From 072302cf6b614f1bf815728bd5305c49822cd24b Mon Sep 17 00:00:00 2001
From: qbisi <qbisicwate@gmail.com>
Date: Tue, 15 Apr 2025 15:33:12 +0800
Subject: [PATCH] pocl: add setupHook to specifies directory to scan for ICDs

Adds a setup hook that sets the OCL_ICD_VENDORS environment variable
to point to a directory containing ICD (Installable Client Driver) files.

These files define the available OpenCL backends, allowing other OpenCL
applications to detect and use the appropriate drivers in sandbox environment.
---
 pkgs/by-name/po/pocl/package.nix   | 2 ++
 pkgs/by-name/po/pocl/setup-hook.sh | 6 ++++++
 2 files changed, 8 insertions(+)
 create mode 100644 pkgs/by-name/po/pocl/setup-hook.sh

diff --git a/pkgs/by-name/po/pocl/package.nix b/pkgs/by-name/po/pocl/package.nix
index ff5e71d99904..9f363a9de504 100644
--- a/pkgs/by-name/po/pocl/package.nix
+++ b/pkgs/by-name/po/pocl/package.nix
@@ -80,6 +80,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   passthru.updateScript = nix-update-script { };
 
+  setupHook = ./setup-hook.sh;
+
   meta = {
     description = "A portable open source (MIT-licensed) implementation of the OpenCL standard";
     homepage = "http://portablecl.org";
diff --git a/pkgs/by-name/po/pocl/setup-hook.sh b/pkgs/by-name/po/pocl/setup-hook.sh
new file mode 100644
index 000000000000..986297516b75
--- /dev/null
+++ b/pkgs/by-name/po/pocl/setup-hook.sh
@@ -0,0 +1,6 @@
+preCheckHooks+=('setupPoclCheck')
+preInstallCheckHooks+=('setupPoclCheck')
+
+setupPoclCheck () {
+  export OCL_ICD_VENDORS="@out@/etc/OpenCL/vendors"
+}