From 75f706aca1739202e6e1d05d269f7838f8462d21 Mon Sep 17 00:00:00 2001
From: Patryk Niedźwiedziński <pniedzwiedzinski19@gmail.com>
Date: Tue, 16 Mar 2021 09:49:38 +0100
Subject: Fix boolean

---
 pkgs/larbs/dwmblocks/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/pkgs/larbs/dwmblocks/default.nix b/pkgs/larbs/dwmblocks/default.nix
index 3277cc0..2718b6d 100644
--- a/pkgs/larbs/dwmblocks/default.nix
+++ b/pkgs/larbs/dwmblocks/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchgit, libX11, config_h ? null, patches ? [] }:
+{ stdenv, lib, fetchgit, libX11, config_h ? null, patches ? [] }:
 
 with stdenv.lib;
 
@@ -16,7 +16,7 @@ stdenv.mkDerivation rec {
   buildInputs = [ libX11 ];
 
   prePatch = ''
-    ${stdenv.lib.optionalString (config_h) "cp ${config_h} config.h"}
+    ${lib.optionalString (config_h != null) "cp ${config_h} config.h"}
   '';
 
   installPhase = ''
-- 
cgit 1.4.1