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V3D 4.2.14.0), but disabling forwarding instead reports zink from the guest. that seems to prove your lack of rpi drivers on rootFS theory.MESA_GL_VERSION_OVERRIDE with any value 4.6 or above seems to get these apps working- including half-life!ninja host-libs made me fear that was broken somehow...) this might need to be detailed on the wiki for newcomers (simply running ninja and ninja install again after setting up library builds)glxinfo will still fail with GLXBadFBConfig (opcode 149 on wayland, 152 on x11, if that helps). this is absolutely progress though, which i'm very pleased to see!