Move glslang and vulkan-validation-layers overrides out of all-packages

pkgs/development/tools/vulkan-validation-layers/default.nix

@@ -1,6 +1,51 @@
-{ stdenv, fetchFromGitHub, cmake, writeText, python3
-, vulkan-headers, vulkan-loader, glslang, spirv-headers
-, pkgconfig, xlibsWrapper, libxcb, libXrandr, wayland }:
+{ stdenv
+, fetchFromGitHub
+, cmake
+, writeText
+, python3
+, spirv-headers
+, spirv-tools
+, vulkan-headers
+, vulkan-loader
+, glslang
+, pkgconfig
+, xlibsWrapper
+, libxcb
+, libXrandr
+, wayland
+}:
+# vulkan-validation-layers requires a custom glslang version, while glslang requires
+# custom versions for spirv-tools and spirv-headers. The git hashes required for all
+# of these deps is documented upstream here:
+# https://github.com/KhronosGroup/Vulkan-ValidationLayers/blob/master/scripts/known_good.json
+
+let
+  localGlslang = (glslang.override {
+    argSpirv-tools = spirv-tools.overrideAttrs (_: {
+      src = fetchFromGitHub {
+        owner = "KhronosGroup";
+        repo = "SPIRV-Tools";
+        rev = "e128ab0d624ce7beb08eb9656bb260c597a46d0a";
+        sha256 = "0jj8zrl3dh9fq71jc8msx3f3ifb2vjcb37nl0w4sa8sdhfff74pv";
+      };
+    });
+    argSpirv-headers = spirv-headers.overrideAttrs (_: {
+      src = fetchFromGitHub {
+        owner = "KhronosGroup";
+        repo = "SPIRV-Headers";
+        rev = "ac638f1815425403e946d0ab78bac71d2bdbf3be";
+        sha256 = "1lkhs7pxcrfkmiizcxl0w5ajx6swwjv7w3iq586ipgh571fc75gx";
+      };
+    });
+  }).overrideAttrs (_: {
+    src = fetchFromGitHub {
+      owner = "KhronosGroup";
+      repo = "glslang";
+      rev = "e00d27c6d65b7d3e72506a311d7f053da4051295";
+      sha256 = "00lzvzk613gpm1vsdxffmx52z3c52ijwvzk4sfhh95p71kdydhgv";
+    };
+  });
+in
 
 stdenv.mkDerivation rec {
   pname = "vulkan-validation-layers";
@@ -20,8 +65,8 @@ stdenv.mkDerivation rec {
   ];
 
   buildInputs = [
-    glslang
-    spirv-headers
+    localGlslang
+    localGlslang.spirv-headers
     vulkan-headers
     vulkan-loader
     libxcb
@@ -32,7 +77,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   cmakeFlags = [
-    "-DGLSLANG_INSTALL_DIR=${glslang}"
+    "-DGLSLANG_INSTALL_DIR=${localGlslang}"
   ];
 
   # Help vulkan-loader find the validation layers