WIP: next step on image build

modules/config/minimal-modules.nix

@@ -0,0 +1,19 @@
+{ config, lib, ... }: {
+
+  options.boot.kernel.minimalModules = lib.mkEnableOption "minimal kernel modules";
+
+  config = lib.mkIf config.boot.kernel.minimalModules {
+
+    # Don't include kernel or its modules in rootfs
+    boot.kernel.enable = false;
+    boot.modprobeConfig.enable = false;
+    boot.bootspec.enable = false;
+    system.build = { inherit (config.boot.kernelPackages) kernel; };
+    system.modulesTree = [ config.boot.kernelPackages.kernel ] ++ config.boot.extraModulePackages;
+
+    # Modules must be loaded by initrd
+    boot.initrd.kernelModules = config.boot.kernelModules;
+
+  };
+
+}

modules/config/minimal-system.nix

@@ -0,0 +1,17 @@
+{ config, lib, pkgs, ... }: {
+
+  nixpkgs.overlays = [(self: super: {
+
+    systemdUkify = self.callPackage ../../pkgs/systemd-ukify.nix { inherit super; };
+
+    qemu_tiny = self.callPackage ../../pkgs/qemu.nix { inherit super; };
+
+    composefs = self.callPackage ../../pkgs/composefs.nix { inherit super; };
+
+    # dbus = super.dbus.override {
+    #   enableSystemd = false;
+    # };
+
+  })];
+
+}