{ description = "A Nix-flake-based Scala development environment"; inputs = { flake-utils.url = "github:numtide/flake-utils"; nixpkgs.url = "github:NixOS/nixpkgs"; }; outputs = { self , flake-utils , nixpkgs }: flake-utils.lib.eachDefaultSystem (system: let javaVersion = 17; overlays = [ (self: super: rec { jdk = super."jdk${toString javaVersion}"; sbt = super.sbt.override { jre = jdk; }; scala = super.scala_3.override { jre = jdk; }; }) ]; pkgs = import nixpkgs { inherit overlays system; }; in { devShells.default = pkgs.mkShell { buildInputs = with pkgs; [ scala sbt coursier ]; shellHook = '' ${pkgs.scala}/bin/scala -version ''; }; }); }