flake.nix

{
  description = "Easy flake";

  inputs = {
    flake-utils.url = "github:numtide/flake-utils";
    nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
    rust-overlay.url = "github:oxalica/rust-overlay";
    # naersk.url = "github:nix-community/naersk";
    crane = {
      url = "github:ipetkov/crane";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, flake-utils, nixpkgs, rust-overlay, crane }:
    flake-utils.lib.eachDefaultSystem (system:
      with nixpkgs.lib;

      let
        pkgs = import nixpkgs {
          inherit system;
          overlays = [
            rust-overlay.overlays.default
            ( self: super: {
              python = super.python310Packages;
            })
          ];
        };
        # naersk-lib = naersk.lib.${system};
        craneLib = crane.lib.${system};
        rust-module = import ./modules/rust.nix { inherit pkgs flake-utils craneLib; lib = pkgs.lib; };
        python-module = import ./modules/python.nix { inherit pkgs flake-utils; lib = pkgs.lib; };
      in {
        pkgs = pkgs;

        rust = {
          env = rust-module.rust;
        };

        python = {
          env = python-module.python;
          pkgs = pkgs.python310Packages;
        };

        shell = { shell }:
          flake-utils.lib.eachDefaultSystem (system: {
              devShell = import shell { inherit pkgs; };
          }); # end shell
      } # end output-set
    );
}