The main reason for doing this is that it saves us the trouble of having to backport changes, e.g., a newer MacOS toolchain.
* Upgrade to nixpkgs 19.03 (#871) * Fix nix-build restart Without || true we will never get to the next line.
This reverts commit 3d8acde916. For some reason that commit seems to have resulted in a lot of "unexpected end of file" errors during cache downloads. I do not know what is going on here or how to fix it so let’s revert it for now.
3d8acde916
