From cca835ae37cc35f3cae80afe5af8049009a6aa89 Mon Sep 17 00:00:00 2001
From: Vincent Ambo <tazjin@google.com>
Date: Fri, 11 Oct 2019 13:55:10 +0100
Subject: fix(build): Only take the first matching hash for source hashing

Some Nix download mechanisms will add a second hash in the store path,
which had been added to the source hash output (breaking argument
interpolation).
---
 tools/nixery/default.nix | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'tools/nixery/default.nix')

diff --git a/tools/nixery/default.nix b/tools/nixery/default.nix
index 20a5b50220e1..422148d62615 100644
--- a/tools/nixery/default.nix
+++ b/tools/nixery/default.nix
@@ -23,7 +23,7 @@ rec {
   # builds to distinguish errors between deployed versions, see
   # server/logs.go for details.
   nixery-src-hash = pkgs.runCommand "nixery-src-hash" {} ''
-    echo ${./.} | grep -Eo '[a-z0-9]{32}' > $out
+    echo ${./.} | grep -Eo '[a-z0-9]{32}' | head -c 32 > $out
   '';
 
   # Go implementation of the Nixery server which implements the
-- 
cgit 1.4.1