refactor: Use haumea for filesystem-based module system for flake outputs

refactor: Use hyphen(`-`) for variable names & folder names(except Python), replace all unserscore(`_`) with hyphen(`-`).

hosts/rolling-girls-chiaya/default.nix

@@ -0,0 +1,43 @@
+{
+  # nixos-jh7110,
+  myvars,
+  ...
+}:
+#############################################################
+#
+#  Chiaya - NixOS Configuration for Milk-V Mars
+#
+#  WIP, not working yet.
+#
+#############################################################
+let
+  hostName = "chiaya"; # Define your hostname.
+  hostAddress = myvars.networking.hostAddress.${hostName};
+in {
+  imports = [
+  ];
+
+  # Set static IP address / gateway / DNS servers.
+  networking = {
+    inherit hostName;
+    inherit (myvars.networking) defaultGateway nameservers;
+
+    # Failed to enable firewall due to the following error:
+    #   firewall-start[2300]: iptables: Failed to initialize nft: Protocol not supported
+    firewall.enable = false;
+    networkmanager.enable = false;
+    # milkv-mars RJ45 port
+    interfaces.end0 = {
+      useDHCP = false;
+      ipv4.addresses = [hostAddress];
+    };
+  };
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "23.05"; # Did you read the comment?
+}