From baa3b3effff51d9aea43ee524329f8bbcbdaf3ec Mon Sep 17 00:00:00 2001
From: Maximilian Bosch <maximilian@mbosch.me>
Date: Tue, 25 Apr 2017 16:00:20 +0200
Subject: [PATCH] programs.zsh.syntax-highlighting: refactor `highlighters`
 option for proper validation

Right now the `programs.zsh.syntax-highlighting.highlighters` option
lacks appropriate validation which can cause confusing things when
mistyping a higlighter for zsh-syntax-highlighting.
---
 .../modules/programs/zsh/zsh-syntax-highlighting.nix | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix b/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix
index 962c1f920a86..fde241ca3ce3 100644
--- a/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix
+++ b/nixos/modules/programs/zsh/zsh-syntax-highlighting.nix
@@ -18,7 +18,17 @@ in
 
         highlighters = mkOption {
           default = [ "main" ];
-          type = types.listOf(types.str);
+
+          # https://github.com/zsh-users/zsh-syntax-highlighting/blob/master/docs/highlighters.md
+          type = types.listOf(types.enum([
+            "main"
+            "brackets"
+            "pattern"
+            "cursor"
+            "root"
+            "line"
+          ]));
+
           description = ''
             Specifies the highlighters to be used by zsh-syntax-highlighting.