Welcome to Lang Jam, a weekend coding jam. It carries much of the spirit of game jams, where teams create a video game in a weekend. In Lang Jam, you and your teammates will create a programming language based on the theme for that jam.
The first Lang Jam will be held on Friday the 20th of August, starting at 7pm UK time. It will run for 48 hours, ending at 7pm on Sunday the 22nd of August. Check back here for more info.
At the start of each jam, a new repo will be created on GitHub that will hold the projects. Each team will create a PR that will add a directory for their team to the jam repo based on the team template, including the GitHub handles of the team members.
At this point, the team begins their projects. They can use personal repos to develop ideas before they're ready to show them publically, but to count as part of the jam, the team's final code needs to be submitted as a PR before the jam's cutoff time.
Each jam will have a theme for that weekend. Your projects should build on that theme and show that theme in their final design. You can build an interpreter or a compiler, so long as it can run or build examples of code in the programming language you create.