Automatic SBT configuration for ScalaPy

supports both JVM and/or Scala Native projects

Quick start

1. Add the plugin to project/plugins.sbt

   addSbtPlugin("ai.kien" % "sbt-scalapy" % "<version>")

2. Enable the plugin for your ScalaPy project in build.sbt

   enablePlugins(ScalaPyPlugin)

   sbt-scalapy would then configure the project to use the python in your current environment. If you want to use another Python version, set the scalapyPythonExecutable key to the interpreter executable,

   could be the absolute path

   scalapyPythonExecutable := "/absolute/path/to/python"

   or just the name of the executable if it's already in PATH

   scalapyPythonExecutable := "python3.9"

Advanced

JVM

ScalaPy for JVM requries the name and location of libpython. You can set these manually instead of letting the plugin automatically figure it out,

scalapyPythonNativeLibrary := "python3.9m"
scalapyPythonNativeLibraryPaths := Seq(
  "/first/directory/to/look/for/libpython",
  "/second/directory/to/look/for/libpython"
)

Scala Native

ScalaPy for Scala Native requries the linker flags for embedding Python. You can set this manually instead of letting the plugin automatically figure it out,

scalapyLinkingOptions := Seq("-l...", "-l...")

Virtualenv

To use a virtualenv Python, you can either activate the virtualenv then start sbt or set scalapyPythonExecutable to the virtualenv Python executable.

For Scala Native, you also need to set the SCALAPY_PYTHON_PROGRAMNAME environment variable to the virtualenv Python executable,

SCALAPY_PYTHON_PROGRAMNAME="/path/to/python" sbt