[BUG] Running Mojo in notebooks is impossible in any setup on macOS

[DimiM99]

Bug description

Running mojo in Notebooks is impossible

• global, project or no magic env. -> kernel either won't start or crashes for no reason

Steps to reproduce

• install magic as intro suggests
• create any project
• create a .ipynb file
• if using vscode select the Mojo (max) kernel
  or
• run magic run jupyter lab from magic shell env (for conda base env active/inactive before entering magic shell results may vary)

cases observed:

• VSCode
  kernel just won't start with logs pointing at ~/.modular/pkg/packages.modular.com_max/venv/bin/python not existing but it does.
• jupyter lab via: magic shel -> magic run jupyter lab
  if conda base env was active only "Mojo (max)" kernel is shown and it fails to start similar to vscode
  if no conda env was active "Mojo (max)" and "MAX (Conda ENV Mojo kernel)" are shown but both die with log errors

[I 2025-01-16 00:37:15.788 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (5/5), new random ports
Traceback (most recent call last):
  File "/Users/user1/Library/Jupyter/kernels/mojo-max-jupyter-kernel/mojokernel.py", line 26, in <module>
    from ipykernel.kernelapp import IPKernelApp
ModuleNotFoundError: No module named 'ipykernel'

and

[I 2025-01-16 00:38:41.303 ServerApp] AsyncIOLoopKernelRestarter: restarting kernel (5/5), new random ports
Traceback (most recent call last):
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/share/jupyter/kernels/mojo/mojokernel.py", line 390, in <module>
    IPKernelApp.launch_instance(
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/lib/python3.12/site-packages/traitlets/config/application.py", line 1074, in launch_instance
    app.initialize(argv)
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/lib/python3.12/site-packages/traitlets/config/application.py", line 118, in inner
    return method(app, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/lib/python3.12/site-packages/ipykernel/kernelapp.py", line 707, in initialize
    self.init_kernel()
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/lib/python3.12/site-packages/ipykernel/kernelapp.py", line 555, in init_kernel
    kernel = kernel_factory(
             ^^^^^^^^^^^^^^^
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/lib/python3.12/site-packages/traitlets/config/configurable.py", line 583, in instance
    inst = cls(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/share/jupyter/kernels/mojo/mojokernel.py", line 190, in __init__
    self.lib_mojo_jupyter: ctypes.CDLL = self.load_mojo_lib()
                                         ^^^^^^^^^^^^^^^^^^^^
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/share/jupyter/kernels/mojo/mojokernel.py", line 243, in load_mojo_lib
    config.get(config_section, "repl_entry_point").rstrip(";")
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/lib/python3.12/configparser.py", line 759, in get
    d = self._unify_values(section, vars)
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/user1/Developer/Code/OtherProjects/poking_around/mojo_src/.magic/envs/default/lib/python3.12/configparser.py", line 1132, in _unify_values
    raise NoSectionError(section) from None
configparser.NoSectionError: No section: 'mojo-max-nightly'

respectively

System information

- macOS on apple silicon (in my case 15.1.1 on M1 Pro MacBook Pro)
- conda (mini conda) for python envs management
- magic installed from scratch (latest stable version)
magic 0.6.2 - (based on pixi 0.40.0)
mojo 24.6.0 (4487cd6e)

[DimiM99]

this issue seems to be related modular/max#277