sharedSrcDir should be a setting

[mdedetrich]

In https://github.com/mdedetrich/scalajson, we have a situation where we want to share the shared directory across different sbt-crossprojects. Currently the shared directory is hardcoded in the CrossType (see https://github.com/scala-native/sbt-crossproject/blob/f4ef45fc4a89a69d60dc438f42a8bbb40c1c1d11/sbt-crossproject/src/main/scala/sbtcrossproject/CrossType.scala#L33-L38).

Ideally there should be some "sharedSource" Setting which you can override to make it easy to specify your own

[sjrd]

Or you can just write your own CrossType.

[sjrd]

we want to share the shared directory across different sbt-crossprojects

That looks very weird. IMO you're doing something wrong, or at least something that is not even supposed to be handled by a crossProject.

You know you can just add

unmanagedSourceDirectories += whatever

in your settings, right? That would basically be the same as your hypothetical

sharedSource := whatever

[mdedetrich]

@sjrd I am not that familiar with SBT, but my use case can be found when you look in this branch of ScalaJSON https://github.com/mdedetrich/scalajson/tree/safeJNumberConstructor

Basically, I have specific build only for Scala 2.10.x however I still want the shared of the Scala 2.10.x build to use the generic shared. i.e. https://github.com/mdedetrich/scalajson/blob/safeJNumberConstructor/shared/src/main/scala-2.10/scalajson.ast/package.scala is the exact same file as https://github.com/mdedetrich/scalajson/blob/safeJNumberConstructor/shared/src/main/scala/scalajson/ast/package.scala and I wan't to remove this duplication

[sjrd]

Well in that branch you're completely overriding all the hard work of sbt-crossproject with that line: mdedetrich/scalajson@32b180f#diff-fdc3abdfd754eeb24090dbd90aeec2ceR99

Maybe you wanted += instead of := there? With := there, it doesn't matter what sbt-crossproject does or does not do, because you're overriding it all.