Spin off Per6::Type and Perl6::TypeGraph

[JJ]

The problem

Perl6::Type is an ancillary class used here that has been essentially untouched for almost seven years (but for minor additions). It's not tested, or documented.

As a matter of fact, TypeGraph does most of the heavy lifting, with Perl6::Type having some methods, one of which is apparently just a private method.

Suggestions

Spin it off under the Perl 6 organization, and add tests and documentation. Possibly extricate the real stuff from TypeGraph and put it where it should be, in Perl6::Type.
Also check out whether those functions are not really done by something else in the ecosystem, or even in Rakudo itself.

[coke]

Adding the tests and documentation for this module can be done without moving it to a separate repository.

[JJ]

But that would mean adding even more overhead to the tests of this repo, and more stuff that's not strictly documentation. If we need to have it handy, we can just include it in the Docker container we use for testing. Spinning it off will allow, besides testing, being able to approach it for people that would not be strictly interested in the documentation.

[coke]

I'm not sure what the overhead is you're referring to. Adding a test under xt/, for example, adds no overhead to the CD pipeline.

The audience for the module is important when considering spinning it off. If we're using it solely to avoid duplication, for example, having it in a separate repository then increases the complexity of the setup required to use it and maintain it. As far as I can tell, it's not intended to be a general purpose module, but part of the tooling.

[JJ]

Related: #2584
Spin them off as Perl6::Documentable::Type and Perl6::Documentable::Type::Graph

[JJ]

This is already published in the ecosystem. It's the turn of incorporating it to the repo.

[JJ]

Tests are failing. We need to update also the dockerfiles to make this work. Also using this to solve this issue

[JJ]

OK, updated Dockerfiles and the tests are working now.