these 4 derivations will be built:
  /nix/store/gf4h8x5zi2iylzdz65whjrx2ndc93k52-ruamel.yaml-0.17.40.tar.gz.drv
  /nix/store/hnqxnwhq4pzn337rcwnysb7cd5iwdfch-python3.14-ruamel-yaml-0.17.40.drv
  /nix/store/j8kb63znj53hfcbcwx8lzwcqfjj9z4p5-source.drv
  /nix/store/96dr5wm5k2kg5fh0a8l243fz65ligfp2-python3.14-evcouplings-0.2.1.drv
these 26 paths will be fetched (130.4 MiB download, 476.2 MiB unpacked):
  /nix/store/yr19h6j9806xl5hm8k9a920jax8l349n-hh-suite-3.3.0
  /nix/store/884qz72q85g622pr360q5l1225ydykyn-hmmer-3.4
  /nix/store/hlbv2ii2c181qc3k56kknq24r0r2ah1y-python3.14-billiard-4.2.4
  /nix/store/1kn842dvhmzs0zifvj498i4lp9zb0dmf-python3.14-bokeh-3.8.2
  /nix/store/ihz9q28y84frni99adp8zzcin07j38gk-python3.14-contourpy-1.3.3
  /nix/store/q2j58iim4i4mx6bwg4dx97y1828f4dhc-python3.14-cycler-0.12.1
  /nix/store/hhmzvf64ry4z7g5mp77v1zfr4d7k2dfm-python3.14-editables-0.5
  /nix/store/nhrljnw82767as8fd8pqag1x7mc6mj9i-python3.14-fonttools-4.63.0
  /nix/store/j83caldc02xf7sirlshpigz3mqv7p0pd-python3.14-hatchling-1.30.1
  /nix/store/80k5s6qxdgxng1c6bv0za1x7cyy9804w-python3.14-joblib-1.5.3
  /nix/store/8kzshcy7n9rc2l2hgr561blmr7hykh0c-python3.14-kiwisolver-1.4.9
  /nix/store/xr8l0d08wbmx663qhrwc11z8hraqcnzm-python3.14-llvmlite-0.47.0
  /nix/store/bda5018g9p2l7hmv3iykc6lrh3d3n7va-python3.14-lz4-4.4.5
  /nix/store/if8khkmgxckc8569smhxjy1v5zvvbyb0-python3.14-matplotlib-3.11.0
  /nix/store/44ig0x6zrlnqpwcdgirxa84i52hrhdp7-python3.14-narwhals-2.23.0
  /nix/store/0c61w8k1r20hcymrwiy7sa4xc1819lrq-python3.14-numba-0.65.1
  /nix/store/r5vsy55zgw5qzkh357cmzpvmlrg7lwi7-python3.14-pathspec-1.1.1
  /nix/store/z8zm1d0h20y4bgf3gv65nh9fxdbgqhiw-python3.14-pluggy-1.6.0
  /nix/store/p2f9r934ipy8dfccxn5jbq2gyr61vlpq-python3.14-pyparsing-3.3.2
  /nix/store/ckn8lagns0pgvm8ljfzwq73nvjapa1kq-python3.14-scikit-learn-1.8.0
  /nix/store/jm9jxyf6j67d21f4c8imx98xy6rkrkd4-python3.14-seaborn-0.13.2
  /nix/store/lyrrq10415pvhad7dwqpxdy4lzvwd5x3-python3.14-threadpoolctl-3.6.0
  /nix/store/415a3qa5vc17giay4qn0zjlz37s5117q-python3.14-tkinter-3.14.6
  /nix/store/xs6lxrcygrv9564fn78qwlqgl8q96ygm-python3.14-tornado-6.5.7
  /nix/store/z6pgzqzraw8n6x1qb85rxmpvq6qfnnqz-python3.14-trove-classifiers-2026.5.20.19
  /nix/store/7ksn06x8wjndjvwrfksjd93256g3pypg-python3.14-xyzservices-2026.3.0
error: Cannot build '/nix/store/hnqxnwhq4pzn337rcwnysb7cd5iwdfch-python3.14-ruamel-yaml-0.17.40.drv'.
       Reason: builder failed with exit code 1.
       Output paths:
         /nix/store/mn9ysfny2l8y456v7j4173dl28rpfypk-python3.14-ruamel-yaml-0.17.40-dist
         /nix/store/z72myw6x2gg1v12v2scsifqcvjzs160g-python3.14-ruamel-yaml-0.17.40
       Last 25 log lines:
       > Creating a wheel...
       > pypa build flags: --no-isolation --outdir dist/ --wheel
       > * Getting build dependencies for wheel...
       > Traceback (most recent call last):
       >   File "/nix/store/48azs8q3m2gc3vgrjlb2i89c12klzsna-python3.14-pyproject-hooks-1.2.0/lib/python3.14/site-packages/pyproject_hooks/_in_process/_in_process.py", line 389, in <module>
       >     main()
       >     ~~~~^^
       >   File "/nix/store/48azs8q3m2gc3vgrjlb2i89c12klzsna-python3.14-pyproject-hooks-1.2.0/lib/python3.14/site-packages/pyproject_hooks/_in_process/_in_process.py", line 373, in main
       >     json_out["return_val"] = hook(**hook_input["kwargs"])
       >                              ~~~~^^^^^^^^^^^^^^^^^^^^^^^^
       >   File "/nix/store/48azs8q3m2gc3vgrjlb2i89c12klzsna-python3.14-pyproject-hooks-1.2.0/lib/python3.14/site-packages/pyproject_hooks/_in_process/_in_process.py", line 143, in get_requires_for_build_wheel
       >     return hook(config_settings)
       >   File "/nix/store/g13nfjvdbmszw808xyzvw35in1s30s68-python3.14-setuptools-82.0.1/lib/python3.14/site-packages/setuptools/build_meta.py", line 333, in get_requires_for_build_wheel
       >     return self._get_build_requires(config_settings, requirements=[])
       >            ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
       >   File "/nix/store/g13nfjvdbmszw808xyzvw35in1s30s68-python3.14-setuptools-82.0.1/lib/python3.14/site-packages/setuptools/build_meta.py", line 301, in _get_build_requires
       >     self.run_setup()
       >     ~~~~~~~~~~~~~~^^
       >   File "/nix/store/g13nfjvdbmszw808xyzvw35in1s30s68-python3.14-setuptools-82.0.1/lib/python3.14/site-packages/setuptools/build_meta.py", line 317, in run_setup
       >     exec(code, locals())
       >     ~~~~^^^^^^^^^^^^^^^^
       >   File "<string>", line 79, in <module>
       > ImportError: cannot import name 'Str' from 'ast' (/nix/store/jxyrvv4gbpnp3ap5iy7wxwl1sg4x2x88-python3-3.14.6/lib/python3.14/ast.py)
       >
       > ERROR Backend subprocess exited when trying to invoke get_requires_for_build_wheel
       For full logs, run:
         nix log /nix/store/hnqxnwhq4pzn337rcwnysb7cd5iwdfch-python3.14-ruamel-yaml-0.17.40.drv
error: Cannot build '/nix/store/96dr5wm5k2kg5fh0a8l243fz65ligfp2-python3.14-evcouplings-0.2.1.drv'.
       Reason: 1 dependency failed.
       Output paths:
         /nix/store/jp6s6vnn0l58jrshg2sgmxjayfs4365q-python3.14-evcouplings-0.2.1
         /nix/store/slxav42s76ki68kwqcsf1lmhfr7f8i7x-python3.14-evcouplings-0.2.1-dist
error: Build failed due to failed dependency