{
  description = "invoiceninjars: a Rust client for the Invoice Ninja v5 API";

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

  outputs = { self, nixpkgs, rust-overlay, flake-utils, ... }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [ rust-overlay.overlays.default ];
        };

        rustToolchain = pkgs.rust-bin.stable.latest.default.override {
          extensions = [ "rust-src" "rust-analyzer" "clippy" "rustfmt" ];
        };
      in
      {
        devShells.default = pkgs.mkShell {
          packages = [
            rustToolchain
            pkgs.pkg-config
            pkgs.openssl
          ];

          RUST_SRC_PATH = "${rustToolchain}/lib/rustlib/src/rust/library";
        };
      });
}