diff --git a/package.yaml b/package.yaml
index e247398..336b741 100644
--- a/package.yaml
+++ b/package.yaml
@@ -23,14 +23,13 @@ default-extensions:
   - ImportQualifiedPost
   - NoImplicitPrelude
   - StandaloneKindSignatures
-  - RoleAnnotations
+  - RoleAnnotations         
 
 dependencies:
   - base
   - containers
   - text
   - vector
-  - QuickCheck
 
 ghc-options:
 - -Weverything
diff --git a/scalie.cabal b/scalie.cabal
index 9e834db..b67faef 100644
--- a/scalie.cabal
+++ b/scalie.cabal
@@ -37,8 +37,7 @@ library
       RoleAnnotations
   ghc-options: -Weverything -Wno-unsafe
   build-depends:
-      QuickCheck
-    , base
+      base
     , containers
     , text
     , vector
@@ -58,8 +57,7 @@ executable scalie-exe
       RoleAnnotations
   ghc-options: -Weverything -Wno-unsafe -threaded -rtsopts -with-rtsopts=-N
   build-depends:
-      QuickCheck
-    , base
+      base
     , containers
     , scalie
     , text
@@ -70,8 +68,6 @@ test-suite scalie-test
   type: exitcode-stdio-1.0
   main-is: Spec.hs
   other-modules:
-      Test.Data.Map.Implicit
-      Test.QuickCheck.Roundtrip
       Paths_scalie
   hs-source-dirs:
       test
@@ -83,8 +79,7 @@ test-suite scalie-test
       RoleAnnotations
   ghc-options: -Weverything -Wno-unsafe -threaded -rtsopts -with-rtsopts=-N
   build-depends:
-      QuickCheck
-    , base
+      base
     , containers
     , scalie
     , text
diff --git a/src/Data/Map/Implicit.hs b/src/Data/Map/Implicit.hs
index 3cbc43f..ac0d459 100644
--- a/src/Data/Map/Implicit.hs
+++ b/src/Data/Map/Implicit.hs
@@ -2,8 +2,7 @@
 {-# LANGUAGE TypeFamilies #-} -- for KeyType
 {-# LANGUAGE FlexibleContexts #-} -- use non type-variable argument in instance head
 {-# LANGUAGE UndecidableInstances #-} -- use type family in instance head
-{-# LANGUAGE InstanceSigs #-} -- type signature in Show and Read instance
-{-# LANGUAGE StandaloneDeriving #-} -- derive Eq
+{-# LANGUAGE InstanceSigs #-}
 -- | A Map that derives the keys for the mapping from the items.
 
 module Data.Map.Implicit (ImplicitMap(), get, ImplicitKeyOf(..), empty) where
@@ -15,46 +14,26 @@ import Control.Category ((.), Category (id))
 import Data.Map qualified as Map
 import Text.Read (Read (readPrec), ReadPrec)
 import Data.List qualified as List
-import Control.Arrow (Arrow ((&&&)), (>>>))
+import Control.Arrow (Arrow ((&&&)))
 import Data.Functor ((<$>))
 import Data.Ord (Ord)
-import Data.Eq (Eq)
-import Test.QuickCheck.Arbitrary (Arbitrary (arbitrary))
-import Test.QuickCheck.Gen (Gen)
-
--- | This map will use the 'ImplicitKeyOf' class to compute the keys of the values.
 
 type ImplicitMap :: Type -> Type
 type role ImplicitMap nominal
 newtype ImplicitMap v = ImplicitMap { get :: Map (KeyType v) v }
 
-deriving stock instance (Eq v, Eq (KeyType v)) => Eq (ImplicitMap v)
-
-instance (Show v) => Show (ImplicitMap v) where
-  -- Serialize via the list of elements to avoid breaking invariants help by the map
-  show :: ImplicitMap v -> String
-  show = show . ImplicitMapElems . Map.elems . get
-
-instance (Read v, ImplicitKeyOf v, Ord (KeyType v)) => Read (ImplicitMap v) where
-  -- Serialize via the list of elements to avoid breaking invariants help by the map
-  readPrec :: ReadPrec (ImplicitMap v)
-  readPrec = ImplicitMap . Map.fromList . List.map (keyOf &&& id) . (\(ImplicitMapElems es) -> es) <$> readPrec
-
-instance (Arbitrary v, ImplicitKeyOf v, Ord (KeyType v)) => Arbitrary (ImplicitMap v) where
-  arbitrary :: Gen (ImplicitMap v)
-  arbitrary = fromList . (\(ImplicitMapElems es) -> es) <$> arbitrary
-
-
--- | This is my helper type for the Show and Read instances of 'ImplicitMap'
-
 type ImplicitMapElems :: Type -> Type
 type role ImplicitMapElems representational
 newtype ImplicitMapElems v = ImplicitMapElems [v]
   deriving stock (Show, Read)
 
