From 786f02f7a45621b9f628f63649ff92546aff83b7 Mon Sep 17 00:00:00 2001
From: Daniel Schaefer <git@danielschaefer.me>
Date: Wed, 24 Apr 2019 05:48:22 +0200
Subject: treewide: Remove usage of isNull

isNull "is deprecated; just write e == null instead" says the Nix manual
---
 pkgs/tools/security/b2sum/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'pkgs/tools/security')

diff --git a/pkgs/tools/security/b2sum/default.nix b/pkgs/tools/security/b2sum/default.nix
index f9d2855e739f..16811d8f8897 100644
--- a/pkgs/tools/security/b2sum/default.nix
+++ b/pkgs/tools/security/b2sum/default.nix
@@ -15,7 +15,7 @@ stdenv.mkDerivation rec {
 
   buildInputs = [ openmp ];
 
-  buildFlags = [ (optional (isNull openmp) "NO_OPENMP=1") ];
+  buildFlags = [ (optional (openmp == null) "NO_OPENMP=1") ];
   installFlags = [ "PREFIX=$(out)" ];
 
   meta = {
-- 
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