Labs Setup

This page contains instructions on how to set up your computer such that you can:

  • program your assignments,
  • share them with your teammate via a version control system,
  • submit your labs for grading, and
  • use our black-box testing system.

Step 1) Installing and Configuring Eclipse

You are by no means required to use an IDE. If you wish to do so, we recommend that you use Eclipse with the Scala plug-in. Skip this step if you are not going to use Eclipse.

We suggest that you download directly the Scala IDE package that contains Eclipse already. Make sure you get the version for Scala 2.11.

All labs will be done in pairs. We have set up a version control system around Git, which you will use to share your project code with your partner, but also to submit your labs.

Step 2) Creating a Public/Private SSH Key Pair

Authentication to the git repository works by using a SSH key. If you do not already have a private/public key combination for your computer, follow these instructions. Note that you typically generate one key pair per computer that you use.

From the Command Line

  1. Type ssh-keygen -t rsa -b 2048.
  2. Type enter to save it in the default location.
  3. Choose a passphrase, or type enter to ignore it.
  4. Your public key is now stored in a file (typically, in ~/.ssh/ You will need to copy-paste the content of this file into our webservice.

Step 3) Project Web Interface

The web interface for your project will be directly linked to your git repository. It will allow you to run tests, submit deliverables, receive feedback, etc..

The web interface is located at (Tequila authentication required.)

As mentionned earlier, all labs will be done in pairs. Try to form groups of two as much as possible. You will have the choice of either creating a new group or joining an existing group.

  1. Go to and authenticate yourself
  2. The first time you go there, you can either create a group or wait until somebody created a group with you.
  3. Once you are within a group, go to the YourName > SSH Keys tab, and register the Public SSH key you just generated. Make sure you copy your entire key, including the `ssh-rsa` prefix and the key identifier at the end.

Step 4) Setting up Your Project

You should start by installing Git and sbt for your platform.

From the Command Line

The first step is to clone the git repository:

$ git clone

(Exact URI is provided in the web interface under Repository)

Then, use sbt 0.13 ( to compile your project:

$ cd clp2014-group??
$ sbt
> compile
> ...
> run programs/Pi.tool

Create an Eclipse Project

To create an Eclipse project corresponding to your sbt project, install and run sbt, then:

$ sbt
> eclipse

Note: if you encounter dependencies error related to sbteclipse, make sure you are running sbt 0.13!

You can then import this project from Eclipse, under FileImport…General > Existing projects into Workspace

To run your project, you need to add a new Run Configuration based on Scala Application, use toolc.Main as Main class, and pass e.g. programs/Pi.tool as argument.


Dependency for sbt-eclipse not found

Make sure you are running sbt 0.13!

The Git repository is asking you for a password

No password will ever work. This simply means that the ssh key-pair is not properly installed.

Make sure the public key can be accessed under ~/.ssh/ and that you copied the entire key to the web interface: ssh-rsa AASDFFOOBAR…