diff --git a/plugins/by-name/copilot-chat/default.nix b/plugins/by-name/copilot-chat/default.nix
index ee35a248..f927aca0 100644
--- a/plugins/by-name/copilot-chat/default.nix
+++ b/plugins/by-name/copilot-chat/default.nix
@@ -33,7 +33,7 @@ lib.nixvim.plugins.mkNeovimPlugin {
       GPT model to use, 'gpt-3.5-turbo' or 'gpt-4'.
     '';
 
-    temperature = helpers.defaultNullOpts.mkNullableWithRaw (types.numbers.between 0.0 1.0) 0.1 ''
+    temperature = helpers.defaultNullOpts.mkProportion 0.1 ''
       GPT temperature.
     '';
 
diff --git a/plugins/by-name/copilot-lua/default.nix b/plugins/by-name/copilot-lua/default.nix
index 40e7c1bf..795e40b7 100644
--- a/plugins/by-name/copilot-lua/default.nix
+++ b/plugins/by-name/copilot-lua/default.nix
@@ -56,7 +56,7 @@ in
                   The panel position.
                 '';
 
-            ratio = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.4 ''
+            ratio = helpers.defaultNullOpts.mkProportion 0.4 ''
               The panel ratio.
             '';
           };
diff --git a/plugins/by-name/coverage/default.nix b/plugins/by-name/coverage/default.nix
index 605f001c..f430d848 100644
--- a/plugins/by-name/coverage/default.nix
+++ b/plugins/by-name/coverage/default.nix
@@ -183,13 +183,13 @@ in
     '';
 
     summary = {
-      widthPercentage =
-        helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.7
-          "Width of the pop-up window.";
+      widthPercentage = helpers.defaultNullOpts.mkProportion 0.7 ''
+        Width of the pop-up window.
+      '';
 
-      heightPercentage =
-        helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.5
-          "Height of the pop-up window.";
+      heightPercentage = helpers.defaultNullOpts.mkProportion 0.5 ''
+        Height of the pop-up window.
+      '';
 
       borders = mapAttrs (optionName: default: helpers.defaultNullOpts.mkStr default "") {
         topleft = "╭";
diff --git a/plugins/by-name/fidget/default.nix b/plugins/by-name/fidget/default.nix
index b31c678e..660d576c 100644
--- a/plugins/by-name/fidget/default.nix
+++ b/plugins/by-name/fidget/default.nix
@@ -546,9 +546,7 @@ in
       logger = {
         level = helpers.defaultNullOpts.mkLogLevel "warn" "Minimum logging level";
 
-        floatPrecision = helpers.defaultNullOpts.mkNullable (
-          with types; numbers.between 0.0 1.0
-        ) 1.0e-2 "Limit the number of decimals displayed for floats.";
+        floatPrecision = helpers.defaultNullOpts.mkProportion 1.0e-2 "Limit the number of decimals displayed for floats.";
 
         path =
           helpers.defaultNullOpts.mkStr
diff --git a/plugins/by-name/lspsaga/default.nix b/plugins/by-name/lspsaga/default.nix
index ca99307a..3e88acf6 100644
--- a/plugins/by-name/lspsaga/default.nix
+++ b/plugins/by-name/lspsaga/default.nix
@@ -86,11 +86,11 @@ in
       };
 
       hover = {
-        maxWidth = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.9 ''
+        maxWidth = helpers.defaultNullOpts.mkProportion 0.9 ''
           Defines float window width.
         '';
 
-        maxHeight = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.8 ''
+        maxHeight = helpers.defaultNullOpts.mkProportion 0.8 ''
           Defines float window height.
         '';
 
@@ -117,19 +117,19 @@ in
           Enable number shortcuts to execute code action quickly.
         '';
 
-        maxWidth = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.8 ''
+        maxWidth = helpers.defaultNullOpts.mkProportion 0.8 ''
           Diagnostic jump window max width.
         '';
 
-        maxHeight = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.6 ''
+        maxHeight = helpers.defaultNullOpts.mkProportion 0.6 ''
           Diagnostic jump window max height.
         '';
 
-        maxShowWidth = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.9 ''
+        maxShowWidth = helpers.defaultNullOpts.mkProportion 0.9 ''
           Show window max width when layout is float.
         '';
 
-        maxShowHeight = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.6 ''
+        maxShowHeight = helpers.defaultNullOpts.mkProportion 0.6 ''
           Show window max height when layout is float.
         '';
 
@@ -211,15 +211,15 @@ in
       };
 
       finder = {
-        maxHeight = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.5 ''
+        maxHeight = helpers.defaultNullOpts.mkProportion 0.5 ''
           `max_height` of the finder window (float layout).
         '';
 
-        leftWidth = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.3 ''
+        leftWidth = helpers.defaultNullOpts.mkProportion 0.3 ''
           Width of the left finder window (float layout).
         '';
 
-        rightWidth = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.3 ''
+        rightWidth = helpers.defaultNullOpts.mkProportion 0.3 ''
           Width of the right finder window (float layout).
         '';
 
@@ -279,11 +279,11 @@ in
       };
 
       definition = {
-        width = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.6 ''
+        width = helpers.defaultNullOpts.mkProportion 0.6 ''
           Defines float window width.
         '';
 
