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scalasbtsbt-assembly

How to exclude libraries from different tasks in sbt?

I have the following project structure:

/
├── project
|   └── ...
├── src
|   └── ... 
├── lib
│   ├── prod-lib.jar
|   └── test-lib.jar
└── build.sbt

And I need to compile with test-lib.jar for deploying into a testing environment and with prod-lib.jar for deploying into a production environment.

Both of them have the same API for accessing the things I need, so my source code does not have any problem with neither of them, but both have subtle differences on how they implement their execution in the background.

Is there a way to create a "sbt task" (Or maybe anything else) that can ignore one jar or the other, but in both perform the assembly task anyway?

Solution

  • Put your jars in different folders and set unmanagedBase key in Compile and Test scopes correspondingly:

    > set unmanagedBase in Compile := baseDirectory.value / "lib-compile"
> show compile:assembly::unmanagedBase
[info] /project/foo/lib-compile
> set unmanagedBase in Test := baseDirectory.value / "lib-test"
> show test:assembly::unmanagedBase
[info] /project/foo/lib-test

    But don't forget to call assembly task in the corresponding scope then (compile:assembly or test:assembly), because in Global it's still the default:

    > show assembly::unmanagedBase
[info] /project/foo/lib