{
  description = "Petri's system";
  inputs = {
    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-25.11";
    nixpkgs-unstable.url = "github:nixos/nixpkgs/nixos-unstable";
    home-manager = {
      url = "github:nix-community/home-manager/release-25.11";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    agenix = {
      url = "github:ryantm/agenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };
    firefox-addons = {
      url = "gitlab:rycee/nur-expressions?dir=pkgs/firefox-addons";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs =
    inputs@{
      self,
      nixpkgs,
      agenix,
      home-manager,
      nixpkgs-unstable,
      nixos-hardware,
      ...
    }:
    let
      inherit (self) outputs;
      vars = {
        user = "petri";
        name = "Petri Hienonen";
        email = "petri.hienonen@gmail.com";
        location = "$HOME/.nix";
        terminal = "ghostty";
        editor = "nvim";
        shell = "fish";
      };
      pkgs-unstable = import nixpkgs-unstable {
        system = "x86_64-linux";
        config.allowUnfree = true;
      };
    in
    {
      nixosConfigurations = {
        saarni = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            inherit
              agenix
              inputs
              outputs
              vars
              pkgs-unstable
              ;
          };
          modules = [
            ./hosts/saarni
            ./roles/shared.nix
            agenix.nixosModules.default
            home-manager.nixosModules.home-manager
            {
              home-manager = {
                useGlobalPkgs = true;
                useUserPackages = true;
                sharedModules = [ inputs.agenix.homeManagerModules.default ];
                extraSpecialArgs = {
                  inherit
                    vars
                    inputs
                    outputs
                    pkgs-unstable
                    ;
                };
                users = {
                  petri = import ./home;
                };
              };
            }
          ];
        };
        pihlaja = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            inherit
              agenix
              inputs
              outputs
              vars
              pkgs-unstable
              ;
          };
          modules = [
            ./hosts/pihlaja
            ./roles/shared.nix
            agenix.nixosModules.default
            home-manager.nixosModules.home-manager
            {
              home-manager = {
                useGlobalPkgs = true;
                useUserPackages = true;
                sharedModules = [ inputs.agenix.homeManagerModules.default ];
                extraSpecialArgs = {
                  inherit
                    vars
                    inputs
                    outputs
                    pkgs-unstable
                    ;
                };
                users = {
                  petri = import ./home;
                };
              };
            }
            #{
            #nixpkgs = {
            # config.cudaSupport = true;
            #hostPlatform = {
            #  aesSupport = true;
            #  avx2Support = true;
            #  # useLLVM = true;
            #  gcc = {
            #    arch = "x86-64-v3";
            #  };
            #  system = "x86_64-linux";
            #  linker = "mold";
            #  libc = "glibc";
            #};
            #};
            #}
          ];
        };
        kataja = nixpkgs.lib.nixosSystem {
          system = "x86_64-linux";
          specialArgs = {
            inherit
              agenix
              inputs
              outputs
              vars
              pkgs-unstable
              ;
          };
          modules = [
            ./hosts/kataja
            ./roles/shared.nix
            agenix.nixosModules.default
            home-manager.nixosModules.home-manager
            {
              home-manager = {
                useGlobalPkgs = true;
                useUserPackages = true;
                sharedModules = [ inputs.agenix.homeManagerModules.default ];
                extraSpecialArgs = {
                  inherit
                    inputs
                    outputs
                    vars
                    pkgs-unstable
                    ;
                };
                users = {
                  petri = import ./home;
                };
              };
            }
            {
              nixpkgs = {
                config.rocmSupport = true;
                #hostPlatform = {
                #  aesSupport = true;
                #  avx2Support = true;
                #  # useLLVM = true;
                #  gcc = {
                #    arch = "x86-64-v3";
                #  };
                #  system = "x86_64-linux";
                #  linker = "mold";
                #  libc = "glibc";
                #};
              };
            }
          ];
        };
      };
    };
}