<p>Sorry to revive the merged thread, but what is the state on this?</p>
<p>I just built the macOS 64bit Pharo Cog VM on HighSierra, Metal seems to be enabled (<code>-DUSE_METAL=1</code>), and the VM runs my image. But downloading a fresh VM from Pharo downloads gives me <code>2019-03-27 11:48:46.282 Pharo[1041:7933912] Pipeline state creation error: Function screenQuadFragmentShader is using language version 2.1 which is incompatible with this OS.</code> again.</p>
<p>My current hypothesis is, that the downloaded VM is built on a newer macOS, which removes the compatibility for High Sierra. Anybody knows how this happens and how we could trick a newer macOS in building a VM with a High Sierra compatibility?</p>
<p>The only thing I found to control compatibility is the <code>-mmacosx-version-min</code>, which is <code>10.7</code> in my local build. It looks like there is nothing other than this flag to achieve compatibility, see also <a href="https://github.com/gfx-rs/gfx/blob/master/src/backend/metal/build.rs">https://github.com/gfx-rs/gfx/blob/master/src/backend/metal/build.rs</a>.</p>

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