lib: extract shared borderType

lib/types/default.nix

@@ -9,7 +9,7 @@
   typesCustom = import ./custom.nix {inherit lib;};
 in {
   inherit (typesDag) dagOf;
-  inherit (typesPlugin) pluginsOpt extraPluginType mkPluginSetupOption luaInline pluginType;
+  inherit (typesPlugin) pluginsOpt extraPluginType mkPluginSetupOption luaInline pluginType borderType;
   inherit (typesLanguage) diagnostics mkGrammarOption;
   inherit (typesCustom) anythingConcatLists char;
 }

lib/types/plugins.nix

@@ -51,9 +51,13 @@
       };
     };
   };
+
+  borderPresets = ["none" "single" "double" "rounded" "solid" "shadow"];
 in {
   inherit extraPluginType fromInputs pluginType;
 
+  borderType = either (enum borderPresets) (listOf str);
+
   pluginsOpt = {
     description,
     example,

modules/plugins/ui/borders/borders.nix

@@ -4,22 +4,24 @@
   ...
 }: let
   inherit (lib.options) mkOption mkEnableOption;
-  inherit (lib.lists) optionals;
+  inherit (lib.nvim.types) borderType;
-  inherit (lib.types) enum either listOf str;
 
   cfg = config.vim.ui.borders;
-
-  defaultStyles = ["none" "single" "double" "rounded"];
 in {
   options.vim.ui.borders = {
     enable = mkEnableOption "visible borders for most windows";
 
     globalStyle = mkOption {
-      type = either (enum defaultStyles) (listOf str);
+      type = borderType;
       default = "rounded";
       description = ''
         The global border style to use.
+
+        If a list is given, it should have a length of eight or any divisor of
+        eight. The array will specify the eight chars building up the border in
+        a clockwise fashion starting with the top-left corner.
       '';
+      example = ["╔" "═" "╗" "║" "╝" "═" "╚" "║"];
     };
 
     # TODO: make per-plugin borders configurable
@@ -28,7 +30,7 @@ in {
         enable = mkEnableOption "borders for the ${name} plugin" // {default = cfg.enable;};
 
         style = mkOption {
-          type = either (enum (defaultStyles ++ optionals (name != "which-key") ["shadow"])) (listOf str);
+          type = borderType;
           default = cfg.globalStyle;
           description = "The border style to use for the ${name} plugin";
         };

modules/plugins/ui/breadcrumbs/breadcrumbs.nix

@@ -6,7 +6,7 @@
   inherit (lib.options) mkOption mkEnableOption;
   inherit (lib.types) nullOr listOf enum bool str int either;
   inherit (lib.modules) mkRenamedOptionModule;
-  inherit (lib.nvim.types) mkPluginSetupOption;
+  inherit (lib.nvim.types) mkPluginSetupOption borderType;
   mkSimpleIconOption = default:
     mkOption {
       inherit default;
@@ -212,8 +212,7 @@ in {
           # position = {}
 
           border = mkOption {
-            # TODO: let this type accept a custom string
+            type = borderType;
-            type = either (enum ["single" "rounded" "double" "solid" "none"]) (listOf str);
             default = config.vim.ui.borders.globalStyle;
             description = "border style to use";
           };
@@ -236,8 +235,7 @@ in {
               */
 
               border = mkOption {
-                # TODO: let this type accept a custom string
+                type = borderType;
-                type = nullOr (either (enum ["single" "rounded" "double" "solid" "none"]) (listOf str));
                 default = config.vim.ui.borders.globalStyle;
                 description = "border style to use for the left section of Navbuddy UI";
               };
@@ -254,8 +252,7 @@ in {
               */
 
               border = mkOption {
-                # TODO: let this type accept a custom string
+                type = borderType;
-                type = nullOr (either (enum ["single" "rounded" "double" "solid" "none"]) (listOf str));
                 default = config.vim.ui.borders.globalStyle;
                 description = "border style to use for the middle section of Navbuddy UI";
               };
@@ -265,8 +262,7 @@ in {
             # there is no size option for the right section, it fills the remaining space
             right = {
               border = mkOption {
-                # TODO: let this type accept a custom string
+                type = borderType;
-                type = nullOr (either (enum ["single" "rounded" "double" "solid" "none"]) (listOf str));
                 default = config.vim.ui.borders.globalStyle;
                 description = "border style to use for the right section of Navbuddy UI";
               };

modules/plugins/visuals/fidget/fidget.nix

@@ -6,8 +6,8 @@
   inherit (lib.modules) mkRemovedOptionModule mkRenamedOptionModule;
   inherit (lib.options) mkEnableOption mkOption literalExpression;
   inherit (lib.strings) toUpper;
-  inherit (lib.types) int float bool str enum listOf attrsOf oneOf nullOr submodule either;
+  inherit (lib.types) int float bool str enum listOf attrsOf oneOf nullOr submodule;
-  inherit (lib.nvim.types) mkPluginSetupOption luaInline;
+  inherit (lib.nvim.types) mkPluginSetupOption luaInline borderType;
   inherit (lib.generators) mkLuaInline;
 in {
   imports = [
@@ -453,7 +453,7 @@ in {
           };
           border = mkOption {
             description = "Border style of the notification window";
-            type = either (enum ["none" "single" "double" "rounded" "solid" "shadow"]) (listOf str);
+            type = borderType;
             default =
               if config.vim.ui.borders.enable
               then config.vim.ui.borders.globalStyle