lib/types: gen lua config in the keymap submodule

default.nix

@@ -3,20 +3,23 @@
 , nix2lua ? import <nix2lua>
 }:
 
+
+let nix2lua' = nix2lua; in
 let
   inherit (pkgs.lib) evalModules filter concatMapStringsSep showWarnings;
 
-  extendedLib = import ./lib { inherit (pkgs) lib; };
+  nix2lua = nix2lua'.lib;
+
+  lib = import ./lib {
+    inherit (pkgs) lib;
+    inherit nix2lua;
+  };
 
   allModules = import ./module-list.nix { inherit pkgs; };
 
   rawModule = evalModules {
     modules = [ config ] ++ allModules;
-    specialArgs = {
-      inherit pkgs;
-      lib = extendedLib;
-      nix2lua = nix2lua.lib;
-    };
+    specialArgs = { inherit pkgs lib nix2lua; };
   };
 
   failedAssertions = map (x: x.message) (filter (x: !x.assertion) rawModule.config.assertions);

lib/default.nix

@@ -1,7 +1,7 @@
-{ lib }:
+{ lib, nix2lua }:
 
 let
-  types = import ./types.nix { inherit lib; };
+  types = import ./types.nix { inherit lib nix2lua; };
 in
 lib // {
   types = lib.types // types;

lib/types.nix

@@ -1,4 +1,4 @@
-{ lib }:
+{ lib, nix2lua }:
 
 let
   modeEnum = lib.types.enum [ "" "n" "!" "i" "c" "v" "x" "s" "o" "t" "l" ];
@@ -126,6 +126,21 @@ let
           Human-readable description.
         '';
       };
+
+      genConfig = mkOption {
+        type = types.attrs;
+        readOnly = true;
+        internal = true;
+      };
+    };
+
+    config = {
+      genConfig = with nix2lua; call "vim.keymap.set" [
+        config.mode
+        config.lhs
+        config.rhs
+        { inherit (config) buffer nowait silent script expr unique remap desc; }
+      ];
     };
   });
 in

modules/build/neovim.nix

@@ -46,8 +46,7 @@ in
           buf = lib.optionalString (vars.buffer != null) vars.buffer;
           m = if builtins.isList mode then lib.head mode else mode;
         in
-        if config.vim.keymap._validate."${buf}"."${m}"."${lhs}" == rhs then
-          call "vim.keymap.set" [ mode lhs rhs (removeAttrs vars [ "mode" "lhs" "rhs" ]) ]
+        if config.vim.keymap._validate."${buf}"."${m}"."${lhs}" == rhs then vars.genConfig
         else abort "This case should never happen."
       ))
     ]));