264
       
267
       
 
       
        system.modulesTree = [ kernel ] ++ config.boot.extraModulePackages;

     

···

       
7
       
7
       
 
       
  config = mkIf config.boot.isContainer {

     

       
8
       
8
       
 
       


     

       
9
       
9
       
 
       
    # Disable some features that are not useful in a container.

     

       
10
       
10
       
+
       
    boot.kernel.enable = false;

     

       
11
       
11
       
+
       


     

       
10
       
12
       
 
       
    nix.optimise.automatic = mkDefault false; # the store is host managed

     

       
11
       
13
       
 
       
    powerManagement.enable = mkDefault false;

     

       
12
       
14
       
 
       
    documentation.nixos.enable = mkDefault false;