feat: big refactor

modules/core/default.nix

@@ -0,0 +1,89 @@
+{ pkgs, ... }@inputs:
+{
+  imports = [
+    ./applications.nix
+    ./audio.nix
+    ./bluetooth.nix
+    ./keyd.nix
+    ./network.nix
+    ./nvidia.nix
+    ./power.nix
+    ./printing.nix
+    ./profiling.nix
+    ./security.nix
+    ./shell.nix
+    ./virtualisation.nix
+  ];
+
+  nix = {
+    settings = {
+      experimental-features = [
+        "nix-command"
+        "flakes"
+      ];
+      auto-optimise-store = true;
+    };
+  };
+
+  nixpkgs = {
+    overlays = [
+      (self: super: {
+        unstable = import inputs.nixpkgs-unstable { system = super.system; };
+        mfcl3750cdwlpr = (super.callPackage ../../overlays/mfcl3750cdw.nix { }).driver;
+        mfcl3750cdwcupswrapper = (super.callPackage ../../overlays/mfcl3750cdw.nix { }).cupswrapper;
+        pppdf = (super.python3Packages.callPackage ../../overlays/pppdf { });
+        iglesia-light = (super.callPackage ../../overlays/fonts/iglesia-light.nix { });
+      })
+    ];
+    config = {
+      allowUnfree = true;
+      allowUnfreePredicate = (_: true);
+    };
+  };
+
+  # provide libraries for non-nix binaries
+  # programs.nix-ld = {
+  #   enable = true;
+  #   libraries = [
+  #     # glibc
+  #     # libcxx
+  #     # libllvm
+  #     # ncurses
+  #   ];
+  # };
+
+  system.stateVersion = "23.05";
+
+  time.timeZone = "Europe/Berlin";
+
+  i18n = {
+    defaultLocale = "en_US.UTF-8";
+    supportedLocales = [
+      "en_US.UTF-8/UTF-8"
+      "de_DE.UTF-8/UTF-8"
+    ];
+  };
+
+  console = {
+    font = "Lat2-Terminus16";
+    keyMap = "us";
+  };
+
+  programs.dconf.enable = true;
+  services.dbus = {
+    enable = true;
+    packages = with pkgs; [
+      gcr # gnome crypto services (daemon and tools)
+      dconf
+    ];
+  };
+
+  programs.ccache = {
+    enable = true;
+  };
+
+  services.openssh = {
+    enable = true;
+    openFirewall = true;
+  };
+}