From efad7bd47d3e2864ba2c28c2fd5ec0bd22dd9200 Mon Sep 17 00:00:00 2001
From: Thomas Tuegel <ttuegel@gmail.com>
Date: Sat, 27 Feb 2016 06:20:19 -0600
Subject: [PATCH] fcitx: show available engines in module description

---
 nixos/modules/i18n/inputMethod/fcitx.nix | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/nixos/modules/i18n/inputMethod/fcitx.nix b/nixos/modules/i18n/inputMethod/fcitx.nix
index f73554b3edd2..8e31743504f1 100644
--- a/nixos/modules/i18n/inputMethod/fcitx.nix
+++ b/nixos/modules/i18n/inputMethod/fcitx.nix
@@ -18,10 +18,14 @@ in
         type    = with types; listOf fcitxEngine;
         default = [];
         example = literalExample "with pkgs.fcitx-engines; [ mozc hangul ]";
-        description = ''
-          Enabled Fcitx engines.
-          Available engines can be found by running `nix-env "&lt;nixpkgs&gt;" . -qaP -A fcitx-engines`.
-        '';
+        description =
+          let
+            engines =
+              lib.concatStringsSep ", "
+              (map (name: "<literal>${name}</literal>")
+               (lib.attrNames pkgs.fcitx-engines));
+          in
+            "Enabled Fcitx engines. Available engines are: ${engines}.";
       };
     };