diff --git a/.gitignore b/.gitignore
index ce25bb8..5bf1410 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,3 +5,4 @@
 /generated-docs/
 /.psc*
 /.psa*
+/.spago/
\ No newline at end of file
diff --git a/bower.json b/bower.json
deleted file mode 100644
index 3e5d69d..0000000
--- a/bower.json
+++ /dev/null
@@ -1,23 +0,0 @@
-{
-  "name": "purescript-lenses",
-  "ignore": [
-    "**/.*",
-    "node_modules",
-    "bower_components",
-    "output"
-  ],
-  "dependencies": {
-    "purescript-prelude": "^4.0.1",
-    "purescript-console": "^4.1.0",
-    "purescript-effect": "^2.0.0",
-    "purescript-profunctor-lenses": "^4.0.0",
-    "purescript-colors": "^5.0.0",
-    "purescript-random": "^4.0.0",
-    "purescript-record-extra": "^1.0.0",
-    "purescript-foreign-object": "^1.0.0",
-    "purescript-generics-rep": "^6.0.0"
-  },
-  "devDependencies": {
-    "purescript-psci-support": "^4.0.0"
-  }
-}
diff --git a/packages.dhall b/packages.dhall
new file mode 100644
index 0000000..7596fd2
--- /dev/null
+++ b/packages.dhall
@@ -0,0 +1,5 @@
+let upstream =
+      https://github.com/purescript/package-sets/releases/download/psc-0.15.4-20221211/packages.dhall
+        sha256:d115f153861ffe27fafa4afa1d337d4fc5ae4969eee3427179b1b94ce3afa9b5
+
+in  upstream
diff --git a/spago.dhall b/spago.dhall
new file mode 100644
index 0000000..c06e600
--- /dev/null
+++ b/spago.dhall
@@ -0,0 +1,20 @@
+{ name = "lenses"
+, dependencies =
+  [ "arrays"
+  , "colors"
+  , "console"
+  , "effect"
+  , "either"
+  , "foldable-traversable"
+  , "integers"
+  , "maybe"
+  , "ordered-collections"
+  , "prelude"
+  , "profunctor"
+  , "profunctor-lenses"
+  , "tuples"
+  , "unfoldable"
+  ]
+, packages = ./packages.dhall
+, sources = [ "src/**/*.purs", "test/**/*.purs" ]
+}
diff --git a/src/SumType.purs b/src/SumType.purs
index 9a06d0c..53e5993 100644
--- a/src/SumType.purs
+++ b/src/SumType.purs
@@ -23,10 +23,9 @@ import Color (Color)
 import Color as Color
 
 import Data.Generic.Rep (class Generic)
-import Data.Generic.Rep.Eq as GEq
-import Data.Generic.Rep.Show as GShow
 import Data.Maybe (Maybe(..), maybe)
 import Data.Either (Either(..))
+import Data.Show.Generic (genericShow)
 import Data.Tuple (Tuple)
 import Data.Traversable (class Traversable)
 
@@ -256,21 +255,18 @@ _hslaSolid = prism' constructor focuser
 -- ... although Eq is only required for `only`.
 
 derive instance genericPercent :: Generic Percent _
-instance eqPercent :: Eq Percent where
-  eq = GEq.genericEq
+derive instance eqPercent :: Eq Percent
 instance showPercent :: Show Percent where
   show (Percent f) = "(" <> show f <> "%)"
 
 derive instance genericPoint :: Generic Point _
-instance eqPoint :: Eq Point where
-  eq = GEq.genericEq
+derive instance eqPoint :: Eq Point
 instance showPoint :: Show Point where
   show (Point x y) = "(" <> show x <> ", " <> show y <> ")"
 
 derive instance genericFill :: Generic Fill _
-instance eqFill :: Eq Fill where
-  eq = GEq.genericEq
+derive instance eqFill :: Eq Fill
 instance showFill :: Show Fill where
-  show x = GShow.genericShow x
+  show x = genericShow x
 
 
diff --git a/test/Main.purs b/test/Main.purs
new file mode 100644
index 0000000..f91f98c
--- /dev/null
+++ b/test/Main.purs
@@ -0,0 +1,11 @@
+module Test.Main where
+
+import Prelude
+
+import Effect (Effect)
+import Effect.Class.Console (log)
+
+main :: Effect Unit
+main = do
+  log "🍝"
+  log "You should add some tests."