fix(chore): use a callable for defaults

[lecrepont01]

Without a callable the defaults are evaluated on import which causes unexpected errors with other commands.

[mergify]

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[sileht]

Lazy loading them is a good idea.

We cannot just use a lambda otherwise cli arguments will be ignored and we will always load the default.

[sileht]

Lazy loading them is a good idea.

We cannot just use a lambda otherwise cli arguments will be ignored and we will always load the default.

I remake a couple of tests and it seems, the issue occurs only when is_flag=True

[sileht]

I reproduce the issue in a simplier app https://github.com/sileht/click-bug :

# without lambda:
$ poetry run python3 main.py work
False
$ poetry run python3 main.py work -v
True

# with lambda:
$ poetry run python3 main.py buggy
False
$ poetry run python3 main.py buggy -v
False

[lecrepont01]

I reproduce the issue in a simplier app https://github.com/sileht/click-bug :

# without lambda:
$ poetry run python3 main.py work
False
$ poetry run python3 main.py work -v
True

# with lambda:
$ poetry run python3 main.py buggy
False
$ poetry run python3 main.py buggy -v
False

ThanksI am not sure I understand why user input does not always prevail when it is passed but I'll take a better look to find a fix.

Pull request has been modified.