This is a great refactor of the select functionality in the flake class.
This now uses the same parser as the nix code, but runs it in python for
nice stacktraces.
Also we now have a maybe selector which can be used by prepending the
selector with a ?
Tests have been expanded to make sure the code is more stable and easier
to understand
We cannot support dynamic hashInvalidation.
This means the invalidation can change *after* or *before* a 'vars generate'
But not during the generation itself. This causes heavy performance overhead.
Additionally this introduces a fixed-point-iteration (compare: fixed-point-iteration vs. fixed-point-function)
This iteration takes ~ 1min for two bare-bones machine with 1 generator (see: checks/data-mesher)
this functionality is not really useful or used in clan-vm-manager and
therefore should live in the clan-vm-manager.
Not porting the test for now because we probably get rid of the clan-vm-manager soon in favour of the UI.
... instead of loading both keys and raise an error
This is important for testing when one wants to override SOPS_AGE_KEY_FILE
New prio: `SOPS_AGE_KEY` > `SOPS_AGE_KEY_FILE` > `~/.config/sops/age/keys.txt`
Move the `tests` folder to `clan_cli/tests`.
As we now want part of our tests to live next to the functions that are
tested - tests that are not in the `/tests` module also need access to
the configured test fixtures that are exposed by the `pytest_plugins`
declaration.
The following folder structure doesn't support this model:
```
├── clan_cli
│ ├── api
│ │ └── api_init_test.py
├── tests/
│ ├── conftest.py
│ └── ...
```
Here `api_init_test.py` even when importing the test functions will not
have the fixtures configured.
There is a way to configure python to import the fixtures from another
[`project/module`](https://docs.pytest.org/en/stable/how-to/fixtures.html#using-fixtures-from-other-projects), but this seems to *generally* be discouraged.
So moving the `conftest.py` to the toplevel and the `/tests` folder into
the toplevel seems to be a sensible choice choice.
