我正试图降级libffi = 3.3，因为我遇到了一个bug(见结尾).
conda install libffi==3.3 -n mismatch
Channels:
- defaults
Platform: linux-64
Collecting package metadata (repodata.json): done
Solving environment: \ warning libmamba Added empty dependency for problem type SOLVER_RULE_UPDATE
failed
LibMambaUnsatisfiableError: Encountered problems while solving:
- package python-3.11.8-h955ad1f_0 requires libffi >=3.4,<3.5, but none of the providers can be installed
Could not solve for environment specs
The following packages are incompatible
├─ libffi 3.3 is requested and can be installed;
├─ matplotlib is installable with the potential options
│ ├─ matplotlib [3.6.2|3.7.1|3.7.2] would require
│ │ └─ matplotlib-base [>=3.6.2,<3.6.3.0a0 |>=3.7.1,<3.7.2.0a0 |>=3.7.2,<3.7.3.0a0 ] with the potential options
│ │ ├─ matplotlib-base [3.6.2|3.7.1|3.7.2] would require
│ │ │ └─ python >=3.11,<3.12.0a0 , which requires
│ │ │ └─ libffi >=3.4,<3.5 , which conflicts with any installable versions previously reported;
│ │ ├─ matplotlib-base [3.6.2|3.7.1|3.7.2] would require
│ │ │ └─ python >=3.10,<3.11.0a0 , which can be installed;
│ │ ├─ matplotlib-base [3.2.1|3.2.2|...|3.7.2] would require
│ │ │ └─ python >=3.8,<3.9.0a0 , which can be installed;
│ │ └─ matplotlib-base [3.3.2|3.6.2|3.7.1|3.7.2] would require
│ │ └─ python >=3.9,<3.10.0a0 , which can be installed;
│ ├─ matplotlib 3.8.0 would require
│ │ └─ python >=3.11,<3.12.0a0 , which cannot be installed (as previously explained);
│ ├─ matplotlib [2.0.2|2.1.0|...|2.2.3] would require
│ │ └─ python >=2.7,<2.8.0a0 , which can be installed;
│ ├─ matplotlib [2.0.2|2.1.0|...|3.0.0] would require
│ │ └─ python >=3.5,<3.6.0a0 , which can be installed;
│ ├─ matplotlib [2.0.2|2.1.0|...|3.3.4] would require
│ │ └─ python >=3.6,<3.7.0a0 , which can be installed;
│ ├─ matplotlib [2.2.2|2.2.3|...|3.5.3] would require
│ │ └─ python >=3.7,<3.8.0a0 , which can be installed;
│ ├─ matplotlib [3.1.1|3.1.2|...|3.7.2] would require
│ │ └─ python >=3.8,<3.9.0a0 , which can be installed;
│ ├─ matplotlib [3.2.1|3.2.2|3.3.1] would require
│ │ └─ matplotlib-base [>=3.2.1,<3.2.2.0a0 |>=3.2.2,<3.2.3.0a0 |>=3.3.1,<3.3.2.0a0 ] with the potential options
│ │ ├─ matplotlib-base [3.2.1|3.2.2|...|3.7.2], which can be installed (as previously explained);
│ │ ├─ matplotlib-base [3.2.1|3.2.2|3.3.1|3.3.2] would require
│ │ │ └─ python >=3.6,<3.7.0a0 , which can be installed;
│ │ └─ matplotlib-base [3.2.1|3.2.2|3.3.1|3.3.2] would require
│ │ └─ python >=3.7,<3.8.0a0 , which can be installed;
│ ├─ matplotlib 3.3.2 would require
│ │ └─ matplotlib-base >=3.3.2,<3.3.3.0a0 , which can be installed (as previously explained);
│ ├─ matplotlib [3.3.4|3.4.2|...|3.8.0] would require
│ │ └─ python >=3.9,<3.10.0a0 , which can be installed;
│ ├─ matplotlib [3.5.0|3.5.1|...|3.8.0] would require
│ │ └─ python >=3.10,<3.11.0a0 , which can be installed;
│ └─ matplotlib 3.8.0 would require
│ └─ python >=3.12,<3.13.0a0 , which can be installed;
└─ pin-1 is not installable because it requires
└─ python 3.11.* , which conflicts with any installable versions previously reported.
(mismatch) :$ conda list python -n mismatch
# packages in environment at /home/x/anaconda3/envs/mismatch:
#
# Name Version Build Channel
python 3.11.8 h955ad1f_0
正如你所看到的，我已经把python降级到了3.11——为什么conda solver会抱怨"pin1"以及它对python 3.11的要求？
我遇到的bug是由pystata触发的，并且在降级Python和libffi后得到了解决，如答案所示:
Traceback (most recent call last):
File "/usr/local/stata18/utilities/pystata/config.py", line 239, in init
stlib = cdll.LoadLibrary(lib_path)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "~/anaconda3/envs/mismatch/lib/python3.12/ctypes/__init__.py", line 460, in LoadLibrary
return self._dlltype(name)
^^^^^^^^^^^^^^^^^^^
File "~/anaconda3/envs/mismatch/lib/python3.12/ctypes/__init__.py", line 379, in __init__
self._handle = _dlopen(self._name, mode)
^^^^^^^^^^^^^^^^^^^^^^^^^
OSError: /usr/lib/x86_64-linux-gnu/libp11-kit.so.0: undefined symbol: ffi_type_pointer, version LIBFFI_BASE_7.0
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/snap/pycharm-professional/378/plugins/python/helpers/pydev/pydevd.py", line 1534, in _exec
pydev_imports.execfile(file, globals, locals) # execute the script
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/snap/pycharm-professional/378/plugins/python/helpers/pydev/_pydev_imps/_pydev_execfile.py", line 18, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File "main.py", line 17, in <module>
config.init('be')
File "/usr/local/stata18/utilities/pystata/config.py", line 241, in init