backend setup failed

[MrTango]

when i try to generate a full project with backend and frontend, the backend generation is failing.

  [1/17] Project Title (Project Title): mcfm
  [2/17] Project Description (A new project using Plone 6.): 
  [3/17] Project Slug (Used for repository id) (mcfm): 
  [4/17] Project URL (without protocol) (mcfm.example.com): 
  [5/17] Author (Plone Foundation): 
  [6/17] Author E-mail ([email protected]): 
  [7/17] Should we use prerelease versions? (No): 
  [8/17] Plone Version (6.0.12): 
  [9/17] Volto Version (18.0.0-alpha.42): 
  [10/17] Python Package Name (mcfm): 
  [11/17] Volto Addon Name (volto-mcfm): 
  [12/17] Language
    1 - English
    2 - Deutsch
    3 - Español
    4 - Português (Brasil)
    5 - Nederlands
    6 - Suomi
    Choose from [1/2/3/4/5/6] (1): 
  [13/17] GitHub or GitLab Username or Organization (collective): 
  [14/17] Container Registry
    1 - GitHub Container Registry
    2 - Docker Hub
    3 - GitLab
    Choose from [1/2/3] (1): 
  [15/17] Should we setup a caching server?
    1 - Yes
    2 - No
    Choose from [1/2] (1): 
  [16/17] Add Ansible playbooks?
    1 - Yes
    2 - No
    Choose from [1/2] (1): 
  [17/17] Add GitHub Action to Deploy this project?
    1 - Yes
    2 - No
    Choose from [1/2] (1): 
╭──────────────────────────────────────────────────────────────────────────── mcfm generation ─────────────────────────────────────────────────────────────────────────────╮
│                                                                                                                                                                          │
│ Summary:                                                                                                                                                                 │
│                                                                                                                                                                          │
│   - Plone version: 6.0.12                                                                                                                                                │
│   - Volto version: 18.0.0-alpha.42                                                                                                                                       │
│   - Output folder: /home/maik/develop/jlu/mcfm/tmp/mcfm                                                                                                                  │
│                                                                                                                                                                          │
│                                                                                                                                                                          │
╰──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────╯
 -> Initialize Git repository
 -> Setup Backend
Traceback (most recent call last):
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/cookieplone/generator.py", line 56, in generate
    result = cookiecutter(
             ^^^^^^^^^^^^^
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/cookiecutter/main.py", line 161, in cookiecutter
    prompt_for_config(context_for_prompting, no_input)
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/cookiecutter/prompt.py", line 283, in prompt_for_config
    cookiecutter_dict[key] = render_variable(env, raw, cookiecutter_dict)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/cookiecutter/prompt.py", line 224, in render_variable
    return template.render(cookiecutter=cookiecutter_dict)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/jinja2/environment.py", line 1304, in render
    self.environment.handle_exception()
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/jinja2/environment.py", line 939, in handle_exception
    raise rewrite_traceback_stack(source=source)
  File "<template>", line 1, in top-level template code
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/cookieplone/filters/__init__.py", line 14, in package_name
    return v.split(".")[1]
           ~~~~~~~~~~~~^^^
IndexError: list index out of range

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/tmp/tmp6i693i9f.py", line 175, in <module>
    main()
  File "/tmp/tmp6i693i9f.py", line 146, in main
    func(new_context, output_dir)
  File "/tmp/tmp6i693i9f.py", line 63, in generate_backend_addon
    generator.generate_subtemplate(
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/cookieplone/generator.py", line 133, in generate_subtemplate
    raise exc
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/cookieplone/generator.py", line 116, in generate_subtemplate
    result = generate(
             ^^^^^^^^^
  File "/home/maik/.local/pipx/.cache/874b532047f20f9/lib/python3.11/site-packages/cookieplone/generator.py", line 91, in generate
    raise GeneratorException(message=str(e), original=e)  # noQA:B904
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
cookieplone.exceptions.GeneratorException
ERROR: Stopping generation because post_gen_project hook script didn't exit successfully
Hook script failed (exit status: 1)

[stevepiercy]

@MrTango can you try specifying Plone 6.0.11, same Volto? This is an issue with generating the backend. Maybe a package was renamed? I'd also check the Plone 6.0.12 release notes for any package shenanigans.

[davisagli]

@MrTango The cookieplone templates don't currently support Python package names without a namespace. As a workaround you can generate collective.mcfm and then manually remove the namespace folder.

I'll close the issue because it's a duplicate of #34