From a4a4639d9369115cada819a757f51614fc60e2c2 Mon Sep 17 00:00:00 2001
From: Ryan Gibb <ryan@gibbr.org>
Date: Fri, 23 Sep 2022 15:51:22 +0200
Subject: [PATCH] remove opam dependancy

if the `opam config subst` call fails, substitute the jobs variable with the number of physical cores in the machine
---
 src/dune | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/dune b/src/dune
index 61d33a6..3b776e0 100644
--- a/src/dune
+++ b/src/dune
@@ -23,8 +23,10 @@
      "%{ocaml-config:native_c_libraries}"))))
 
 (rule
- (targets build.sh)
+ (target build.sh)
  (deps build.sh.in)
  (mode fallback)
  (action
-  (run opam config subst "build.sh")))
+  (bash "opam config subst %{target} ||
+     (CORES=`grep '^core id' /proc/cpuinfo | sort -u| wc -l`;
+     sed \"s/\%{jobs}\%/$CORES/g\" %{target}.in > %{target})")))