From 8419dfd39d678afd5bc40df48f21fcaad8fc1332 Mon Sep 17 00:00:00 2001
From: linj <linj.dev@outlook.com>
Date: Sun, 29 May 2022 13:08:21 +0800
Subject: [PATCH] fish: enable manpage completion

This patch follows a similar patch[1] in nixpkgs. With this patch,
fish can complete manpages for programs installed through
home-manager, e.g., using home.packages.

[1]: https://github.com/NixOS/nixpkgs/pull/91794
---
 modules/programs/fish.nix | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/modules/programs/fish.nix b/modules/programs/fish.nix
index 1fbb9e071..7eda6eb6b 100644
--- a/modules/programs/fish.nix
+++ b/modules/programs/fish.nix
@@ -285,6 +285,9 @@ in {
     {
       home.packages = [ cfg.package ];
 
+      # Support completion for `man` by building a cache for `apropos`.
+      programs.man.generateCaches = mkDefault true;
+
       xdg.dataFile."fish/home-manager_generated_completions".source = let
         # paths later in the list will overwrite those already linked
         destructiveSymlinkJoin = args_@{ name, paths, preferLocalBuild ? true