From b30d1e7ada0a8fbaacc25e24e5e788d18bfe8d3c Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Thu, 8 Dec 2016 21:38:58 +0100
Subject: Don't delete .check directories of running builds

We need to keep them around for diffoscope.
---
 src/libstore/gc.cc | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/libstore/gc.cc')

diff --git a/src/libstore/gc.cc b/src/libstore/gc.cc
index ae03604faf98..f8c4a07238c7 100644
--- a/src/libstore/gc.cc
+++ b/src/libstore/gc.cc
@@ -621,6 +621,11 @@ void LocalStore::tryToDelete(GCState & state, const Path & path)
         /* Don't delete .chroot directories for derivations that are
            currently being built. */
         if (isActiveTempFile(state, path, ".chroot")) return;
+
+        /* Don't delete .check directories for derivations that are
+           currently being built, because we may need to run
+           diff-hook. */
+        if (isActiveTempFile(state, path, ".check")) return;
     }
 
     PathSet visited;
-- 
cgit 1.4.1