this derivation will be built:
  /nix/store/a0av144r968nsffggwsqb2il7y6rb8gz-treefmt-check.drv
building '/nix/store/a0av144r968nsffggwsqb2il7y6rb8gz-treefmt-check.drv' on 'ssh-ng://customer@mac02'
building '/nix/store/a0av144r968nsffggwsqb2il7y6rb8gz-treefmt-check.drv'
treefmt-check> treefmt v2.4.0ERRO formatter | mypy-: failed to apply with options '[-eucx 
treefmt-check> export PYTHONPATH=""
treefmt-check> /nix/store/casvh3ypwg18ghzj2n7mzij9zbbs6nmk-python3.13-mypy-1.17.1/bin/mypy  ''
treefmt-check> ]': exit status 1
treefmt-check> 
treefmt-check> + export PYTHONPATH=
treefmt-check> + PYTHONPATH=
treefmt-check> + /nix/store/casvh3ypwg18ghzj2n7mzij9zbbs6nmk-python3.13-mypy-1.17.1/bin/mypy ''
treefmt-check> strace_macos/tracer.py:626: error: Item "int" of "Union[Any, int]" has no attribute "Dereference"  [union-attr]
treefmt-check> Found 1 error in 1 file (checked 86 source files)
treefmt-check> 
treefmt-check> traversed 117 files
treefmt-check> emitted 89 files for processing
treefmt-check> formatted 2 files (1 changed) in 27.162s
treefmt-check> Error: failed to finalise formatting: formatting failures detected
error: build of '/nix/store/a0av144r968nsffggwsqb2il7y6rb8gz-treefmt-check.drv' on 'ssh-ng://customer@mac02' failed: Cannot build '/nix/store/a0av144r968nsffggwsqb2il7y6rb8gz-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/gasvqzp1f8x9338aljwzxhx7wrl33r0v-treefmt-check
       Last 15 log lines:
       > treefmt v2.4.0ERRO formatter | mypy-: failed to apply with options '[-eucx
       > export PYTHONPATH=""
       > /nix/store/casvh3ypwg18ghzj2n7mzij9zbbs6nmk-python3.13-mypy-1.17.1/bin/mypy  ''
       > ]': exit status 1
       >
       > + export PYTHONPATH=
       > + PYTHONPATH=
       > + /nix/store/casvh3ypwg18ghzj2n7mzij9zbbs6nmk-python3.13-mypy-1.17.1/bin/mypy ''
       > strace_macos/tracer.py:626: error: Item "int" of "Union[Any, int]" has no attribute "Dereference"  [union-attr]
       > Found 1 error in 1 file (checked 86 source files)
       >
       > traversed 117 files
       > emitted 89 files for processing
       > formatted 2 files (1 changed) in 27.162s
       > Error: failed to finalise formatting: formatting failures detected
       For full logs, run:
         nix log /nix/store/a0av144r968nsffggwsqb2il7y6rb8gz-treefmt-check.drv
error: Cannot build '/nix/store/a0av144r968nsffggwsqb2il7y6rb8gz-treefmt-check.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/gasvqzp1f8x9338aljwzxhx7wrl33r0v-treefmt-check