From 16f8a4b3e70f74941b8bc9bff707d7aa3c3dead2 Mon Sep 17 00:00:00 2001
From: Matt Huszagh <huszaghmatt@gmail.com>
Date: Mon, 3 Oct 2022 11:35:48 -0700
Subject: [PATCH] uhdm: add patch to fix darwin build

---
 pkgs/applications/science/logic/uhdm/default.nix | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/pkgs/applications/science/logic/uhdm/default.nix b/pkgs/applications/science/logic/uhdm/default.nix
index 30f7c2057933..47b9bb0d9423 100644
--- a/pkgs/applications/science/logic/uhdm/default.nix
+++ b/pkgs/applications/science/logic/uhdm/default.nix
@@ -33,6 +33,12 @@ stdenv.mkDerivation rec {
     rm -rf $out/lib/uhdm
   '';
 
+  prePatch = ''
+    substituteInPlace CMakeLists.txt --replace \
+    'capnp compile' \
+    'capnp compile --src-prefix=''${GENDIR}/..'
+  '';
+
   meta = {
     description = "Universal Hardware Data Model";
     homepage = "https://github.com/chipsalliance/UHDM";