From 152e3cda0c3e2309b37593b06f9e113ec44f506a Mon Sep 17 00:00:00 2001
From: Tom Bereknyei <tomberek@gmail.com>
Date: Fri, 26 Nov 2021 10:55:43 -0500
Subject: [PATCH] reproducibility: determinstic man page output for cores

---
 doc/manual/local.mk | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/doc/manual/local.mk b/doc/manual/local.mk
index e43d9f2fb..6b232a736 100644
--- a/doc/manual/local.mk
+++ b/doc/manual/local.mk
@@ -12,11 +12,13 @@ man-pages := $(foreach n, \
 clean-files += $(d)/*.1 $(d)/*.5 $(d)/*.8
 
 # Provide a dummy environment for nix, so that it will not access files outside the macOS sandbox.
+# Set cores to 0 because otherwise nix show-config resolves the cores based on the current machine
 dummy-env = env -i \
 	HOME=/dummy \
 	NIX_CONF_DIR=/dummy \
 	NIX_SSL_CERT_FILE=/dummy/no-ca-bundle.crt \
-	NIX_STATE_DIR=/dummy
+	NIX_STATE_DIR=/dummy \
+	NIX_CONFIG='cores = 0'
 
 nix-eval = $(dummy-env) $(bindir)/nix eval --experimental-features nix-command -I nix/corepkgs=corepkgs --store dummy:// --impure --raw