From a65930ca21b15feb290edf3f88d210f81c964322 Mon Sep 17 00:00:00 2001
From: Alyssa Ross <hi@alyssa.is>
Date: Tue, 15 Mar 2022 11:27:37 +0000
Subject: [PATCH] nixos/locate: disable default findutils pruneNames

It doesn't make sense to have a default value for this that's
incompatible with the default locate implementation.  It means that
just doing services.locate.enable = true; generates a warning, even if
you don't care about pruning anything.  So only use the default prune
list if the locate implementation supports it (i.e., isn't findutils).
---
 nixos/modules/misc/locate.nix | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/nixos/modules/misc/locate.nix b/nixos/modules/misc/locate.nix
index 66a49b0b888f..204a89143008 100644
--- a/nixos/modules/misc/locate.nix
+++ b/nixos/modules/misc/locate.nix
@@ -183,7 +183,11 @@ in
 
     pruneNames = mkOption {
       type = listOf str;
-      default = [ ".bzr" ".cache" ".git" ".hg" ".svn" ];
+      default = lib.optionals (!isFindutils) [ ".bzr" ".cache" ".git" ".hg" ".svn" ];
+      defaultText = literalDocBook ''
+        <literal>[ ".bzr" ".cache" ".git" ".hg" ".svn" ]</literal>, if
+        supported by the locate implementation (i.e. mlocate or plocate).
+      '';
       description = ''
         Directory components which should exclude paths containing them from indexing
       '';