these 2 derivations will be built:
  /nix/store/211s7ah38rdq09psldk7s21g91lj7179-harmonia-deps-3.2.0.drv
  /nix/store/rg143dsw400zkn2j74plv7g372gndlrh-harmonia-llvm-cov-3.2.0.drv
Failed to find a machine for remote build!
derivation: rg143dsw400zkn2j74plv7g372gndlrh-harmonia-llvm-cov-3.2.0.drv
required (system, features): (aarch64-linux, [])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])