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Instances for QuickCheck classes

License: BSD 3-Clause "New" or "Revised" License

Haskell 100.00%

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depressed-pho s9gf4ult jcristovao basvandijk wheresoftwaregoestodie norfairking nikita-volkov erikd edwardbetts

qc-instances's Issues

0.3.4 source tarball has files dated 2087

Please see the build log at http://hydra.nixos.org/build/7137163/nixlog/1/raw.

This means quickcheck-instances can't be installed on NixOS as cabal ends up reconfiguring at every step.

Include instances for `vector` and `scientific`

They seem to be in platform nowadays, so they fall under:

The goal is to supply QuickCheck instances for types provided by the Haskell Platform.

https://www.haskell.org/platform/contents.html

I can make a PR if the inclusion is ok?

Migrate to better CI scripts

I don't seem to be keeping up with generating compatible cabal-freeze-style constraint scripts, so maybe we should move to this sort of thing: https://github.com/hvr/multi-ghc-travis

Build failure with Quickcheck 2.8.2

Resolving dependencies...
Configuring quickcheck-instances-0.3.11...
Building quickcheck-instances-0.3.11...
Preprocessing library quickcheck-instances-0.3.11...
[2 of 2] Compiling Test.QuickCheck.Instances ( src/Test/QuickCheck/Instances.hs, dist/dist-sandbox-f92f5d90/build/Test/QuickCheck/Instances.o )

src/Test/QuickCheck/Instances.hs:135:10:
    Duplicate instance declarations:
      instance Arbitrary a => Arbitrary (IntMap.IntMap a)
        -- Defined at src/Test/QuickCheck/Instances.hs:135:10
      instance [safe] Arbitrary a => Arbitrary (IntMap.IntMap a)
        -- Defined in ‘Test.QuickCheck.Arbitrary’

src/Test/QuickCheck/Instances.hs:139:10:
    Duplicate instance declarations:
      instance CoArbitrary a => CoArbitrary (IntMap.IntMap a)
        -- Defined at src/Test/QuickCheck/Instances.hs:139:10
      instance [safe] CoArbitrary a => CoArbitrary (IntMap.IntMap a)
        -- Defined in ‘Test.QuickCheck.Arbitrary’

src/Test/QuickCheck/Instances.hs:142:10:
    Duplicate instance declarations:
      instance Arbitrary IntSet.IntSet
        -- Defined at src/Test/QuickCheck/Instances.hs:142:10
      instance [safe] Arbitrary IntSet.IntSet
        -- Defined in ‘Test.QuickCheck.Arbitrary’

src/Test/QuickCheck/Instances.hs:146:10:
    Duplicate instance declarations:
      instance CoArbitrary IntSet.IntSet
        -- Defined at src/Test/QuickCheck/Instances.hs:146:10
      instance [safe] CoArbitrary IntSet.IntSet
        -- Defined in ‘Test.QuickCheck.Arbitrary’

src/Test/QuickCheck/Instances.hs:149:10:
    Duplicate instance declarations:
      instance (Ord k, Arbitrary k, Arbitrary v) =>
               Arbitrary (Map.Map k v)
        -- Defined at src/Test/QuickCheck/Instances.hs:149:10
      instance [safe] (Ord k, Arbitrary k, Arbitrary v) =>
                      Arbitrary (Map.Map k v)
        -- Defined in ‘Test.QuickCheck.Arbitrary’

src/Test/QuickCheck/Instances.hs:153:10:
    Duplicate instance declarations:
      instance (CoArbitrary k, CoArbitrary v) =>
               CoArbitrary (Map.Map k v)
        -- Defined at src/Test/QuickCheck/Instances.hs:153:10
      instance [safe] (CoArbitrary k, CoArbitrary v) =>
                      CoArbitrary (Map.Map k v)
        -- Defined in ‘Test.QuickCheck.Arbitrary’

src/Test/QuickCheck/Instances.hs:156:10:
    Duplicate instance declarations:
      instance Arbitrary a => Arbitrary (Seq.Seq a)
        -- Defined at src/Test/QuickCheck/Instances.hs:156:10
      instance [safe] Arbitrary a => Arbitrary (Seq.Seq a)
        -- Defined in ‘Test.QuickCheck.Arbitrary’

src/Test/QuickCheck/Instances.hs:160:10:
    Duplicate instance declarations:
      instance CoArbitrary a => CoArbitrary (Seq.Seq a)
        -- Defined at src/Test/QuickCheck/Instances.hs:160:10
      instance [safe] CoArbitrary a => CoArbitrary (Seq.Seq a)
        -- Defined in ‘Test.QuickCheck.Arbitrary’

src/Test/QuickCheck/Instances.hs:163:10:
    Duplicate instance declarations:
      instance (Ord a, Arbitrary a) => Arbitrary (Set.Set a)
        -- Defined at src/Test/QuickCheck/Instances.hs:163:10
      instance [safe] (Ord a, Arbitrary a) => Arbitrary (Set.Set a)
        -- Defined in ‘Test.QuickCheck.Arbitrary’

src/Test/QuickCheck/Instances.hs:167:10:
    Duplicate instance declarations:
      instance CoArbitrary a => CoArbitrary (Set.Set a)
        -- Defined at src/Test/QuickCheck/Instances.hs:167:10
      instance [safe] CoArbitrary a => CoArbitrary (Set.Set a)
        -- Defined in ‘Test.QuickCheck.Arbitrary’
Failed to install quickcheck-instances-0.3.11

Add OverlappingInstances ?

Hello,

Thanks for sharing the module.

It is very useful but I find that I need different instances for some types.

I am wondering if you could add OverlappingInstances Pragma to allow users to override the instance, when the need arises. It is a pita to create a newtype just to override the Arbitrary instance.

Thanks
Joe

QuickCheck 2.7

quickcheck-instances conflicts with QuickCheck 2.7.3

Add support for QuickCheck 2.8

It is hopefully easy:

https://github.com/nick8325/quickcheck/blob/2.8/changelog

Module Test.QuickCheck.Instances collides with a module of the same name from checkers

From a users perspective this is a pain, esp. when using a global package database and GHCi. checkers was first, quickcheck-instances is more widely used. Not sure how to resolve this.

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