From 6a8bc3fe558e82730801300a13328267308f857c Mon Sep 17 00:00:00 2001
From: Benjamin Saunders <ben.e.saunders@gmail.com>
Date: Thu, 8 Aug 2019 18:53:19 -0700
Subject: [PATCH] openxr-loader: init at 1.0.1

---
 .../libraries/openxr-loader/default.nix       | 40 +++++++++++++++++++
 pkgs/top-level/all-packages.nix               |  2 +
 2 files changed, 42 insertions(+)
 create mode 100644 pkgs/development/libraries/openxr-loader/default.nix

diff --git a/pkgs/development/libraries/openxr-loader/default.nix b/pkgs/development/libraries/openxr-loader/default.nix
new file mode 100644
index 000000000000..d1a20552ff76
--- /dev/null
+++ b/pkgs/development/libraries/openxr-loader/default.nix
@@ -0,0 +1,40 @@
+{ stdenv, fetchFromGitHub, cmake, python3, libX11, libXxf86vm, libXrandr }:
+
+stdenv.mkDerivation rec {
+  pname = "openxr-loader";
+  version = "1.0.1";
+
+  src = fetchFromGitHub {
+    owner = "KhronosGroup";
+    repo = "OpenXR-SDK-Source";
+    rev = "release-${version}";
+    sha256 = "1sif2w2vm793j6493364i6pp6s6yqi7fwa6iky5abzmzda51cg5q";
+  };
+
+  nativeBuildInputs = [ cmake python3 ];
+  buildInputs = [ libX11 libXxf86vm libXrandr ];
+  enableParallelBuilding = true;
+
+  cmakeFlags = [ "-DBUILD_TESTS=OFF" ];
+
+  outputs = [ "out" "dev" "layers" ];
+
+  postInstall = ''
+    mkdir -p "$layers/share"
+    mv "$out/share/openxr" "$layers/share"
+    # Use absolute paths in manifests so no LD_LIBRARY_PATH shenanigans are necessary
+    for file in "$layers/share/openxr/1/api_layers/explicit.d/"*; do
+        substituteInPlace "$file" --replace '"library_path": "lib' "\"library_path\": \"$layers/lib/lib"
+    done
+    mkdir -p "$layers/lib"
+    mv "$out/lib/libXrApiLayer"* "$layers/lib"
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Khronos OpenXR loader";
+    homepage    = https://www.khronos.org/openxr;
+    platforms   = platforms.linux;
+    license     = licenses.asl20;
+    maintainers = [ maintainers.ralith ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e5d3de1bf33d..6e700b617e73 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -14650,6 +14650,8 @@ in
 
   openxpki = callPackage ../servers/openxpki { };
 
+  openxr-loader = callPackage ../development/libraries/openxr-loader { };
+
   osrm-backend = callPackage ../servers/osrm-backend { };
 
   p910nd = callPackage ../servers/p910nd { };