···

       
2
       
2
       
 
       


     

       
3
       
3
       
 
       
rec {

     

       
4
       
4
       
 
       


     

       
5
       
5
       
+
       
  # Check whenever fileSystem is needed for boot

     

       
6
       
6
       
+
       
  fsNeededForBoot = fs: fs.neededForBoot

     

       
7
       
7
       
+
       
                     || elem fs.mountPoint [ "/" "/nix" "/nix/store" "/var" "/var/log" "/var/lib" "/etc" ];

     

       
8
       
8
       
+
       


     

       
5
       
9
       
 
       
  # Check whenever `b` depends on `a` as a fileSystem

     

       
6
       
10
       
 
       
  # FIXME: it's incorrect to simply use hasPrefix here: "/dev/a" is not a parent of "/dev/ab"

     

       
7
       
11
       
 
       
  fsBefore = a: b: ((any (x: elem x [ "bind" "move" ]) b.options) && (a.mountPoint == b.device))

     

···

       
26
       
26
       
 
       
  # The initrd only has to mount `/` or any FS marked as necessary for

     

       
27
       
27
       
 
       
  # booting (such as the FS containing `/nix/store`, or an FS needed for

     

       
28
       
28
       
 
       
  # mounting `/`, like `/` on a loopback).

     

       
29
       
29
       
-
       
  fileSystems = filter

     

       
30
       
30
       
-
       
    (fs: fs.neededForBoot || elem fs.mountPoint [ "/" "/nix" "/nix/store" "/var" "/var/log" "/var/lib" "/etc" ])

     

       
31
       
31
       
-
       
    config.system.build.fileSystems;

     

       
29
       
29
       
+
       
  fileSystems = filter utils.fsNeededForBoot config.system.build.fileSystems;

     

       
32
       
30
       
 
       


     

       
33
       
31
       
 
       


     

       
34
       
32
       
 
       
  # Some additional utilities needed in stage 1, like mount, lvm, fsck

     

···

       
38
       
38
       
 
       


     

       
39
       
39
       
 
       
  zfsFilesystems = filter (x: x.fsType == "zfs") config.system.build.fileSystems;

     

       
40
       
40
       
 
       


     

       
41
       
41
       
-
       
  isRoot = fs: fs.neededForBoot || elem fs.mountPoint [ "/" "/nix" "/nix/store" "/var" "/var/log" "/var/lib" "/etc" ];

     

       
42
       
42
       
-
       


     

       
43
       
41
       
 
       
  allPools = unique ((map fsToPool zfsFilesystems) ++ cfgZfs.extraPools);

     

       
44
       
42
       
 
       


     

       
45
       
45
       
-
       
  rootPools = unique (map fsToPool (filter isRoot zfsFilesystems));

     

       
43
       
43
       
+
       
  rootPools = unique (map fsToPool (filter fsNeededForBoot zfsFilesystems));

     

       
46
       
44
       
 
       


     

       
47
       
45
       
 
       
  dataPools = unique (filter (pool: !(elem pool rootPools)) allPools);

     

       
48
       
46