-instance (Arbitrary v) => Arbitrary (ImplicitMapElems v) where
-  arbitrary :: Gen (ImplicitMapElems v)
-  arbitrary = ImplicitMapElems <$> arbitrary
+instance (Show v) => Show (ImplicitMap v) where
+  show :: ImplicitMap v -> String
+  show = show . ImplicitMapElems . Map.elems . get
+
+instance (Read v, ImplicitKeyOf v, Ord (KeyType v)) => Read (ImplicitMap v) where
+  readPrec :: ReadPrec (ImplicitMap v)
+  readPrec = ImplicitMap . Map.fromList . List.map (keyOf &&& id) . (\(ImplicitMapElems es) -> es) <$> readPrec
 
 type ImplicitKeyOf :: Type -> Constraint
 class ImplicitKeyOf v where
@@ -63,8 +42,3 @@ class ImplicitKeyOf v where
 
 empty :: ImplicitMap v
 empty = ImplicitMap Map.empty
-
-fromList :: (ImplicitKeyOf v, Ord (KeyType v)) => [v] -> ImplicitMap v
-fromList = List.map (keyOf &&& id)
-  >>> Map.fromList
-  >>> ImplicitMap
diff --git a/src/Language/Scalie/Ast/Definition.hs b/src/Language/Scalie/Ast/Definition.hs
index 7ebc156..9e6d6f8 100644
--- a/src/Language/Scalie/Ast/Definition.hs
+++ b/src/Language/Scalie/Ast/Definition.hs
@@ -14,14 +14,6 @@ import Language.Scalie.Domain.Type qualified as Scalie.Domain
 import Language.Scalie.Ast.Expression (Expression)
 import Text.Show (Show)
 import Text.Read (Read)
-import Data.Eq (Eq)
-import Test.QuickCheck.Arbitrary (Arbitrary (arbitrary))
-import Test.QuickCheck.Gen (Gen)
-import Control.Applicative (Applicative((<*>)), (<$>))
-import Data.Text qualified as Text
-import Control.Category (Category((.)))
-import Test.QuickCheck.Modifiers (UnicodeString(getUnicodeString))
-import Data.Functor (Functor)
 
 -- | The definition of a value or a function (which is also a value)
 --
@@ -45,7 +37,7 @@ type role Definition nominal
 data Definition f = Definition
   { signature   :: f Scalie.Domain.Type
   -- ^ What is the type
-  , name        :: f Text
+  , name        :: f Text 
   -- ^ Which name can be used to refer to this definition
   , body        :: f Expression
   -- ^ What needs to be evaluated to get the value
@@ -53,17 +45,9 @@ data Definition f = Definition
 
 deriving stock instance (Show (f Expression), Show (f Scalie.Domain.Type), Show (f Text)) => Show (Definition f)
 deriving stock instance (Read (f Expression), Read (f Scalie.Domain.Type), Read (f Text)) => Read (Definition f)
-deriving stock instance (Eq (f Expression)  , Eq (f Scalie.Domain.Type)  , Eq (f Text))   => Eq (Definition f)
 
 instance ImplicitKeyOf (Definition f) where
   type KeyType (Definition f) = f Text
   keyOf :: Definition f -> KeyType (Definition f)
   keyOf = name
 
-instance (Functor f, Arbitrary (f UnicodeString), Arbitrary (f Scalie.Domain.Type), Arbitrary (f Expression)) => Arbitrary (Definition f) where
-  arbitrary :: Gen (Definition f)
-  arbitrary = Definition
-    <$> arbitrary
-    <*> ((Text.pack . getUnicodeString <$>) <$> arbitrary)
-    <*> arbitrary
-
diff --git a/src/Language/Scalie/Ast/Expression.hs b/src/Language/Scalie/Ast/Expression.hs
index 8ecf68e..09ef3b3 100644
--- a/src/Language/Scalie/Ast/Expression.hs
+++ b/src/Language/Scalie/Ast/Expression.hs
@@ -1,23 +1,12 @@
 {-# LANGUAGE Safe #-}
-{-# LANGUAGE InstanceSigs #-}
 module Language.Scalie.Ast.Expression (Expression(..)) where
 
