auto-discovered host config

flake.nix

@@ -16,15 +16,20 @@
   let
     lib = nixpkgs.lib;
     userVars = import ./vars.nix;
-  in
-  {
-    nixosConfigurations = {
-      nabro = lib.nixosSystem {
-        system = "x86_64-linux";
-        specialArgs = { inherit userVars; };
-        modules = [
-          ./hosts/nabro/configuration.nix
 
+    hostsDir = ./hosts;
+    hostNames = builtins.attrNames (
+      lib.filterAttrs (name: type: type == "directory") (builtins.readDir hostsDir)
+    );
+
+    nixosConfigurations = lib.genAttrs hostNames (name:
+      let
+        hostConfig = import (./hosts + "/${name}");
+      in
+      lib.nixosSystem {
+        system = hostConfig.system;
+        specialArgs = { inherit userVars; };
+        modules = [ hostConfig.configModule ] ++ [
           home-manager.nixosModules.home-manager
           {
             home-manager = {
@@ -35,7 +40,10 @@
             };
           }
         ];
-      };
+      }
-    };
+    );
+  in
+  {
+    inherit nixosConfigurations;
   };
 }

hosts/nabro/configuration.nix

@@ -1,19 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-{
-  imports = [
-    ./hardware-configuration.nix
-    ../../modules
-  ];
-
-  networking.hostName = "nabro";
-
-  # Enable host-specific feature branches (dendrites)
-  dotfiles = {
-    core.enable = true;
-    user.enable = true;
-    desktop.enable = true;
-    dev.enable = true;
-    shell.enable = true;
-  };
-}

hosts/nabro/default.nix

@@ -0,0 +1,19 @@
+{
+  system = "x86_64-linux";
+  configModule = { config, lib, pkgs, ... }: {
+    imports = [
+      ./hardware-configuration.nix
+      ../../modules
+    ];
+
+    networking.hostName = "nabro";
+
+    dotfiles = {
+      core.enable = true;
+      user.enable = true;
+      desktop.enable = true;
+      dev.enable = true;
+      shell.enable = true;
+    };
+  };
+}

modules/shell.nix

@@ -60,9 +60,11 @@ in
 
       programs.helix = {
         enable = true;
+        defaultEditor = true;
         settings = {
+          theme = "ayu_dark";
           editor = {
-            line-numbers = "relative";
+            line-number = "relative";
             lsp.display-messages = true;
           };
         };