lib: start moving top-level binds to `binds`

lib/binds.nix

@@ -0,0 +1,70 @@
+{lib}: let
+  inherit (lib.options) mkOption;
+  inherit (lib.modules) mkIf;
+  inherit (lib.types) nullOr str;
+  inherit (lib.attrsets) isAttrs mapAttrs;
+
+  binds = rec {
+    mkLuaBinding = key: action: desc:
+      mkIf (key != null) {
+        "${key}" = {
+          inherit action desc;
+          lua = true;
+          silent = true;
+        };
+      };
+
+    mkExprBinding = key: action: desc:
+      mkIf (key != null) {
+        "${key}" = {
+          inherit action desc;
+          lua = true;
+          silent = true;
+          expr = true;
+        };
+      };
+
+    mkBinding = key: action: desc:
+      mkIf (key != null) {
+        "${key}" = {
+          inherit action desc;
+          silent = true;
+        };
+      };
+
+    mkMappingOption = description: default:
+      mkOption {
+        type = nullOr str;
+        inherit default description;
+      };
+
+    # Utility function that takes two attrsets:
+    # { someKey = "some_value" } and
+    # { someKey = { description = "Some Description"; }; }
+    # and merges them into
+    # { someKey = { value = "some_value"; description = "Some Description"; }; }
+    addDescriptionsToMappings = actualMappings: mappingDefinitions:
+      mapAttrs (name: value: let
+        isNested = isAttrs value;
+        returnedValue =
+          if isNested
+          then addDescriptionsToMappings actualMappings."${name}" mappingDefinitions."${name}"
+          else {
+            inherit value;
+            inherit (mappingDefinitions."${name}") description;
+          };
+      in
+        returnedValue)
+      actualMappings;
+
+    mkSetBinding = binding: action:
+      mkBinding binding.value action binding.description;
+
+    mkSetExprBinding = binding: action:
+      mkExprBinding binding.value action binding.description;
+
+    mkSetLuaBinding = binding: action:
+      mkLuaBinding binding.value action binding.description;
+  };
+in
+  binds

lib/default.nix

@@ -1,6 +1,8 @@
 {lib}: {
-  dag = import ./dag.nix {inherit lib;};
   types = import ./types {inherit lib;};
+
+  binds = import ./binds.nix {inherit lib;};
+  dag = import ./dag.nix {inherit lib;};
   languages = import ./languages.nix {inherit lib;};
   lua = import ./lua.nix {inherit lib;};
   vim = import ./vim.nix {inherit lib;};

lib/vim.nix

@@ -1,4 +1,4 @@
-{lib}: let
+let
   inherit (builtins) isInt isBool toJSON;
 in rec {
   # yes? no.