Install OpenRCT2 on NixOS - Quickstart Guide
The installation is currently based on your nixpkgs-channel. If you're using the unstable channel, just install the package.
nix-env -iA nixos.openrct2
If you're on an stable channel (like 17.09 or older) you can install this single package from the unstable channel.
nix-env -f https://github.com/NixOS/nixpkgs-channels/archive/nixos-unstable.tar.gz -iA openrct2
Alternatively you can build the expression from the nixpkgs.
Select your RCT2 game files location
When OpenRCT2 first launches, you will be prompted to select the directory where you installed RollerCoaster Tycoon 2. You can also set the RCT2 path from the command line should you wish - use the command below.
openrct2 set-rct2 /path/to/rct2-install
End of Quickstart Guide
This concludes the Quickstart Guide. It's time to play OpenRCT2. If you have any questions, don't hesitate to ask for help on the forums.