create-project yields different result between v1 & v2

[nicolas-grekas]

composer create-project symfony/skeleton test-cc 5.2.x-dev

this installs the beta of symfony components with composer v2, and installs them in their 5.x state with composer v1.
Both behaviors can be argued as correct. Which one is desired? I'm reporting in case this is unexpected.

[Seldaek]

composer update --no-plugins in test-cc installs the 5.x-dev then, so I am suspecting this is a flex compat issue with v2.. Most likely it's filtering too much still, or something along those lines. Do you really need this version filtering? Is it really that valuable for v2 still?

[nicolas-grekas]

I am suspecting this is a flex compat issue with v2

Oh, some filtering in flex which happens differently on v1, thanks for having a look, it's on me now.

Do you really need this version filtering? Is it really that valuable for v2 still?

Yes, it's critical to control the version of transitive symfony packages.

[Seldaek]

I am guessing that the issue is you filter on 5.2.* and 5.x-dev resolves to 5.9999999.9999999.9999999-dev which is not in 5.2.*. I am not sure why that'd work in composer 1 though.