treewide: begin restructuring the module tree

modules/plugins/ui/modes/config.nix

@@ -0,0 +1,21 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  inherit (lib.modules) mkIf;
+  inherit (lib.nvim.dag) entryAnywhere;
+  inherit (lib.nvim.lua) toLuaObject;
+
+  cfg = config.vim.ui.modes-nvim;
+in {
+  config = mkIf cfg.enable {
+    vim.startPlugins = [
+      "modes-nvim"
+    ];
+
+    vim.luaConfigRC.modes-nvim = entryAnywhere ''
+      require('modes').setup(${toLuaObject cfg.setupOpts})
+    '';
+  };
+}

modules/plugins/ui/modes/default.nix

@@ -0,0 +1,6 @@
+{
+  imports = [
+    ./modes.nix
+    ./config.nix
+  ];
+}

modules/plugins/ui/modes/modes.nix

@@ -0,0 +1,48 @@
+{lib, ...}: let
+  inherit (lib.options) mkOption mkEnableOption;
+  inherit (lib.types) bool str float;
+  inherit (lib.nvim.types) mkPluginSetupOption;
+in {
+  options.vim.ui.modes-nvim = {
+    enable = mkEnableOption "modes.nvim's prismatic line decorations";
+
+    setupOpts = {
+      setCursorline = mkOption {
+        type = bool;
+        description = "Set a colored cursorline on current line";
+        default = false; # looks ugly, disabled by default
+      };
+
+      line_opacity = {
+        visual = mkOption {
+          type = float;
+          description = "Set opacity for cursorline and number background";
+          default = 0.0;
+        };
+      };
+
+      colors = mkPluginSetupOption "modes.nvim" {
+        copy = mkOption {
+          type = str;
+          description = "The #RRGGBB color code for the visual mode highlights";
+          default = "#f5c359";
+        };
+        delete = mkOption {
+          type = str;
+          description = "The #RRGGBB color code for the visual mode highlights";
+          default = "#c75c6a";
+        };
+        insert = mkOption {
+          type = str;
+          description = "The #RRGGBB color code for the visual mode highlights";
+          default = "#78ccc5";
+        };
+        visual = mkOption {
+          type = str;
+          description = "The #RRGGBB color code for the visual mode highlights";
+          default = "#9745be";
+        };
+      };
+    };
+  };
+}