{
  description = "Prymn";

  nixConfig = {
    extra-trusted-public-keys = "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=";
    extra-substituters = "https://devenv.cachix.org";
  };

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

  outputs = { self, nixpkgs, devenv, flake-utils, rust-overlay, crane }@inputs:
    flake-utils.lib.eachDefaultSystem (system:
      let
        overlays = [ (import ./nix/overlay.nix) (import rust-overlay) ];
        pkgs = import nixpkgs { inherit system overlays; };
        rustBuilder = import ./nix/rust.nix { inherit crane pkgs system; };
      in
      {
        packages = {
          devenv-up = self.devShells.${system}.default.config.procfileScript;
        };

        devShells.default = devenv.lib.mkShell {
          inherit pkgs inputs;

          modules = [
            ({ pkgs, config, ... }: {
              packages = [
                pkgs.elixir
                pkgs.elixir-ls
                pkgs.rustToolchain
                pkgs.go
              ] ++ pkgs.lib.optionals pkgs.stdenv.isLinux [ pkgs.inotify-tools ];

              services.postgres = {
                enable = true;
                package = pkgs.postgresql_16;
                initialDatabases = [{ name = "prymn_dev"; }];
                initialScript = "CREATE USER postgres SUPERUSER;";
              };

              enterShell = ''
                echo happy deving
              '';
            })
          ];
        };

        checks.rustTest = rustBuilder.test;
        checks.rustClippy = rustBuilder.clippy;
        checks.rustFormat = rustBuilder.format;

        packages.agent-x86_64-linux = rustBuilder.package "x86_64-linux";
        packages.agent-aarch64-linux = rustBuilder.package "aarch64-linux";
      });
}