flake-parts/setups: add configName option

modules/flake-parts/setups/home-manager.nix

@@ -135,7 +135,7 @@ let
 
     config = {
       modules = [
-        ../../../configs/home-manager/${name}
+        ../../../configs/home-manager/${config.configName}
 
         (
           let

modules/flake-parts/setups/nixos.nix

@@ -302,7 +302,7 @@ let
     config.modules = [
       # Bring in the required modules.
       inputs.${config.homeManagerBranch}.nixosModules.home-manager
-      ../../../configs/nixos/${name}
+      ../../../configs/nixos/${config.configName}
 
       # Mapping the declarative home-manager users (if it has one) into NixOS
       # users.
@@ -403,7 +403,7 @@ let
             programs.nixvim = { ... }: {
               enable = lib.mkDefault true;
               imports =
-                partsConfig.setups.nixvim.${config.nixvim.instance}.modules
+                partsConfig.setups.nixvim.configs.${config.nixvim.instance}.modules
                 ++ partsConfig.setups.nixvim.sharedModules
                 ++ setupConfig.nixvim.additionalModules;
             };

modules/flake-parts/setups/nixvim.nix

@@ -69,7 +69,7 @@ let
 
     config = {
       modules = [
-        ../../../configs/nixvim/${name}
+        ../../../configs/nixvim/${config.configName}
       ];
     };
   };

modules/flake-parts/setups/shared/config-options.nix

@@ -1,4 +1,4 @@
-{ lib, systems, ... }: {
+{ lib, name, systems, ... }: {
   options = {
     systems = lib.mkOption {
       type = with lib.types; listOf str;
@@ -18,5 +18,15 @@
         A list of NixOS modules specific for that host.
       '';
     };
+
+    configName = lib.mkOption {
+      type = lib.types.nonEmptyStr;
+      default = name;
+      example = "plover";
+      description = ''
+        The name of the configuration to be used. Useful for creating variants
+        of the same declarative environment.
+      '';
+    };
   };
 }