wrappers: pass in existing lib.nixvim

Extracting `specialArgs.lib.nixvim` from the final `programs.nixvim`
configuration is neat, but recursive. In non-lazy scenarios, it can end
up infinitely recursive.

We could extract `specialArgs.lib.nixvim` from another nixvim
configuration, such as one of the earlier `extendModules` evaluations,
however it is better to avoid evaluating multiple configurations
unnecessarily.

Instead, revert back to getting `lib.nixvim` from the same configuration
we get `extendModules` from.

modules/wrappers.nix

@@ -4,7 +4,10 @@
   ...
 }:
 let
-  importWrapper = lib.flip lib.modules.importApply { inherit extendModules; };
+  importWrapper = lib.flip lib.modules.importApply {
+    inherit extendModules;
+    nixvimLib = lib.nixvim;
+  };
 in
 {
   options.build = {

wrappers/_shared.nix

@@ -1,4 +1,6 @@
 {
+  # A `lib.nixvim` instance
+  nixvimLib,
   # Function used to evaluate the `programs.nixvim` configuration
   extendModules,
   # Option path where extraFiles should go
@@ -86,7 +88,7 @@ in
       # NOTE: It is important that we use the flake-locked Nixpkgs lib,
       # so that we can safely use recently added lib features.
       # TODO: Consider deprecating `_module.args.nixvimLib`?
-      lib.nixvim = lib.mkDefault finalConfiguration._module.specialArgs.lib.nixvim;
+      lib.nixvim = lib.mkDefault nixvimLib;
       _module.args.nixvimLib = lib.mkDefault (lib.extend libOverlay);
     }
 

wrappers/darwin.nix

@@ -1,4 +1,5 @@
 {
+  nixvimLib,
   extendModules,
 }:
 {
@@ -20,6 +21,7 @@ in
 
   imports = [
     (importApply ./_shared.nix {
+      inherit nixvimLib;
       inherit
         (extendModules {
           specialArgs.darwinConfig = config;

wrappers/hm.nix

@@ -1,4 +1,5 @@
 {
+  nixvimLib,
   extendModules,
 }:
 {
@@ -17,6 +18,7 @@ in
 
   imports = [
     (import ./_shared.nix {
+      inherit nixvimLib;
       inherit
         (extendModules {
           specialArgs.hmConfig = config;

wrappers/nixos.nix

@@ -1,4 +1,5 @@
 {
+  nixvimLib,
   extendModules,
 }:
 {
@@ -17,6 +18,7 @@ in
 
   imports = [
     (import ./_shared.nix {
+      inherit nixvimLib;
       inherit
         (extendModules {
           specialArgs.nixosConfig = config;