(In reply to Benjamin Hodgetts from comment #6)
> I haven't tried force_glsl_extensions_warn, but
> MESA_GL_VERSION_OVERRIDE=4.5COMPAT doesn't help. It worked on older versions
> of the game, but has no positive effect with the current version of the game
> (aka No Man's Sky NEXT).

The override used to be broken and actually caused you to get an OpenGL core
like profile. Since this is now fixed things will have changed, this is not a
regression.

Please try using force_glsl_extensions_warn=true it works around some game
bugs.