amdvlk: add nixos test

pkgs/development/libraries/amdvlk/default.nix

@@ -1,4 +1,5 @@
 { stdenv
+, callPackage
 , lib
 , fetchRepoProject
 , writeScript
@@ -102,6 +103,8 @@ in stdenv.mkDerivation rec {
     setHash "$hash"
   '';
 
+  passthru.impureTests = { amdvlk = callPackage ./test.nix {}; };
+
   meta = with lib; {
     description = "AMD Open Source Driver For Vulkan";
     homepage = "https://github.com/GPUOpen-Drivers/AMDVLK";

pkgs/development/libraries/amdvlk/test.nix

@@ -0,0 +1,49 @@
+{ lib, makeImpureTest, coreutils, amdvlk, vulkan-tools }:
+makeImpureTest {
+  name = "amdvlk";
+  testedPackage = "amdvlk";
+
+  sandboxPaths = [ "/sys" "/dev/dri" ];
+
+  nativeBuildInputs = [ vulkan-tools ];
+
+  VK_ICD_FILENAMES = "${amdvlk}/share/vulkan/icd.d/amd_icd64.json";
+  XDG_RUNTIME_DIR = "/tmp";
+
+  # AMDVLK needs access to /dev/dri/card0 (or another card), but normally it is rw-rw----
+  # Change the permissions to be rw for everyone
+  prepareRunCommands = ''
+    function reset_perms()
+    {
+      # Reset permissions to previous state
+      for card in /dev/dri/card*; do
+        sudo ${coreutils}/bin/chmod "0''${cardPerms[$card]}" $card
+      done
+    }
+
+    # Save permissions on /dev/dri/card*
+    declare -A cardPerms
+    for card in /dev/dri/card*; do
+      cardPerms[$card]=$(stat -c "%a" $card)
+    done
+
+    sudo ${coreutils}/bin/chmod o+rw /dev/dri/card*
+    trap reset_perms EXIT
+  '';
+
+  testScript = ''
+    # Check that there is at least one card with write-access
+    if ! ls -l /dev/dri/card* | cut -b8-9 | grep -q rw; then
+      echo 'AMDVLK needs rw access to /dev/dri/card0 or a fitting card, please run `sudo chmod o+rw /dev/dri/card*`'
+      exit 1
+    fi
+
+    vulkaninfo --summary
+    echo "Checking version"
+    vulkaninfo --summary | grep '= ${amdvlk.version}'
+  '';
+
+  meta = with lib.maintainers; {
+    maintainers = [ Flakebi ];
+  };
+}