It seems that on scallywag it works, so it is problem on my computer only. Still it does
not explain why and how to fix.
scallywag: running 'cygport all-test test'
>>> Preparing duplicity-3.0.7-2.x86_64
>>> Unpacking source duplicity-rel.3.0.7.tar.gz
*** Info: applying patch 01-docdir.patch (-p2):
patching file setup.py
Hunk #1 succeeded at 113 with fuzz 1 (offset 14 lines).
>>> Preparing working source directory
>>> Compiling duplicity-3.0.7-2.x86_64
Processing /cygdrive/d/a/scallywag/duplicity/duplicity-3.0.7-2.x86_64/build
Preparing metadata (pyproject.toml): started
Preparing metadata (pyproject.toml): finished with status 'done'
Building wheels for collected packages: duplicity
Building wheel for duplicity (pyproject.toml): started
Building wheel for duplicity (pyproject.toml): finished with status 'done'
Created wheel for duplicity:
filename=duplicity-3.0.7-cp312-cp312-cygwin_3_6_6_x86_64.whl size=1078278
sha256=413e755e79294d77aa3365a9f969086d4abb6d464ec548d445a3138dbeecdfbe
Stored in directory:
/tmp/pip-ephem-wheel-cache-p0wui8k8/wheels/ff/99/0a/4710eab3c8a3e8690280473f0ccdc54f0b5819c3e8f07fd236
Successfully built duplicity
Dne 07.02.2026 v 19:04 Libor Ukropec via Cygwin napsal(a):
I'm trying to move duplicity python package move from python3.9 to 3.12. The cygport file
is using python3-wheel.
For python 3.9 it works, for Python 3.12 I have the below error. I tried re-installing
python packages, even doing `C:\cygwin64\bin\dash.exe -c /usr/bin/rebaseall`, reboot to
make sure there's no stale cygwin.dll. No change. Any tips how to try to find the culprit
or fix?
```bash
$ cygport duplicity.cygport download all-test check
>>> Preparing duplicity-3.0.7-2.x86_64
>>> Unpacking source duplicity-rel.3.0.7.tar.gz
*** Info: applying patch 01-docdir.patch (-p2):
patching file setup.py
Hunk #1 succeeded at 113 with fuzz 1 (offset 14 lines).
>>> Preparing working source directory
>>> Compiling duplicity-3.0.7-2.x86_64
Processing /home/libor/cyg-port/duplicity/duplicity-3.0.7-2.x86_64/build
Preparing metadata (pyproject.toml): started
0 [main] python3.12 5948 child_info_fork::abort: address space needed by
'StringIOTree.cpython-312-x86_64-cygwin.dll' (0x6C0000) is already occupied
Preparing metadata (pyproject.toml): finished with status 'error'
error: subprocess-exited-with-error
× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [25 lines of output]
0 [main] python3.12 5948 child_info_fork::abort: address space needed by
'StringIOTree.cpython-312-x86_64-cygwin.dll' (0x6C0000) is already occupied
Traceback (most recent call last):
File "/usr/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/
_in_process.py", line 389, in <module>
main()
File "/usr/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/
_in_process.py", line 373, in main
json_out["return_val"] = hook(**hook_input["kwargs"])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/site-packages/pip/_vendor/pyproject_hooks/_in_process/
_in_process.py", line 175, in prepare_metadata_for_build_wheel
return hook(metadata_directory, config_settings)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/site-packages/setuptools/build_meta.py", line 374, in
prepare_metadata_for_build_wheel
self.run_setup()
File "/usr/lib/python3.12/site-packages/setuptools/build_meta.py", line 317, in
run_setup
exec(code, locals())
File "<string>", line 187, in <module>
File "<string>", line 144, in get_data_files
File "/usr/lib/python3.12/subprocess.py", line 548, in run
with Popen(*popenargs, **kwargs) as process:
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/subprocess.py", line 1026, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "/usr/lib/python3.12/subprocess.py", line 1885, in _execute_child
self.pid = _fork_exec(
^^^^^^^^^^^
BlockingIOError: [Errno 11] Resource temporarily unavailable
[end of output]
note: This error originates from a subprocess, and is likely not a problem
with pip.
error: metadata-generation-failed
× Encountered error while generating package metadata.
╰─> from file:///home/libor/cyg-port/duplicity/duplicity-3.0.7-2.x86_64/build
note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
*** ERROR: pip3.12 wheel failed
```
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