Issue installing Flair backend on Debian with python 3.10

The installation from the flair backend's requirements.txt file is failing in so many steps - failing to build the wheels for scikit-learn, uwsgi, gensim, etc. A sample of the myriad errors that I see is :+1:
In file included from /usr/include/python3.10/unicodeobject.h:1046,
from /usr/include/python3.10/Python.h:83,
from gensim/_matutils.c:18:
/usr/include/python3.10/cpython/unicodeobject.h:446:26: note: declared here
446 | static inline Py_ssize_t _PyUnicode_get_wstr_length(PyObject *op) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
gensim/_matutils.c: In function ‘__Pyx_decode_c_string’:
gensim/_matutils.c:25254:9: warning: ‘PyUnicode_FromUnicode’ is deprecated [-Wdeprecated-declarations]
25254 | return PyUnicode_FromUnicode(NULL, 0);
| ^~~~~~
In file included from /usr/include/python3.10/unicodeobject.h:1046,
from /usr/include/python3.10/Python.h:83,
from gensim/_matutils.c:18:
/usr/include/python3.10/cpython/unicodeobject.h:551:42: note: declared here
551 | Py_DEPRECATED(3.3) PyAPI_FUNC(PyObject*) PyUnicode_FromUnicode(
| ^~~~~~~~~~~~~~~~~~~~~
error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for gensim

Start by reproducing the installation from the Flair backend's requirements.txt on Debian with Python 3.10, recording the failures for scikit-learn, gensim, and uwsgi. Read the reported wheel-build output and determine the scope of the compatibility issue; done means the requirements install successfully in the stated environment.

Written by the indexing model from the issue text.