From ca2f64bcdaef5915f5147eac935ecb770511e438 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Fri, 15 May 2020 00:32:44 +0200
Subject: [PATCH] Reduce # of UIDs per build to 65536

2^18 was overkill. The idea was to enable multiple containers to run
inside a build. However, those containers can use the same UID range -
we don't really care about perfect isolation between containers inside
a build.
---
 src/libstore/globals.hh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libstore/globals.hh b/src/libstore/globals.hh
index 7dc842bca..89db072b0 100644
--- a/src/libstore/globals.hh
+++ b/src/libstore/globals.hh
@@ -149,7 +149,7 @@ public:
         "The Unix group that contains the build users."};
 
     #if __linux__
-    const uint32_t idsPerBuild = 1 << 18;
+    const uint32_t idsPerBuild = 1 << 16;
 
     Setting<uint32_t> startId{this, 872415232, "start-id",
         "The first UID and GID to use for dynamic ID allocation. (0 means disable.)"};