mesa: fix building with llvm

Use glslang's bin output in nativeBuildInputs to prevent propagating the "dev" output which
then injects the glslang libraries for host into target. Switch to using
the spirv-tools package for buildInputs instead of glslang to further
prevent the wrong things from propagating on host since we only need the
pkg-config and static libraries.

pkgs/development/libraries/mesa/default.nix

@@ -10,6 +10,7 @@
 , file
 , flex
 , glslang
+, spirv-tools
 , intltool
 , jdupes
 , libdrm
@@ -226,7 +227,7 @@ in stdenv.mkDerivation {
     directx-headers
     elfutils
     expat
-    glslang
+    spirv-tools
     libglvnd
     libomxil-bellagio
     libunwind
@@ -275,7 +276,9 @@ in stdenv.mkDerivation {
     python3Packages.mako
     python3Packages.ply
     jdupes
-    glslang
+    # Use bin output from glslang to not propagate the dev output at
+    # the build time with the host glslang.
+    (lib.getBin glslang)
     rustc
     rust-bindgen
     rust-cbindgen