can not change to a other python interpreter (Anaconda)

[leavor]

What steps reproduce the problem?

2022-11-10.16-25-14.mp4

Traceback (most recent call last):
  File "D:\conda\envs\python3.9.13\lib\site-packages\spyder\plugins\ipythonconsole\widgets\client.py", line 768, in _restart_thread_main
    self.shellwidget.kernel_manager.restart_kernel(
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\utils.py", line 30, in wrapped
    raise e
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\utils.py", line 27, in wrapped
    return loop.run_until_complete(future)
  File "D:\conda\envs\python3.9.13\lib\site-packages\nest_asyncio.py", line 89, in run_until_complete
    return f.result()
  File "D:\conda\envs\python3.9.13\lib\asyncio\futures.py", line 201, in result
    raise self._exception
  File "D:\conda\envs\python3.9.13\lib\asyncio\tasks.py", line 256, in __step
    result = coro.send(None)
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\manager.py", line 542, in _async_restart_kernel
    await ensure_async(self.start_kernel(**self._launch_args))
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\utils.py", line 30, in wrapped
    raise e
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\utils.py", line 27, in wrapped
    return loop.run_until_complete(future)
  File "D:\conda\envs\python3.9.13\lib\site-packages\nest_asyncio.py", line 89, in run_until_complete
    return f.result()
  File "D:\conda\envs\python3.9.13\lib\asyncio\futures.py", line 201, in result
    raise self._exception
  File "D:\conda\envs\python3.9.13\lib\asyncio\tasks.py", line 256, in __step
    result = coro.send(None)
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\manager.py", line 83, in wrapper
    raise e
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\manager.py", line 75, in wrapper
    out = await method(self, *args, **kwargs)
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\manager.py", line 385, in _async_start_kernel
    kernel_cmd, kw = await ensure_async(self.pre_start_kernel(**kw))
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\utils.py", line 30, in wrapped
    raise e
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\utils.py", line 27, in wrapped
    return loop.run_until_complete(future)
  File "D:\conda\envs\python3.9.13\lib\site-packages\nest_asyncio.py", line 89, in run_until_complete
    return f.result()
  File "D:\conda\envs\python3.9.13\lib\asyncio\futures.py", line 201, in result
    raise self._exception
  File "D:\conda\envs\python3.9.13\lib\asyncio\tasks.py", line 256, in __step
    result = coro.send(None)
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\manager.py", line 351, in _async_pre_start_kernel
    kw = await self.provisioner.pre_launch(**kw)
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\provisioning\local_provisioner.py", line 193, in pre_launch
    kernel_cmd = km.format_kernel_cmd(
  File "D:\conda\envs\python3.9.13\lib\site-packages\jupyter_client\manager.py", line 261, in format_kernel_cmd
    cmd = self.kernel_spec.argv + extra_arguments
  File "D:\conda\envs\python3.9.13\lib\site-packages\spyder\plugins\ipythonconsole\utils\kernelspec.py", line 107, in argv
    get_conda_activation_script(),
  File "D:\conda\envs\python3.9.13\lib\site-packages\spyder\utils\conda.py", line 76, in get_conda_activation_script
    if osp.basename(exe).startswith('micromamba'):
  File "D:\conda\envs\python3.9.13\lib\ntpath.py", line 216, in basename
    return split(p)[1]
  File "D:\conda\envs\python3.9.13\lib\ntpath.py", line 185, in split
    p = os.fspath(p)
TypeError: expected str, bytes or os.PathLike object, not NoneType

Versions

• Spyder version: 5.4.0 (conda)
• Python version: 3.9.13 64-bit
• Qt version: 5.15.2
• PyQt5 version: 5.15.7
• Operating System: Windows 10

Dependencies

# Mandatory:
atomicwrites >=1.2.0          :  1.4.0 (OK)
chardet >=2.0.0               :  4.0.0 (OK)
cloudpickle >=0.5.0           :  2.0.0 (OK)
cookiecutter >=1.6.0          :  1.7.3 (OK)
diff_match_patch >=20181111   :  20200713 (OK)
intervaltree >=3.0.2          :  3.1.0 (OK)
IPython >=7.31.1;<8.0.0       :  7.31.1 (OK)
jedi >=0.17.2;<0.19.0         :  0.18.1 (OK)
jellyfish >=0.7               :  0.9.0 (OK)
jsonschema >=3.2.0            :  4.4.0 (OK)
keyring >=17.0.0              :  23.4.0 (OK)
nbconvert >=4.0               :  6.4.4 (OK)
numpydoc >=0.6.0              :  1.4.0 (OK)
paramiko >=2.4.0              :  2.8.1 (OK)
parso >=0.7.0;<0.9.0          :  0.8.3 (OK)
pexpect >=4.4.0               :  4.8.0 (OK)
pickleshare >=0.4             :  0.7.5 (OK)
psutil >=5.3                  :  5.9.0 (OK)
pygments >=2.0                :  2.11.2 (OK)
pylint >=2.5.0;<3.0           :  2.14.5 (OK)
pylint_venv >=2.1.1           :  2.3.0 (OK)
pyls_spyder >=0.4.0           :  0.4.0 (OK)
pylsp >=1.6.0;<1.7.0          :  1.6.0 (OK)
pylsp_black >=1.2.0           :  1.2.1 (OK)
qdarkstyle >=3.0.2;<3.1.0     :  3.0.2 (OK)
qstylizer >=0.2.2             :  0.2.2 (OK)
qtawesome >=1.2.1             :  1.2.1 (OK)
qtconsole >=5.4.0;<5.5.0      :  5.4.0 (OK)
qtpy >=2.1.0                  :  2.1.0 (OK)
rtree >=0.9.7                 :  0.9.7 (OK)
setuptools >=49.6.0           :  61.2.0 (OK)
sphinx >=0.6.6                :  5.0.2 (OK)
spyder_kernels >=2.4.0;<2.5.0 :  2.4.0 (OK)
textdistance >=4.2.0          :  4.2.1 (OK)
three_merge >=0.1.1           :  0.1.1 (OK)
watchdog >=0.10.3             :  2.1.6 (OK)
zmq >=22.1.0                  :  23.2.0 (OK)

# Optional:
cython >=0.21                 :  0.29.32 (OK)
matplotlib >=3.0.0            :  3.4.3 (OK)
numpy >=1.7                   :  1.23.1 (OK)
pandas >=1.1.1                :  1.4.3 (OK)
scipy >=0.17.0                :  1.8.1 (OK)
sympy >=0.7.3                 :  None (NOK)

[ccordoba12]

Hey @leavor, thanks for reporting. This looks like a very serious issue.

@dalthviz, could you check if you're getting the same problem on Windows?

[ccordoba12]

I'm going to merge this issue with #20023, as suggested by @dalthviz on that issue, and will try to solve the error generated when trying to detect Micromamba too.