[RFC]: Mezzio v4

[boesing]

RFC

Q	A
Proposed Version(s)	4.0.0
BC Break?	Yes

Goal

• Remove callable response factory support
• Add latest coding standard and add declare(strict_types=1); where its missing

Background

We already prepared v3 to support native PSR-17 factories (when available) and now we just have to create a new major to drop support for the callable factory.

Considerations

mezzio/mezzio (like laminas/laminas-mvc) is supposed to work as a "project". I dont think that there are too many components which depend on it and thus, we can safely create a new major.

Proposal(s)

To get fully PSR-17 compatible, we just have to remove the ResponseInterface service usage (which was used to receive a callable which creates a PSR-7 ResponseInterface when being invoked.

Appendix

Affected components

Component	PSR-17 compatible
mezzio/mezzio-router	❗ as of 3.6.0 ResponseFactoryInterface, StreamFactoryInterface still missing
mezzio/mezzio-authentication-basic	✔️ as of 1.4.0
mezzio/mezzio-authentication-laminasauthentication	✔️ as of 1.3.0
mezzio/mezzio-authentication-oauth2	✔️ as of 2.4.0
mezzio/mezzio-authentication-session	✔️ as of 1.4.0
mezzio/mezzio-authorization	✔️ as of 1.4.0
mezzio/mezzio-hal	✔️ as of 2.3.0
mezzio/mezzio-problem-details	✔️ as of 1.5.0
mezzio/mezzio-problem-details	❌
laminas/laminas-httphandlerrunner	not affected

Project to keep track of current implementation status

• https://github.com/orgs/mezzio/projects/5

[weierophinney]

@boesing I guess we're ready for the BC breaking 4.0 now, since all components are now updated. 😄

[boesing]

Meh, I've forgot one component here: laminas/laminas-stratigility.