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-rw-r--r--pre-inst-env.in3
1 files changed, 2 insertions, 1 deletions
diff --git a/pre-inst-env.in b/pre-inst-env.in
index 4e079c8d41..5e7758cd7c 100644
--- a/pre-inst-env.in
+++ b/pre-inst-env.in
@@ -35,8 +35,9 @@ export PATH
 # Daemon helpers.
 
 NIX_ROOT_FINDER="@abs_top_builddir@/nix/scripts/list-runtime-roots"
+NIX_SUBSTITUTERS="@abs_top_builddir@/nix/scripts/substitute-binary"
 NIX_SETUID_HELPER="@abs_top_builddir@/nix-setuid-helper"
-export NIX_ROOT_FINDER NIX_SETUID_HELPER
+export NIX_ROOT_FINDER NIX_SETUID_HELPER NIX_SUBSTITUTERS
 
 # The following variables need only be defined when compiling Guix
 # modules, but we define them to be on the safe side in case of