Release of v2

[c0d1ngm0nk3y]

A v2 is in the making for roughly a year (?) now, we should clarify what is still missing and finally release a v2.0.0. I see several reasons for that:

1. Workaround like this are discussed and evaluated which would not be necessary with v2
2. It would the buildpack using libpak to implement BUILDPACK API 0.9 which is nearly 2 years old
3. Downstream projects like libpak could release as well
4. There is a risk with having such long living branches (main vs. release 1.x), since it is easier for some regression to slip through over time. I think the double maintenance should be limited.

[dmikusa]

Yes, I agree. I think we're really close.

Where I'm at is giving libcnb v2 some usage and going through libpak, which is Paketo's biggest user of libcnb, to see if it will work for everything we (Paketo) want to do with libpak v2. We have libpak converted to use libcnb v2, so I think the required changes are all here. Again, I'm just going through and exercising it a bit more.

Have you converted any buildpacks to use libcnb v2? How has your experience gone? Any rough edges?

[dmikusa]

I'm going to be cutting an v2.0.0 RC1 release very soon (hopefully today). If folks could test and provide feedback, that would be very helpful.

Also, feedback on https://github.com/buildpacks/libcnb/blob/main/MIGRATION-v1-to-v2.md would be helpful also.

[dmikusa]

RC1 https://github.com/buildpacks/libcnb/releases/tag/v2.0.0-rc.1 has been release.

Please give it a try and report any issues. If all goes well and there are no issues, we can cut a release towards the end of this month. Maybe Oct 21st, that's about two weeks for folks to give this a spin.

Thanks