flake.nix

{
  description = "A Nix-flake-based C development environment";


  nixConfig = {
    builders-use-substitutes = true;
    experimental-features = [ "nix-command" "flakes" ];
    substituters = [
      https:/mirrors.sjtug.sjtu.edu.cn/nix-channels/store
      "https://cache.nixos.org/"
    ];
    extra-substituters = [
      "https://nix-community.cachix.org"
    ];
    extra-trusted-public-keys = [
      "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
    ];
  };

  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";

  outputs = { self, nixpkgs }:
    let
      supportedSystems = [ "x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin" ];
      forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
        pkgs = import nixpkgs { inherit system; };
      });
    in
    {
      devShells = forEachSupportedSystem ({ pkgs }: {
        default = pkgs.mkShell {
          packages = with pkgs; [ 
            #tools
            gdb
            gnumake
            gcc
            cmake
            clang-tools
          ];
        };
      });
      # shellHook = ''
      #   exec fish
      # '';
    };
}