From c2514beaeaaeb87d48f0780e089758eb61d96629 Mon Sep 17 00:00:00 2001
From: Justin Bedo <cu@cua0.org>
Date: Mon, 21 Feb 2022 11:27:26 +1100
Subject: linkOutputs: ignore null values

---
 default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/default.nix b/default.nix
index 1d2bad3..73cccdd 100644
--- a/default.nix
+++ b/default.nix
@@ -101,7 +101,7 @@ let
                   linkOutputs x
                 else
                   abort "linkOutputs: unsupported type";
-              link = dst: src: ''
+              link = dst: src: lib.optionalString (src != null) ''
                 ln -s ${recurse src} $(perl -e 'print $ENV{"${dst}"}') ; ln -s ${recurse src} $out/${dst}
               '';
             in
-- 
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