allow duplicate requirements in the morgan.ini file

[grische]

This allows the following syntax to pull in both version 0.3.1 as well as 0.4.0:

[env.windows]
os_name = nt
platform_tag = win_amd64
sys_platform = win32
platform_machine = AMD64
platform_python_implementation = CPython
platform_system = Windows
python_version = 3.12
python_full_version = 3.12.7
implementation_name = cpython

[requirements]
extremeflash = ==0.3.1
extremeflash = ==0.4.0

The old syntax, is still supported, though:

[requirements]
extremeflash = ==0.3.1
               ==0.4.0

The new syntax can be disabled with the flag --enforce-unique-requirements.

[shamilbi]

Could you please explain the reasoning behind introducing new syntax when the existing one is functioning well?

[grische]

Could you please explain the reasoning behind introducing new syntax when the existing one is functioning well?

The idea was that one can take several files, e.g. lock file derivatives, and concatenate them without having to worry about collecting previously existing entries in the list.

If this is not something that you'd like here, I can also implement this logic on a higher layer. We just thought that's something that people had asked in the past and it seemed like a very convenient feature.

[grische]

It might be worth though to drop --enforce-unique-requirements. I only added it in case someone requires the old behaviour.

[ido50]

Yeah I don't think we need that flag. I have no problem with supporting both syntaxes, seems fine to me.

[ido50]

Merged it manually, not sure why GitHub doesn't recognize it.