-        height = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.5 ''
+        height = helpers.defaultNullOpts.mkProportion 0.5 ''
           Defines float window height.
         '';
 
@@ -317,13 +317,9 @@ in
           Auto save file when the rename is done.
         '';
 
-        projectMaxWidth =
-          helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.5
-            "Width for the `project_replace` float window.";
+        projectMaxWidth = helpers.defaultNullOpts.mkProportion 0.5 "Width for the `project_replace` float window.";
 
-        projectMaxHeight =
-          helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.5
-            "Height for the `project_replace` float window.";
+        projectMaxHeight = helpers.defaultNullOpts.mkProportion 0.5 "Height for the `project_replace` float window.";
 
         keys = {
           quit = mkKeymapOption "<C-k>" "Quit rename window or `project_replace` window.";
@@ -383,11 +379,11 @@ in
               If set to float, above options will ignored.
             '';
 
-        maxHeight = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.5 ''
+        maxHeight = helpers.defaultNullOpts.mkProportion 0.5 ''
           Height of outline float layout.
         '';
 
-        leftWidth = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.3 ''
+        leftWidth = helpers.defaultNullOpts.mkProportion 0.3 ''
           Width of outline float layout left window.
         '';
 
diff --git a/plugins/by-name/neotest/options.nix b/plugins/by-name/neotest/options.nix
index 5838ea01..bb9bab43 100644
--- a/plugins/by-name/neotest/options.nix
+++ b/plugins/by-name/neotest/options.nix
@@ -96,11 +96,11 @@ in
   floating = {
     border = defaultNullOpts.mkStr "rounded" "Border style.";
 
-    max_height = defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.6 ''
+    max_height = defaultNullOpts.mkProportion 0.6 ''
       Max height of window as proportion of NeoVim window.
     '';
 
-    max_width = defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.6 ''
+    max_width = defaultNullOpts.mkProportion 0.6 ''
       Max width of window as proportion of NeoVim window.
     '';
 
diff --git a/plugins/by-name/twilight/default.nix b/plugins/by-name/twilight/default.nix
index 47796294..0cf897cd 100644
--- a/plugins/by-name/twilight/default.nix
+++ b/plugins/by-name/twilight/default.nix
@@ -14,7 +14,7 @@ lib.nixvim.plugins.mkNeovimPlugin {
 
   settingsOptions = {
     dimming = {
-      alpha = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.25 ''
+      alpha = helpers.defaultNullOpts.mkProportion 0.25 ''
         Amount of dimming.
       '';
 
diff --git a/plugins/by-name/zen-mode/default.nix b/plugins/by-name/zen-mode/default.nix
index 293a50c3..59f0865a 100644
--- a/plugins/by-name/zen-mode/default.nix
+++ b/plugins/by-name/zen-mode/default.nix
@@ -14,7 +14,7 @@ lib.nixvim.plugins.mkNeovimPlugin {
   # Optionally, explicitly declare some options. You don't have to.
   settingsOptions = {
     window = {
-      backdrop = helpers.defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.95 ''
+      backdrop = helpers.defaultNullOpts.mkProportion 0.95 ''
         Shade the backdrop of the Zen window.
         Set to 1 to keep the same as Normal.
       '';
diff --git a/plugins/colorschemes/catppuccin.nix b/plugins/colorschemes/catppuccin.nix
index a6b581f2..e9f8808d 100644
--- a/plugins/colorschemes/catppuccin.nix
+++ b/plugins/colorschemes/catppuccin.nix
@@ -164,7 +164,7 @@ lib.nixvim.plugins.mkNeovimPlugin {
           Sets the shade to apply to the inactive split or window or buffer.
         '';
 
-        percentage = defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0.15 ''
+        percentage = defaultNullOpts.mkProportion 0.15 ''
           percentage of the shade to apply to the inactive window, split or buffer.
         '';
       };
diff --git a/plugins/colorschemes/nightfox.nix b/plugins/colorschemes/nightfox.nix
index b8c542ae..b18012d8 100644
--- a/plugins/colorschemes/nightfox.nix
+++ b/plugins/colorschemes/nightfox.nix
@@ -133,7 +133,7 @@ lib.nixvim.plugins.mkNeovimPlugin {
           lib.mapAttrs
             (
               name: color:
-              defaultNullOpts.mkNullable (types.numbers.between 0.0 1.0) 0 ''
+              defaultNullOpts.mkProportion 0 ''
                 Severity [0, 1] for ${name} (${color}).
               ''
             )
diff --git a/plugins/colorschemes/tokyonight.nix b/plugins/colorschemes/tokyonight.nix
index 5128f925..70cdbbe0 100644
--- a/plugins/colorschemes/tokyonight.nix
+++ b/plugins/colorschemes/tokyonight.nix
@@ -118,7 +118,7 @@ lib.nixvim.plugins.mkNeovimPlugin {
           Set a darker background on sidebar-like windows.
         '';
 
-    day_brightness = defaultNullOpts.mkNullable (lib.types.numbers.between 0.0 1.0) 0.3 ''
+    day_brightness = defaultNullOpts.mkProportion 0.3 ''
       Adjusts the brightness of the colors of the **Day** style.
       Number between 0 and 1, from dull to vibrant colors.
     '';