From 713850fcb43db829baaeb3889d44006b1c028eec Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jakub=20Soko=C5=82owski?= <jakub@status.im>
Date: Fri, 13 Dec 2019 12:54:28 +0100
Subject: [PATCH] fix failure due to superfluous slashes in path
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Signed-off-by: Jakub Sokołowski <jakub@status.im>
---
 nix/tools/mkFilter.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/nix/tools/mkFilter.nix b/nix/tools/mkFilter.nix
index de71ffff1e..19dd1021ee 100644
--- a/nix/tools/mkFilter.nix
+++ b/nix/tools/mkFilter.nix
@@ -24,11 +24,13 @@ let
     root }:
     let
       allPathRootsAllowed = (length dirRootsToInclude) == 0;
+      # this removes superfluous slashes from the path
+      cleanRoot = "${toString (/. + root)}/";
     in
       path: type:
       let
         baseName = baseNameOf (toString path);
-        subpath = elemAt (splitString "${toString root}/" path) 1;
+        subpath = elemAt (splitString cleanRoot path) 1;
         spdir = elemAt (splitString "/" subpath) 0;
 
       in lib.cleanSourceFilter path type && (