···

       
238
       
238
       
 
       
      # this should not run because /etc is mounted via a systemd mount unit

     

       
239
       
239
       
 
       
      # instead. To a large extent this mimics what composefs does. Because

     

       
240
       
240
       
 
       
      # it's relatively simple, however, we avoid the composefs dependency.

     

       
241
       
241
       
-
       
      if [[ ! $IN_NIXOS_SYSTEMD_STAGE1 ]]; then

     

       
241
       
241
       
+
       
      # Since this script is not idempotent, it should not run when etc hasn't

     

       
242
       
242
       
+
       
      # changed.

     

       
243
       
243
       
+
       
      if [[ ! $IN_NIXOS_SYSTEMD_STAGE1 ]] && [[ "${config.system.build.etc}/etc" != "$(readlink -f /run/current-system/etc)" ]]; then

     

       
242
       
244
       
 
       
        echo "remounting /etc..."

     

       
243
       
245
       
 
       


     

       
244
       
246
       
 
       
        tmpMetadataMount=$(mktemp --directory)

     

···

       
20
       
20
       
 
       
  };

     

       
21
       
21
       
 
       


     

       
22
       
22
       
 
       
  testScript = ''

     

       
23
       
23
       
-
       
    machine.succeed("findmnt --kernel --type overlay /etc")

     

       
24
       
24
       
-
       
    machine.fail("stat /etc/newgen")

     

       
23
       
23
       
+
       
    with subtest("/etc is mounted as an overlay"):

     

       
24
       
24
       
+
       
      machine.succeed("findmnt --kernel --type overlay /etc")

     

       
25
       
25
       
 
       


     

       
26
       
26
       
-
       
    machine.succeed("/run/current-system/specialisation/new-generation/bin/switch-to-configuration switch")

     

       
26
       
26
       
+
       
    with subtest("switching to the same generation"):

     

       
27
       
27
       
+
       
      machine.succeed("/run/current-system/bin/switch-to-configuration test")

     

       
27
       
28
       
 
       


     

       
28
       
28
       
-
       
    assert machine.succeed("cat /etc/newgen") == "newgen"

     

       
29
       
29
       
+
       
    with subtest("switching to a new generation"):

     

       
30
       
30
       
+
       
      machine.fail("stat /etc/newgen")

     

       
31
       
31
       
+
       


     

       
32
       
32
       
+
       
      machine.succeed("/run/current-system/specialisation/new-generation/bin/switch-to-configuration switch")

     

       
33
       
33
       
+
       


     

       
34
       
34
       
+
       
      assert machine.succeed("cat /etc/newgen") == "newgen"

     

       
29
       
35
       
 
       
  '';

     

       
30
       
36
       
 
       
}

     

···

       
18
       
18
       
 
       
  };

     

       
19
       
19
       
 
       


     

       
20
       
20
       
 
       
  testScript = ''

     

       
21
       
21
       
-
       
    machine.succeed("findmnt --kernel --type overlay /etc")

     

       
22
       
22
       
-
       
    machine.fail("stat /etc/newgen")

     

       
23
       
23
       
-
       
    machine.succeed("echo -n 'mutable' > /etc/mutable")

     

       
21
       
21
       
+
       
    with subtest("/etc is mounted as an overlay"):

     

       
22
       
22
       
+
       
      machine.succeed("findmnt --kernel --type overlay /etc")

     

       
24
       
23
       
 
       


     

       
25
       
25
       
-
       
    machine.succeed("/run/current-system/specialisation/new-generation/bin/switch-to-configuration switch")

     

       
24
       
24
       
+
       
    with subtest("switching to the same generation"):

     

       
25
       
25
       
+
       
      machine.succeed("/run/current-system/bin/switch-to-configuration test")

     

       
26
       
26
       
 
       


     

       
27
       
27
       
-
       
    assert machine.succeed("cat /etc/newgen") == "newgen"

     

       
28
       
28
       
-
       
    assert machine.succeed("cat /etc/mutable") == "mutable"

     

       
27
       
27
       
+
       
    with subtest("switching to a new generation"):

     

       
28
       
28
       
+
       
      machine.fail("stat /etc/newgen")

     

       
29
       
29
       
+
       
      machine.succeed("echo -n 'mutable' > /etc/mutable")

     

       
30
       
30
       
+
       


     

       
31
       
31
       
+
       
      machine.succeed("/run/current-system/specialisation/new-generation/bin/switch-to-configuration switch")

     

       
32
       
32
       
+
       


     

       
33
       
33
       
+
       
      assert machine.succeed("cat /etc/newgen") == "newgen"

     

       
34
       
34
       
+
       
      assert machine.succeed("cat /etc/mutable") == "mutable"

     

       
29
       
35
       
 
       
  '';

     

       
30
       
36
       
 
       
}