luks-interactive-login: don't use passwordFile

Author: Enzime

example/luks-btrfs-subvolumes.nix

@@ -25,7 +25,7 @@
                 type = "luks";
                 name = "crypted";
                 # disable settings.keyFile if you want to use interactive password entry
-                #passwordFile = "/tmp/secret.key"; # Interactive
+                # passwordFile = "/tmp/secret.key"; # Interactive
                 settings = {
                   allowDiscards = true;
                   keyFile = "/tmp/secret.key";

example/luks-interactive-login.nix

@@ -22,7 +22,6 @@
                 type = "luks";
                 name = "crypted";
                 settings.allowDiscards = true;
-                passwordFile = "/tmp/secret.key";
                 content = {
                   type = "filesystem";
                   format = "ext4";
@@ -35,4 +34,11 @@
       };
     };
   };
+
+  # If we don't set passwordFile above, we will be interactively prompted by the
+  # disko script to set the LUKS password. However, as passwordFile is necessary
+  # for installTest we set it here.
+  disko.tests.extraDiskoConfig = {
+    devices.disk.vdb.content.partitions.luks.content.passwordFile = "/tmp/secret.key";
+  };
 }

tests/luks-interactive-login.nix

@@ -1,15 +1,18 @@
 { pkgs ? import <nixpkgs> { }
 , diskoLib ? pkgs.callPackage ../lib { }
 }:
-diskoLib.testLib.makeDiskoTest {
+diskoLib.testLib.makeDiskoTest (let
+  disko-config = import ../example/luks-interactive-login.nix;
+in {
   inherit pkgs;
   name = "luks-interactive-login";
-  disko-config = ../example/luks-interactive-login.nix;
+  inherit disko-config;
+  inherit (disko-config.disko.tests) extraDiskoConfig;
   extraTestScript = ''
     machine.succeed("cryptsetup isLuks /dev/vda2");
   '';
   bootCommands = ''
     machine.wait_for_console_text("vda")
     machine.send_console("secretsecret\n")
   '';
-}
+})