Installation
Install the almond kernel
A Java Virtual Machine (JVM) needs to be installed on your system. You can check if a JVM is installed by running
$ java -version
java version "1.8.0_121"
Java(TM) SE Runtime Environment (build 1.8.0_121-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.121-b13, mixed mode)
If you don't have a JVM yet, we recommend installing AdoptOpenJDK version 8.
Almond can then be fetched and installed with coursier, like
$ curl -Lo coursier https://git.io/coursier-cli
$ chmod +x coursier
$ ./coursier launch --use-bootstrap almond -- --install
$ rm -f coursier
Note the -- before --install, separating the arguments passed to Almond from the ones handled by coursier.
You can specify explicit Almond and / or Scala versions, like
$ ./coursier launch --use-bootstrap almond:0.10.0 --scala 2.12.11 -- --install
Short Scala versions, like just 2.12 or 2.13, are accepted too. The available versions of Almond can be found here. Not all Almond and Scala versions combinations are available. See the possible combinations here.
Equivalent Windows command
> bitsadmin /transfer downloadCoursierCli https://git.io/coursier-cli "%cd%\coursier"
> bitsadmin /transfer downloadCoursierBat https://git.io/coursier-bat "%cd%\coursier.bat"
> .\coursier launch --use-bootstrap almond -M almond.ScalaKernel -- --install
Once the kernel is installed, you can use it within Jupyter or nteract.
Getting help about the launcher
Pass --help instead of --install, like
$ ./coursier launch --use-bootstrap almond -- --help
Update the almond kernel
To update the almond kernel, just re-install it, but passing the --force option to almond (like ./coursier launch --use-bootstrap almond -- --install --force). That will override any previous almond (or kernel with name scala).
Uninstall the almond kernel
To uninstall the almond kernel, use jupyter kernelspec remove scala.