mirror of https://github.com/sbt/sbt.git
47ef80eadf
Problem
In sbt 1, platform cross building is implemented using in the user-land
using `%%%` operator, which clevery handles both Scala cross building
and appending platform suffix like sjs1.
However, in general symbolic `%%%` is confusing, and hard to explain.
Solution
In sbt 2, we should subsume the idea of platform cross building,
so `%%` can act as the current `%%%` operator.
This adds a new field called `platformOpt` to `ModuleID`, which
by default will be set to `None`.
`ScalaModuleInfo` will also add a new field called `platform`,
which can be set to `None`, `Some(sjs1)` etc.
As part of module transformation (like adding `_2.13`), the library
management engine can transform `ModuleID` to `sjs1` etc.
`("com.github.scopt" %% "scopt" % "4.1.0").platform(jvm)` will
explicitly use the JVM version of dependency (equivalent to today's `%%`).
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