{
  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = {
    self,
    nixpkgs,
    flake-utils,
  }:
    flake-utils.lib.eachDefaultSystem
    (system: let
      pkgs = import nixpkgs {inherit system;};
      pname = "osdb";
      version = "0.1.0";
    in {
      devShells.default = pkgs.mkShell {
        buildInputs = [
          # build tools
          pkgs.cargo
          # lsp
          pkgs.rustc
          pkgs.rust-analyzer
          # fmt
          pkgs.rustfmt
          # devtools
          pkgs.clippy
          pkgs.bacon
          pkgs.cargo-semver-checks
        ];
      };
      packages.default = pkgs.rustPlatform.buildRustPackage {
        src = ./.;
        cargoLock.lockFile = ./Cargo.lock;
        inherit pname version;
      };
    });
}