diff --git a/src/Chart/Data.hs b/src/Chart/Data.hs
index a9022ee..0c30e3e 100644
--- a/src/Chart/Data.hs
+++ b/src/Chart/Data.hs
@@ -3,7 +3,7 @@
 
 -- | Data primitives and utilities
 --
--- Whilst the library makes use of <https://hackage.haskell.org/package/numhask numhask>, it does not re-export, to avoid clashes with Prelude, with the exception of 'zero', 'one', 'angle', 'norm' & 'abs'.
+-- Whilst the library makes use of <https://hackage.haskell.org/package/numhask numhask>, it does not re-export, to avoid clashes with Prelude, with the exception of 'zero', 'one', 'angle' & 'abs'.
 --
 -- 'Rect' and 'Point', from <https://hackage.haskell.org/package/numhask-space numhask-space>, make up the base elements of many chart primitives, and all of numhask-space is re-exported.
 module Chart.Data
@@ -17,14 +17,13 @@ module Chart.Data
 
     -- * NumHask Exports
 
-    --
-
     -- | Note that (+) and (*) from numhask are not actually re-exported.
     Multiplicative (one),
     Additive (zero),
     abs,
     angle,
     magnitude,
+
     -- * Re-exports
     module NumHask.Space,
   )
diff --git a/src/Chart/Examples.hs b/src/Chart/Examples.hs
index a6c978c..a62abda 100644
--- a/src/Chart/Examples.hs
+++ b/src/Chart/Examples.hs
@@ -50,7 +50,7 @@ import Data.Function
 import Data.Maybe
 import Data.String.Interpolate
 import Data.Text (Text)
-import qualified Data.Text as Text
+import Data.Text qualified as Text
 import Data.Time
 import Optics.Core
 import Prelude hiding (abs)
@@ -513,9 +513,10 @@ surfaceExample =
   mempty
     & #charts .~ named "surface" cs
     & #markupOptions .~ (defaultMarkupOptions & #cssOptions % #shapeRendering .~ UseCssCrisp)
+  where
     -- FIXME: surface legends are broken as.
     -- & #hudOptions % #legends .~ [(30,defaultLegendOptions & #content .~ [("", foldOf charts' $ surfaceLegendChart rangef (defaultSurfaceLegendOptions dark "text"))])]
-  where
+
     grain = Point 100 100
     r = one
     f = fst . bimap ((-1.0) *) (fmap ((-1.0) *)) . rosenbrock 1 10
diff --git a/src/Chart/Hud.hs b/src/Chart/Hud.hs
index 8306bff..f9c9c16 100644
--- a/src/Chart/Hud.hs
+++ b/src/Chart/Hud.hs
@@ -81,14 +81,14 @@ import Data.Bool
 import Data.Colour
 import Data.Foldable hiding (sum)
 import Data.FormatN
-import qualified Data.List as List
+import Data.List qualified as List
 import Data.Maybe
 import Data.Path
 import Data.Text (Text)
-import qualified Data.Text as Text
+import Data.Text qualified as Text
 import Data.Tuple
 import GHC.Generics hiding (to)
-import qualified NumHask.Prelude as NH
+import NumHask.Prelude qualified as NH
 import Optics.Core
 import Prelude
 
