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ghc-streams
ghc-streams.spec
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File ghc-streams.spec of Package ghc-streams
# # spec file for package ghc-streams # # Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany. # # All modifications and additions to the file contributed by third parties # remain the property of their copyright owners, unless otherwise agreed # upon. The license for this file, and modifications and additions to the # file, is the same license as for the pristine package itself (unless the # license for the pristine package is not an Open Source License, in which # case the license is the MIT License). An "Open Source License" is a # license that conforms to the Open Source Definition (Version 1.9) # published by the Open Source Initiative. # Please submit bugfixes or comments via http://bugs.opensuse.org/ # %global pkg_name streams Name: ghc-%{pkg_name} Version: 3.3 Release: 0 Summary: Various Haskell 2010 stream comonads License: BSD-3-Clause Group: Development/Libraries/Haskell URL: https://hackage.haskell.org/package/%{pkg_name} Source0: https://hackage.haskell.org/package/%{pkg_name}-%{version}/%{pkg_name}-%{version}.tar.gz BuildRequires: ghc-Cabal-devel BuildRequires: ghc-adjunctions-devel BuildRequires: ghc-comonad-devel BuildRequires: ghc-distributive-devel BuildRequires: ghc-rpm-macros BuildRequires: ghc-semigroupoids-devel BuildRequires: ghc-semigroups-devel %description Various Haskell 2010 stream comonads. * "Data.Stream.Future" provides a coinductive anti-causal stream, or non-empty 'ZipList'. The comonad provides access to only the tail of the stream. Like a conventional 'ZipList', this is /not/ a monad. > data Future a = Last a | a :< Future a * "Data.Stream.Future.Skew" provides a non-empty skew-binary random-access-list with the semantics of 'Data.Stream.Future'. As with "Data.Stream.Future" this stream is not a 'Monad', since the 'Applicative' instance zips streams of potentially differing lengths. The random-access-list structure provides a number of operations logarithmic access time, but makes 'Data.Stream.Future.Skew.cons' less productive. Where applicable "Data.Stream.Infinite.Skew" may be more efficient, due to a lazier and more efficient 'Applicative' instance. > * "Data.Stream.Infinite" provides a coinductive infinite anti-causal stream. The 'Comonad' provides access to the tail of the stream and the 'Applicative' zips streams together. Unlike 'Future', infinite stream form a 'Monad'. The monad diagonalizes the 'Stream', which is consistent with the behavior of the 'Applicative', and the view of a 'Stream' as a isomorphic to the reader monad from the natural numbers. Being infinite in length, there is no 'Alternative' instance. > data Stream a = a :< Stream a * "Data.Stream.Infinite.Skew" provides an infinite skew-binary random-access-list with the semantics of "Data.Stream.Infinite" Since every stream is infinite, the 'Applicative' instance can be considerably less strict than the corresponding instance for "Data.Stream.Future.Skew" and performs asymptotically better. > * "Data.Stream.Infinite.Functional.Zipper" provides a bi-infinite sequence, represented as a pure function with an accumulating parameter added to optimize moving the current focus. > data Zipper a = !Integer :~ (Integer -> a) * "Data.Stream.Supply" provides a comonadic supply of unique values, which are generated impurely as the tree is explored. %package devel Summary: Haskell %{pkg_name} library development files Group: Development/Libraries/Haskell Requires: %{name} = %{version}-%{release} Requires: ghc-compiler = %{ghc_version} Requires(post): ghc-compiler = %{ghc_version} Requires(postun): ghc-compiler = %{ghc_version} %description devel This package provides the Haskell %{pkg_name} library development files. %prep %setup -q -n %{pkg_name}-%{version} %build %ghc_lib_build %install %ghc_lib_install %post devel %ghc_pkg_recache %postun devel %ghc_pkg_recache %files -f %{name}.files %doc LICENSE %files devel -f %{name}-devel.files %doc CHANGELOG.markdown README %changelog
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