A repository template for Scala development in Codespaces
This GitHub repository template enables Scala 3 development in GitHub Codespaces.
As a starting point, the repository defines a minimal sbt project containing a "Hello, world." function and one unit test. The project is ready to be extended.
To facilitate development in Codespaces, the repository defines a dev container that references an official sbt image, making available a JDK, Scala and sbt. It also enables several VS Code extensions, including Scala Syntax for syntax highlighting and Metals for a fully-fledged IDE experience.
The repository also defines VS Code settings, which, among other things, provide that Scalafmt is the default formatter and that it is applied automatically upon saving a file.
| Branch | Ubuntu | JDK (Eclipse Temurin) | Scala | sbt | ScalaTest (sbt dependency) |
Scala Syntax (VS Code extension) |
Scala Metals (VS Code extension) |
Scalafmt (via Scala Metals) |
|---|---|---|---|---|---|---|---|---|
main |
22.04.3 | 17.0.8.1+1 | 3.3.1 | 1.9.7 | 3.2.17 | 0.5.7 | 1.26.1 | 3.7.15 |
scala-3.3.0 |
22.04.1 | 17.0.5+8 | 3.3.0 | 1.9.3 | 3.2.16 | 0.5.7 | 1.24.4 | 3.7.12 |
scala-3.2.2 |
22.04.1 | 17.0.5+8 | 3.2.2 | 1.8.2 | 3.2.15 | 0.5.6 | 1.23.0 | 3.7.3 |
- Create a new repository based on this repository template.
- Create a codespace for the new repository.
- When prompted by Metals with "New sbt workspace detected", click "Import build".
Optionally, refactor the following files and directories to remove references to this repository template:
.devcontainer/devcontainer.jsonname
build.sbtorganizationname
src/main/scala- Package declaration in
HelloWorld.scala - Package subdirectories accordingly
- Package declaration in
src/test/scala- Package declaration in
HelloWorldTest.scala - Package subdirectories accordingly
- Package declaration in