treewide: set defaultText for options using simple path defaults

adds defaultText for all options that set their default to a path expression
using the ubiquitous `cfg` shortcut bindings.

1 files changed, 4 insertions, 2 deletions

diff --git a/nixos/modules/security/dhparams.nix b/nixos/modules/security/dhparams.nix
index 012be2887d898..cfa9003f12fb6 100644
--- a/nixos/modules/security/dhparams.nix
+++ b/nixos/modules/security/dhparams.nix
@@ -1,8 +1,9 @@
-{ config, lib, pkgs, ... }:
+{ config, lib, options, pkgs, ... }:
 
 let
-  inherit (lib) mkOption types;
+  inherit (lib) literalExpression mkOption types;
   cfg = config.security.dhparams;
+  opt = options.security.dhparams;
 
   bitType = types.addCheck types.int (b: b >= 16) // {
     name = "bits";
@@ -13,6 +14,7 @@ let
     options.bits = mkOption {
       type = bitType;
       default = cfg.defaultBitSize;
+      defaultText = literalExpression "config.${opt.defaultBitSize}";
       description = ''
         The bit size for the prime that is used during a Diffie-Hellman
         key exchange.