{
  description = "A very basic flake";
  inputs = {

    nixpkgs.url = "github:nixos/nixpkgs/nixos-22.05";
    colmena = {
      url = "github:zhaofengli/colmena";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    nixos-generators = {
      url = "github:nix-community/nixos-generators";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, colmena, nixos-generators, ... }:
    let
      pkgs = nixpkgs.legacyPackages.x86_64-linux;
      machine = name: machineTagged name [ ];
      machineTagged = name: tags: {
        imports = [ "${./.}/machines/${name}" ];
        deployment = {
          targetHost = "${name}.lxd";
          tags = tags;
        };
      };
    in {

      packages.x86_64-linux.hello = pkgs.hello;

      packages.x86_64-linux.default = colmena.packages.x86_64-linux.colmena;

      packages.x86_64-linux.register = let
        lxc = nixos-generators.nixosGenerate {
          pkgs = pkgs;
          modules = [ ./machines/base ];
          format = "lxc";
        };
        metadata = nixos-generators.nixosGenerate {
          pkgs = pkgs;
          modules = [ ./machines/base ];
          format = "lxc-metadata";
        };
      in with import nixpkgs { system = "x86_64-linux"; };
      stdenv.mkDerivation {
        name = "register-lxc-container";
        buildInputs = [ ];
        src = self;
        buildPhase =
          "mkdir -p $out; ln -s ${lxc} $out/lxc; ln -s ${metadata} $out/metadata";
        installPhase = ''
          ln -s $out/lxc/tarball/nixos-system-x86_64-linux.tar.xz $out/lxc.tar.xz; 
          ln -s $out/metadata/tarball/nixos-system-x86_64-linux.tar.xz $out/metadata.tar.xz;
        '';
      };

      packages.x86_64-linux.vm = let
        vm = nixos-generators.nixosGenerate {
          pkgs = pkgs;
          modules = [ ./machines/base ];
          format = "qcow";
        };
        metadata = nixos-generators.nixosGenerate {
          pkgs = pkgs;
          modules = [ ./machines/base ];
          format = "lxc-metadata";
        };
      in with import nixpkgs { system = "x86_64-linux"; };
      stdenv.mkDerivation {
        name = "make-nixos-vm";
        buildInputs = [ ];
        src = self;
        buildPhase =
          "mkdir -p $out; ln -s ${vm} $out/vm; ln -s ${metadata} $out/metadata";
        installPhase =
          "ln -s $out/vm/nixos.qcow2 $out/nixos.qcow2;ln -s $out/metadata/tarball/nixos-system-x86_64-linux.tar.xz $out/metadata.tar.xz;";
      };

      colmena = {
        meta = { nixpkgs = import nixpkgs { system = "x86_64-linux"; }; };
        nginx = {
          imports = [ ./machines/nginx ];
          deployment = {
            targetHost = "nginx.lxd";
            tags = [ "website" ];
          };
        };
        postgres = {
          imports = [ ./machines/postgres ];
          deployment = {
            targetHost = "postgres.lxd";
            tags = [ "database" ];
          };
        };
        gitea = {
          imports = [ ./machines/gitea ];
          deployment = {
            targetUser = "jdejeu";
            targetHost = "gitea.lxd";
            tags = [ "website" "system" ];
          };
        };

        vault = {
          imports = [ ./machines/vault ];
          deployment = {
            targetHost = "vault.lxd";
            tags = [ "website" "system" ];
          };
        };

        minio = {
          imports = [ ./machines/minio ];
          deployment = {
            targetHost = "minio.lxd";
            tags = [ "system" ];
          };
        };

        registry = {
          imports = [ ./machines/registry ];
          deployment = {
            targetHost = "registry.lxd";
            tags = [ "system" ];
          };
        };

        vaultwarden = {
          imports = [ ./machines/vaultwarden ];
          deployment = {
            targetHost = "vaultwarden.lxd";
            tags = [ "system" ];
          };
        };

        misskey = {
          imports = [ ./machines/misskey ];
          deployment = {
            targetHost = "misskey.lxd";
            tags = [ ];
          };
        };
        grafana = {
          imports = [ ./machines/grafana ];
          deployment = {
            targetHost = "grafana.lxd";
            tags = [ ];
          };
        };
        prometheus = machine "prometheus";

      };

      devShells.x86_64-linux.default = pkgs.mkShell {
        buildInputs = [
          colmena.packages.x86_64-linux.colmena
          pkgs.jq
          pkgs.bundix
          pkgs.nix-prefetch-git
        ];
      };

    };
}