{
  description = "A TUI for the Canvas LMS.";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
    fenix = {
      url = "github:nix-community/fenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    naersk.url = "github:nix-community/naersk";
  };

  outputs =
    {
      nixpkgs,
      flake-utils,
      fenix,
      naersk,
      ...
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        pkgs = import nixpkgs { inherit system; };
        naersk' = pkgs.callPackage naersk { };
        defaultBuildOpts = {
          cargo = fenix.packages.${system}.stable.cargo;
          rustc = fenix.packages.${system}.stable.rustc;
          src = ./.;

          nativeBuildInputs = with pkgs; [ pkg-config ];
          buildInputs = with pkgs; [ openssl ];

          mode = "build";
        };
      in
      {
        devShells.default = pkgs.mkShell {
          buildInputs = with pkgs; [
            pkg-config
            openssl
            fenix.packages.${system}.stable.completeToolchain
          ];
        };
        packages = {
          default = naersk'.buildPackage defaultBuildOpts;
          test = naersk'.buildPackage (
            defaultBuildOpts
            // {
              mode = "test";
            }
          );
        };
      }
    );
}