these 3 derivations will be built:
  /nix/store/c3z39qa2yvc2gfm4rb74kq7vnbl53g34-treefmt.toml.drv
  /nix/store/rcmzawh3yvv5wqhm0pps0c0qp59qd1nm-treefmt.drv
  /nix/store/48d26rfrv15kcbpgakh2p4ssddd4szq0-treefmt-check.drv
this path will be fetched (1.2 MiB download, 8.3 MiB unpacked):
  /nix/store/bd61knsrkvdwc0r0qmn1xxf29cha3mp1-prettier-3.8.3
building '/nix/store/c3z39qa2yvc2gfm4rb74kq7vnbl53g34-treefmt.toml.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/c3z39qa2yvc2gfm4rb74kq7vnbl53g34-treefmt.toml.drv'
treefmt.toml> structuredAttrs is enabled
building '/nix/store/rcmzawh3yvv5wqhm0pps0c0qp59qd1nm-treefmt.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/rcmzawh3yvv5wqhm0pps0c0qp59qd1nm-treefmt.drv'
building '/nix/store/48d26rfrv15kcbpgakh2p4ssddd4szq0-treefmt-check.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/48d26rfrv15kcbpgakh2p4ssddd4szq0-treefmt-check.drv'
treefmt-check> treefmt v2.5.0traversed 12 files
treefmt-check> emitted 8 files for processing
treefmt-check> formatted 8 files (0 changed) in 750ms

post-build step Upload coverage to codecov: ok
Skipping codecov: project=Mic92/fast-flake-update attr=checks.aarch64-darwin.treefmt