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Diffstat (limited to 'dev-haskell/monad-control/metadata.xml')
-rw-r--r-- | dev-haskell/monad-control/metadata.xml | 37 |
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diff --git a/dev-haskell/monad-control/metadata.xml b/dev-haskell/monad-control/metadata.xml new file mode 100644 index 000000000000..da06fe160857 --- /dev/null +++ b/dev-haskell/monad-control/metadata.xml @@ -0,0 +1,37 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd"> +<pkgmetadata> + <herd>haskell</herd> + <longdescription> + This package defines the type class @MonadControlIO@, a subset of + @MonadIO@ into which generic control operations such as @catch@ can + be lifted from @IO@. Instances are based on monad transformers in + @MonadTransControl@, which includes all standard monad transformers + in the @transformers@ library except @ContT@. For convenience, it + provides a wrapped version of @Control.Exception@ with types + generalized from @IO@ to all monads in @MonadControlIO@. + + Note that this package is a rewrite of Anders Kaseorg's @monad-peel@ library. + The main difference is that this package provides CPS style + operators and exploits the @RankNTypes@ language extension to + simplify most definitions. + + The package includes a copy of the @monad-peel@ testsuite written by Anders Kaseorg. + The tests can be performed by using @cabal test@. + + The following @critertion@ based benchmark shows that @monad-control@ + is on average about 2.5 times faster than @monad-peel@: + + <https://github.com/basvandijk/bench-monad-peel-control> + </longdescription> + <use> + <flag name="instancest">If enabled this package will export + MonadBaseControl instances for the lazy and strict ST monad. If disabled these + instances are only exported when base >= 4.4. If enabled it is required that + the transformer-base package exports MonadBase instances for ST. It will do + this by default.</flag> + </use> + <upstream> + <remote-id type="github">basvandijk/monad-control</remote-id> + </upstream> +</pkgmetadata> |