 import Prelude (Integer)
 import Data.Kind (Type)
 import Text.Show (Show)
 import Text.Read (Read)
-import Data.Eq (Eq)
-import Test.QuickCheck (Arbitrary (arbitrary), Gen, oneof)
-import Data.Functor ((<$>))
 
 type Expression :: Type
 data Expression
   = RawInt Integer
-  deriving stock (Show, Read, Eq)
-
-instance Arbitrary Expression where
-  arbitrary :: Gen Expression
-  arbitrary = oneof
-    [ RawInt <$> arbitrary
-    ]
-
+  deriving stock (Show, Read)
diff --git a/src/Language/Scalie/Domain/Type.hs b/src/Language/Scalie/Domain/Type.hs
index 92f9f87..bf54b2d 100644
--- a/src/Language/Scalie/Domain/Type.hs
+++ b/src/Language/Scalie/Domain/Type.hs
@@ -1,20 +1,12 @@
 {-# LANGUAGE Safe #-}
-{-# LANGUAGE InstanceSigs #-} -- function signature in instances
 module Language.Scalie.Domain.Type (Type(..)) where
 
 import Data.Kind qualified
 import Text.Show (Show)
 import Text.Read (Read)
-import Data.Eq (Eq)
-import Test.QuickCheck (Arbitrary (arbitrary), Gen, oneof)
-import Control.Applicative (Applicative(pure))
 
 type Type :: Data.Kind.Type
 data Type
   = RawInt
-  deriving stock (Show, Read, Eq)
-
-instance Arbitrary Type where
-  arbitrary :: Gen Type
-  arbitrary = oneof [ pure RawInt ]
+  deriving stock (Show, Read)
 
diff --git a/test/Spec.hs b/test/Spec.hs
index 0b0fab7..cd4753f 100644
--- a/test/Spec.hs
+++ b/test/Spec.hs
@@ -1,9 +1,2 @@
-{-# LANGUAGE Unsafe #-} -- unsafe: Uses functions imported from unsafe modules
-import System.IO (IO)
-import Control.Applicative (pure)
-import Test.Data.Map.Implicit qualified
-
 main :: IO ()
-main = do
-  _ <- Test.Data.Map.Implicit.runTests
-  pure ()
+main = putStrLn "Test suite not yet implemented"
diff --git a/test/Test/Data/Map/Implicit.hs b/test/Test/Data/Map/Implicit.hs
deleted file mode 100644
index 2b89341..0000000
--- a/test/Test/Data/Map/Implicit.hs
+++ /dev/null
@@ -1,27 +0,0 @@
-{-# LANGUAGE Unsafe #-} -- unsafe: I am using TemplateHaskell from a dependency
-{-# LANGUAGE TemplateHaskell #-}
-{-# LANGUAGE TypeApplications #-}
-module Test.Data.Map.Implicit (prop_readShowIdentityRoundtrip, prop_readShowMaybeRoundtrip, runTests) where
-import Test.QuickCheck.Roundtrip (roundtrips)
-import Text.Show (show)
-import Text.Read (read)
-import Data.Map.Implicit (ImplicitMap)
-import Data.Bool (Bool)
-import Language.Scalie.Ast.Definition (Definition)
-import Data.Functor.Identity (Identity)
-import Test.QuickCheck.All (quickCheckAll)
-import System.IO (IO)
-import Control.Applicative (pure)
-import Data.Maybe (Maybe)
-
--- | This is testworthy since I have somehow hand-hacked the read/show de/serialization of 'ImplicitMap'
-
-prop_readShowIdentityRoundtrip :: ImplicitMap (Definition Identity) -> Bool
-prop_readShowIdentityRoundtrip = roundtrips read show
-
-prop_readShowMaybeRoundtrip :: ImplicitMap (Definition Maybe) -> Bool
-prop_readShowMaybeRoundtrip = roundtrips read show
-
-pure []
-runTests :: IO Bool
-runTests = $quickCheckAll
diff --git a/test/Test/QuickCheck/Roundtrip.hs b/test/Test/QuickCheck/Roundtrip.hs
deleted file mode 100644
index 0ae6093..0000000
--- a/test/Test/QuickCheck/Roundtrip.hs
+++ /dev/null
@@ -1,7 +0,0 @@
-{-# LANGUAGE Safe #-}
-module Test.QuickCheck.Roundtrip (roundtrips) where
-import Data.Eq ((==), Eq)
-import Data.Bool (Bool)
-
-roundtrips :: Eq t1 => (t2 -> t1) -> (t1 -> t2) -> t1 -> Bool
-roundtrips back forth x = x == back (forth x)