From 36de745e1b705644d22b0d7f8fc60fdedb49d2d3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20=C4=8Cun=C3=A1t?= <vcunat@gmail.com>
Date: Sun, 19 Mar 2017 10:16:44 +0100
Subject: [PATCH] readPathsFromFile: fixup after #23851

The final newline would produce an empty string;
let's filter all empty lines as well.
---
 lib/strings.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/strings.nix b/lib/strings.nix
index eb3c2971ad59..44b6f8780c84 100644
--- a/lib/strings.nix
+++ b/lib/strings.nix
@@ -479,7 +479,7 @@ rec {
       lines =
         builtins.map (lib.removeSuffix "\n")
         (lib.splitString "\n" (builtins.readFile file));
-      removeComments = lib.filter (line: !(lib.hasPrefix "#" line));
+      removeComments = lib.filter (line: line != "" && !(lib.hasPrefix "#" line));
       relativePaths = removeComments lines;
       absolutePaths = builtins.map (path: builtins.toPath (root + "/" + path)) relativePaths;
     in