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Diffstat (limited to 'dev-haskell/semirings/metadata.xml')
| -rw-r--r-- | dev-haskell/semirings/metadata.xml | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/dev-haskell/semirings/metadata.xml b/dev-haskell/semirings/metadata.xml index 7695d99e80cf..937381521944 100644 --- a/dev-haskell/semirings/metadata.xml +++ b/dev-haskell/semirings/metadata.xml @@ -5,36 +5,4 @@ <email>haskell@gentoo.org</email> <name>Gentoo Haskell</name> </maintainer> - <use> - <flag name="hashable"> - Enisable the use of the `hashable` package. Disabling this may be useful - for accelerating builds in sandboxes for expert users. - Note: `-hashable` implies `-unordered-containers`, as we are necessarily - not able to supply those instances as well. - </flag> - <flag name="containers"> - Enable the use of the `containers` package. Disabling this may be useful - for accelerating builds in sandboxes for expert users. - </flag> - <flag name="unordered-containers"> - Enable the use of the `unordered-containers` package. Disabling this may - be useful for accelerating builds in sandboxes for expert users. - </flag> - </use> - <longdescription> - Haskellers are usually familiar with monoids and semigroups. A monoid has an appending operation `<>` (or `mappend`), - and an identity element, `mempty`. A semigroup has an appending `<>` operation, but does not require a `mempty` element. - - A Semiring has two appending operations, `plus` and `times`, and two respective identity elements, `zero` and `one`. - - More formally, a Semiring R is a set equipped with two binary relations `+` and `*`, such that: - - (R,+) is a commutative monoid with identity element 0, - - (R,*) is a monoid with identity element 1, - - (*) left and right distributes over addition, and - - multiplication by '0' annihilates R. - </longdescription> </pkgmetadata> |