Pull request: #2745

Pull request: #2746

See also alexarchambault/mill-native-image#61

Pull request: #2747

Co-authored-by: Tobias Roeser <[email protected]>

Pull request: #2754

fixes #2749

The basic problem is that the signature of `Discover.apply()` changed,
but it only changed in the argument's generic type parameters, so it was
nominally the same type after erasure, and accepted the `Map[Class[_],
Seq]` even though it was expecting a `Map[Class[_], (Seq, Seq)]`, but
later on in the code it would blow up with a `ClassCastException`

This causes problems with Mill plugins containing external modules,
which have their own `Discover[T]` macro pre-expanded and would not get
re-compiled with the new 0.11.3 version of Mill.

This PR works around the problem by adding a forwarder
`Discover.apply(value: Map[Class, Seq])` that does the right thing and
expands the `Seq` into a `(Seq, Seq)`, while adding a dummy paramter to
`case class Discover` to avoid conflicts. A similar forwarder
`Discover.<init>(value: Map[Class, Seq])` is needed to preserve binary
compatibility (I think?)

Tested manually via `./mill -i dev.run example/basic/1-simple-scala
--import ivy:io.chris-kipp::mill-github-dependency-graph::0.2.6
io.kipp.mill.github.dependency.graph.Graph/generate`, which fails before
this PR and passes after

---------

Co-authored-by: Chris Kipp <[email protected]>
Co-authored-by: Tobias Roeser <[email protected]>