flakes/templates/devshells/elixir/flake.nix

{
  description = "Development environment";

  inputs = {
    nixpkgs = {
      url = "github:NixOS/nixpkgs/nixpkgs-unstable";
    };
    flake-utils = {
      url = "github:numtide/flake-utils";
    };
  };

  outputs =
    {
      self,
      nixpkgs,
      flake-utils,
    }:
    flake-utils.lib.eachDefaultSystem (
      system:
      let
        inherit (nixpkgs.lib) optional;
        pkgs = import nixpkgs { inherit system; };

        elixir = pkgs.beam.packages.erlang.elixir;
        elixir-ls = pkgs.beam.packages.erlang.elixir_ls;
      in
      {
        devShell = pkgs.mkShell {
          buildInputs = [
            elixir
          ];
        };
      }
    );
}