these 2 derivations will be built:
  /nix/store/vmxmall0h8dly4sln8kb9bx61rh72wcm-python3-3.13.15-env.drv
  /nix/store/bq6amill0bd41jay37rmmp9kh0dgqvr3-pytest-impure.drv
Failed to find a machine for remote build!
derivation: wb6xjwc75dlj3rbnqa96g9i3gyf5frwr-pytest-impure.drv
required (system, features): (aarch64-darwin, [ca-derivations])
1 available machines:
(systems, maxjobs, supportedFeatures, mandatoryFeatures)
([aarch64-darwin, x86_64-darwin], 8, [big-parallel, recursive-nix], [])
error: Cannot build '/nix/store/wb6xjwc75dlj3rbnqa96g9i3gyf5frwr-pytest-impure.drv'.
       Reason: platform mismatch
       Required system: 'aarch64-darwin'
       Current system: 'x86_64-linux'
error: build of resolved derivation '/nix/store/wb6xjwc75dlj3rbnqa96g9i3gyf5frwr-pytest-impure.drv' failed