diff --git a/src/Chart/Markup.hs b/src/Chart/Markup.hs
index 8b6843f..31806ea 100644
--- a/src/Chart/Markup.hs
+++ b/src/Chart/Markup.hs
@@ -42,7 +42,7 @@ import Data.ByteString.Char8 (pack)
 import Data.Colour
 import Data.FormatN
 import Data.Map.Strict (Map)
-import qualified Data.Map.Strict as Map
+import Data.Map.Strict qualified as Map
 import Data.Maybe
 import Data.Path
 import Data.Path.Parser
@@ -475,7 +475,6 @@ cssPreferColorScheme _ PreferNormal = mempty
 -- > fillSwitch (color1, color2) "dark" "stuff"
 --
 -- ... will default to color1 for elements of the "stuff" class, but switch to color2 if "dark" mode is preferred by the user.
---
 fillSwitch :: (Colour, Colour) -> ByteString -> ByteString -> ByteString
 fillSwitch (colorNormal, colorPrefer) prefer item =
   [i|
diff --git a/src/Chart/Markup/Parser.hs b/src/Chart/Markup/Parser.hs
index 51b626b..08acfd9 100644
--- a/src/Chart/Markup/Parser.hs
+++ b/src/Chart/Markup/Parser.hs
@@ -49,7 +49,7 @@ import Chart.Markup
 import Data.ByteString (ByteString)
 import Data.String.Interpolate
 import FlatParse.Basic hiding (cut)
-import qualified FlatParse.Basic.Text as T
+import FlatParse.Basic.Text qualified as T
 import GHC.Generics
 import Prelude
 
diff --git a/src/Chart/Primitive.hs b/src/Chart/Primitive.hs
index fe08063..c514b82 100644
--- a/src/Chart/Primitive.hs
+++ b/src/Chart/Primitive.hs
@@ -61,7 +61,7 @@ import Data.Path
 import Data.Text (Text)
 import Data.Tree
 import GHC.Generics
-import qualified NumHask.Prelude as NH
+import NumHask.Prelude qualified as NH
 import Optics.Core
 import Prelude
 
diff --git a/src/Chart/Style.hs b/src/Chart/Style.hs
index 4524ca2..493c08c 100644
--- a/src/Chart/Style.hs
+++ b/src/Chart/Style.hs
@@ -48,13 +48,13 @@ where
 import Chart.Data
 import Data.ByteString (ByteString)
 import Data.Colour
-import qualified Data.List as List
+import Data.List qualified as List
 import Data.Maybe
 import Data.Path
 import Data.Path.Parser
 import Data.String
 import Data.Text (Text)
-import qualified Data.Text as Text
+import Data.Text qualified as Text
 import GHC.Generics
 import Optics.Core
 import Prelude
diff --git a/src/Data/Colour.hs b/src/Data/Colour.hs
index 85f58c1..608eb9c 100644
--- a/src/Data/Colour.hs
+++ b/src/Data/Colour.hs
@@ -71,7 +71,7 @@ module Data.Colour
 where
 
 import Chart.Data
-import qualified Data.Attoparsec.Text as A
+import Data.Attoparsec.Text qualified as A
 import Data.Bifunctor
 import Data.Bool (bool)
 import Data.ByteString (ByteString)
@@ -79,14 +79,14 @@ import Data.Char
 import Data.Either
 import Data.FormatN
 import Data.Functor.Rep
-import qualified Data.List as List
+import Data.List qualified as List
 import Data.String.Interpolate
 import Data.Text (Text, pack)
-import qualified Data.Text as Text
+import Data.Text qualified as Text
 import GHC.Exts
 import GHC.Generics hiding (prec)
 import Graphics.Color.Model as M hiding (LCH)
-import qualified Graphics.Color.Space as S
+import Graphics.Color.Space qualified as S
 import NumHask.Algebra.Metric
 import NumHask.Array.Fixed
 import Optics.Core
@@ -438,7 +438,7 @@ xy2ch' :: Iso' (Double, Double) (Double, Double)
 xy2ch' =
   iso
     (\(x, y) -> (magnitude (Point x y), 180 / pi * mod_ (angle (Point x y)) (2 * pi)))
-    (\(c, h) -> let (Point x y) = fmap (c*) (ray (pi / 180 * h)) in (x, y))
+    (\(c, h) -> let (Point x y) = fmap (c *) (ray (pi / 180 * h)) in (x, y))
 
