{
  description = "nix_builder development environment";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs = {
        nixpkgs.follows = "nixpkgs";
      };
    };
  };

  outputs =
    {
      self,
      nixpkgs,
      rust-overlay,
    }:
    let
      forAllSystems =
        func:
        builtins.listToAttrs (
          map (system: {
            name = system;
            value = func system;
          }) nixpkgs.lib.systems.flakeExposed
        );

    in
    {
      devShells = forAllSystems (
        system:
        let
          overlays = [ (import rust-overlay) ];
          pkgs = import nixpkgs {
            inherit system overlays;
          };
          rustToolchain = pkgs.pkgsBuildHost.rust-bin.fromRustupToolchainFile ./rust-toolchain.toml;
        in
        {
          default = pkgs.mkShell {
            nativeBuildInputs = [
              pkgs.pkg-config
              rustToolchain
            ];
            buildInputs = with pkgs; [
              sqlx-cli # For sqlx CLI to manage migrations
              sqlite # To access the database (sqlite is bundled into the nix_builder binary but this is for manually accessing the db).
            ];
            shellHook = ''
              cat <<EOF
              nix_builder dev shell

              Create new migrations with:
                sqlx migrate add -r <name>

              Generate metadata for query!() macros:
                cargo sqlx prepare
              EOF
            '';
          };
        }
      );
    };
}