post-build-hook: cachix: HOME: getXdgDirectory:getHomeDirectory:getEnv: does not exist (no environment variable)
error: program '/nix/store/6zjkn6mkp00hazfaqlxq3ypv1qyqsi56-upload-to-cachix' failed with exit code 1

extraOptions = "post-build-hook = ${pkgs.writeShellScript "upload-to-cachix" "echo $OUT_PATHS | ${pkgs.cachix}/bin/cachix --config /root/.config/cachix/cachix.dhall silence"}";

extraOptions = "post-build-hook = ${pkgs.writeShellScript "upload-to-cachix" ''
    export HOME=/root
    echo $OUT_PATHS | ${pkgs.cachix}/bin/cachix --config /root/.config/cachix/cachix.dhall silence
''}";