From b07e3705f2ed8221d2b7147088aa8a90a8a53343 Mon Sep 17 00:00:00 2001
From: Randy Eckenrode <randy@largeandhighquality.com>
Date: Tue, 15 Feb 2022 20:38:06 -0500
Subject: [PATCH] moltenvk: add MoltenVK_icd.json to output

---
 pkgs/os-specific/darwin/moltenvk/default.nix | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/pkgs/os-specific/darwin/moltenvk/default.nix b/pkgs/os-specific/darwin/moltenvk/default.nix
index b77bba75e816..243bc657c9bc 100644
--- a/pkgs/os-specific/darwin/moltenvk/default.nix
+++ b/pkgs/os-specific/darwin/moltenvk/default.nix
@@ -172,12 +172,15 @@ stdenvNoCC.mkDerivation rec {
   '';
 
   installPhase = ''
-    mkdir -p "$out/lib" "$bin/bin"
+    mkdir -p "$out/lib" "$out/share/vulkan/icd.d" "$bin/bin"
     cp outputs/bin/MoltenVKShaderConverter "$bin/bin/"
     cp outputs/lib/libMoltenVK.dylib "$out/lib/"
     ${cctools}/bin/install_name_tool -id "$out/lib/libMoltenVK.dylib" "$out/lib/libMoltenVK.dylib"
     # FIXME: https://github.com/NixOS/nixpkgs/issues/148189
     /usr/bin/codesign -s - -f "$out/lib/libMoltenVK.dylib"
+    install -m644 MoltenVK/icd/MoltenVK_icd.json "$out/share/vulkan/icd.d/MoltenVK_icd.json"
+    substituteInPlace $out/share/vulkan/icd.d/MoltenVK_icd.json \
+      --replace ./libMoltenVK.dylib "$out/share/vulkan/icd.d/MoltenVK_icd.json"
   '';
 
   sandboxProfile = ''