 mod_ :: Double -> Double -> Double
 mod_ x d = x - fromIntegral (floor (x / d) :: Integer) * d
@@ -651,9 +651,9 @@ showSwatch label c =
 showSwatches :: Text -> Text -> [(Text, Colour)] -> Text
 showSwatches pref suff hs =
   [i|<div>
-#{pref}
-#{divs}
-#{suff}
+ #{pref}
+ #{divs}
+ #{suff}
 </div>
 |]
   where
diff --git a/src/Data/Path.hs b/src/Data/Path.hs
index 90f8b78..6a8ed27 100644
--- a/src/Data/Path.hs
+++ b/src/Data/Path.hs
@@ -43,10 +43,10 @@ module Data.Path
 where
 
 import Chart.Data
-import qualified Control.Foldl as L
+import Control.Foldl qualified as L
 import Control.Monad.State.Lazy
 import GHC.Generics
-import qualified Geom2D.CubicBezier as B
+import Geom2D.CubicBezier qualified as B
 import NumHask.Prelude
 
 -- $setup
@@ -343,9 +343,16 @@ quadPosition (QuadPolar start' end control) = QuadPosition start' end control'
 -- Point 0.9999999933333332 -0.33333333333333326
 quadBezier :: (FromInteger a, ExpField a) => QuadPosition a -> a -> Point a
 quadBezier (QuadPosition start' end control) theta =
-  (1 - theta) ^ 2 *| start'
-    + 2 * (1 - theta) * theta *| control
-    + theta ^ 2 *| end
+  (1 - theta)
+    ^ 2
+    *| start'
+    + 2
+    * (1 - theta)
+    * theta
+    *| control
+    + theta
+    ^ 2
+    *| end
 
 -- | QuadPosition turning points.
 --
@@ -429,10 +436,22 @@ cubicPosition (CubicPolar start' end control1 control2) = CubicPosition start' e
 -- Point 0.6767766952966369 1.2071067811865475
 cubicBezier :: (FromInteger a, TrigField a) => CubicPosition a -> a -> Point a
 cubicBezier (CubicPosition start' end control1 control2) theta =
-  (1 - theta) ^ 3 *| start'
-    + 3 * (1 - theta) ^ 2 * theta *| control1
-    + 3 * (1 - theta) * theta ^ 2 *| control2
-    + theta ^ 3 *| end
+  (1 - theta)
+    ^ 3
+    *| start'
+    + 3
+    * (1 - theta)
+    ^ 2
+    * theta
+    *| control1
+    + 3
+    * (1 - theta)
+    * theta
+    ^ 2
+    *| control2
+    + theta
+    ^ 3
+    *| end
 
 -- | Turning point positions for a CubicPosition (0,1 or 2)
 --
diff --git a/src/Data/Path/Parser.hs b/src/Data/Path/Parser.hs
index bd0b23f..b41b065 100644
--- a/src/Data/Path/Parser.hs
+++ b/src/Data/Path/Parser.hs
@@ -30,7 +30,7 @@ import Data.Text.Encoding (encodeUtf8)
 import FlatParse.Basic
 import GHC.Generics
 import GHC.OverloadedLabels
-import NumHask.Prelude hiding ((<|>), optional)
+import NumHask.Prelude hiding (optional, (<|>))
 import Optics.Core hiding ((<|))
 
 -- $parsing
diff --git a/test/test.hs b/test/test.hs
index 14d2e6a..8af56ec 100644
--- a/test/test.hs
+++ b/test/test.hs
@@ -7,11 +7,11 @@ module Main (main) where
 import Chart.Examples
 import Chart.Markup
 import Chart.Markup.Parser
-import qualified Data.ByteString as BS
+import Data.ByteString qualified as BS
 import Data.Foldable
 import Data.Maybe
 import Data.TreeDiff
-import qualified Data.TreeDiff.OMap as O
+import Data.TreeDiff.OMap qualified as O
 import FlatParse.Basic
 import GHC.Exts
 import Test.Tasty (TestTree, defaultMain, testGroup)