Niklas Haas authored
This fixes the CI/licensing issues introduced by 68375667 without regressing #67. We will now link against SPIRV-Tools where we can, and won't otherwise. Apparently glslang can sometimes depend on SPIRV-Tools and sometimes not... A better solution for this might still be needed to avoid licensing issues. But for now, I don't particularly care, especially since we don't actually use any code from SPIRV-Tools so in theory the license shouldn't matter.