···

       
98
       
 
       
    nix.settings.nix-path = mkIf (! cfg.channel.enable) (mkDefault "");

     

       
99
       
 
       


     

       
100
       
 
       
    systemd.tmpfiles.rules = lib.mkIf cfg.channel.enable [

     

       
101
       
-
       
      "f /root/.nix-channels -"

     

       
102
       
-
       
      ''w+ "/root/.nix-channels" - - - - ${config.system.defaultChannel} nixos\n''

     

       
103
       
 
       
    ];

     

       
104
       
 
       
  };

     

       
105
       
 
       
}

     

···

       
98
       
 
       
    nix.settings.nix-path = mkIf (! cfg.channel.enable) (mkDefault "");

     

       
99
       
 
       


     

       
100
       
 
       
    systemd.tmpfiles.rules = lib.mkIf cfg.channel.enable [

     

       
101
       
+
       
      ''f /root/.nix-channels - - - - ${config.system.defaultChannel} nixos\n''

     

       
0
       
 
       

     

       
102
       
 
       
    ];

     

       
103
       
 
       
  };

     

       
104
       
 
       
}

     

···

       
11
       
 
       
  };

     

       
12
       
 
       


     

       
13
       
 
       
  testScript = { nodes, ... }: ''

     

       
0
       
 
       

     

       
0
       
 
       

     

       
14
       
 
       
    assert machine.succeed("cat /root/.nix-channels") == "${nodes.machine.system.defaultChannel} nixos\n"

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
0
       
 
       

     

       
15
       
 
       
  '';

     

       
16
       
 
       


     

       
17
       
 
       
}

     

···

       
11
       
 
       
  };

     

       
12
       
 
       


     

       
13
       
 
       
  testScript = { nodes, ... }: ''

     

       
14
       
+
       
    machine.start(allow_reboot=True)

     

       
15
       
+
       


     

       
16
       
 
       
    assert machine.succeed("cat /root/.nix-channels") == "${nodes.machine.system.defaultChannel} nixos\n"

     

       
17
       
+
       


     

       
18
       
+
       
    nixpkgs_unstable_channel = "https://nixos.org/channels/nixpkgs-unstable nixpkgs"

     

       
19
       
+
       
    machine.succeed(f"echo '{nixpkgs_unstable_channel}' > /root/.nix-channels")

     

       
20
       
+
       


     

       
21
       
+
       
    machine.reboot()

     

       
22
       
+
       


     

       
23
       
+
       
    assert machine.succeed("cat /root/.nix-channels") == f"{nixpkgs_unstable_channel}\n"

     

       
24
       
 
       
  '';

     

       
25
       
 
       


     

       
26
       
 
       
}