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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
<pkgmetadata>
<maintainer type="project">
<email>haskell@gentoo.org</email>
<name>Gentoo Haskell</name>
</maintainer>
<use>
<flag name="aeson">
Enable the use of the `aeson` package. This may be useful for
accelerating builds in sandboxes for expert users.
</flag>
<flag name="semigroupoids">
Enable the use of the `semigroupoids` package. This may be
useful for accelerating builds in sandboxes for expert users.
</flag>
<flag name="semirings">
Enable the use of the `semirings` package. This may be useful
for accelerating builds in sandboxes for expert users.
</flag>
<flag name="vector">
Enable the use of the `vector` package. This may be useful
for accelerating builds in sandboxes for expert users.
</flag>
<flag name="unary-laws">
Include infrastructure for testing class laws of unary type constructors.
</flag>
<flag name="binary-laws">
Include infrastructure for testing class laws of binary type constructors.
Disabling `unary-laws` while keeping `binary-laws` enabled is an unsupported
configuration.
</flag>
</use>
<longdescription>
This library provides QuickCheck properties to ensure
that typeclass instances adhere to the set of laws that
they are supposed to. There are other libraries that do
similar things, such as `genvalidity-hspec` and `checkers`.
This library differs from other solutions by not introducing
any new typeclasses that the user needs to learn.
/Note:/ on GHC < 8.5, this library uses the higher-kinded typeclasses
('Data.Functor.Classes.Show1', 'Data.Functor.Classes.Eq1', 'Data.Functor.Classes.Ord1', etc.),
but on GHC >= 8.5, it uses `-XQuantifiedConstraints` to express these
constraints more cleanly.
</longdescription>
</pkgmetadata>
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