Please try to get the Glasgow Haskell Compiler installed. If you have any issue, we’ll try to solve them during the first meeting.
The easiest way to install GHC is to use the minimal installer for your platform. Other options are OK too, e.g. you can install it using your package manager.
Also you can use online tools like this, though they don’t provide access to interactive environment.
Addition: repl.it has Haskell IDE and runnable command line.
If you are interested in remote please see the setup script.
See also Zurihac recommendations: https://github.com/zfoh/haskell-simple-install