Crystal Nix Flake

An opinionated distribution of Crystal, with following packages:

• Crystal
• crystalline
• ameba

This is just enough to get my usual development environment going, and relatively painless to update thanks to the ./update.cr script.

Updates aren't automated yet, but feel free to ping me when I happen to miss a release.

The crystal package comes in two flavours, crystal and crystal-bin. The crystal package is built from source using the crystal-bin one, so if you want to avoid compilation times, you might want to cache them or use the binary version.

Nix Shell Usage

nix shell github:manveru/crystal-flake#crystal
nix shell github:manveru/crystal-flake#ameba
nix shell github:manveru/crystal-flake#crystalline

Nix Flake Usage

{
  description = "Usage example";

  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
    crystal-flake.url = "github:manveru/crystal-flake";
  };

  outputs = {
    nixpkgs,
    crystal-flake,
    ...
  }: let
    system = "x86_64-linux";
    pkgs = nixpkgs.legacyPackages.${system};
    inherit (crystal-flake.legacyPackages.${system}) ameba crystal crystalline;
  in {
    devShells.${system}.default = pkgs.mkShell {
      nativeBuildInputs = [
        ameba
        crystal
        crystalline
      ];
    };
  };
}

Note

The darwin version isn't tested, since I only have an x86_64-linux machine, but in theory the crystal-bin packages should work as well as the official release.