init

modules/home-manager/editors/default.nix

@@ -0,0 +1,29 @@
+{ lib
+, config
+, ...
+}:
+
+let
+  cfg = config.custom.editors;
+in
+{
+  imports = [
+    ./helix.nix
+  ];
+
+  options.custom.editors = {
+    defaultEditor = lib.mkOption {
+      type = lib.types.enum [ "helix" ];
+      default = null;
+      description = "Which editor to use as the default one. If set to null the default editor won't be set explicitly.";
+    };
+  };
+
+  config = lib.mkIf (cfg.defaultEditor != null) {
+    assertions = [
+      { assertion = (config.custom.editors.${cfg.defaultEditor}.enable);
+        message = "Can't set an editor as the default if it is disabled.";
+      }
+    ];
+  };
+}