these 2 derivations will be built:
  /nix/store/j0cj5l6qq91ipnzhmnz03mi0xdnnwi9k-python3-3.13.14-env.drv
  /nix/store/li7wkdd4zgvm9lr9x401y6j8jz53gx67-pytest-impure.drv
Failed to find a machine for remote build!
derivation: pk6c5959r9b3k5y0rqcx1wn73pa0aank-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/pk6c5959r9b3k5y0rqcx1wn73pa0aank-pytest-impure.drv'.
       Reason: platform mismatch
       Required system: 'aarch64-darwin'
       Current system: 'x86_64-linux'
error: build of resolved derivation '/nix/store/pk6c5959r9b3k5y0rqcx1wn73pa0aank-pytest-impure.drv' failed