# # spec file for package ghc-random # # Copyright (c) 2024 SUSE LLC # # 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 https://bugs.opensuse.org/ # %global pkg_name random %global pkgver %{pkg_name}-%{version} %bcond_with tests Name: ghc-%{pkg_name} Version: 1.2.1.2 Release: 0 Summary: Pseudo-random number generation License: BSD-3-Clause 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-base-devel BuildRequires: ghc-base-prof BuildRequires: ghc-bytestring-devel BuildRequires: ghc-bytestring-prof BuildRequires: ghc-deepseq-devel BuildRequires: ghc-deepseq-prof BuildRequires: ghc-mtl-devel BuildRequires: ghc-mtl-prof BuildRequires: ghc-rpm-macros BuildRequires: ghc-splitmix-devel BuildRequires: ghc-splitmix-prof ExcludeArch: %{ix86} %if %{with tests} BuildRequires: ghc-containers-devel BuildRequires: ghc-containers-prof BuildRequires: ghc-doctest-devel BuildRequires: ghc-doctest-prof BuildRequires: ghc-smallcheck-devel BuildRequires: ghc-smallcheck-prof BuildRequires: ghc-stm-devel BuildRequires: ghc-stm-prof BuildRequires: ghc-tasty-devel BuildRequires: ghc-tasty-hunit-devel BuildRequires: ghc-tasty-hunit-prof BuildRequires: ghc-tasty-inspection-testing-devel BuildRequires: ghc-tasty-inspection-testing-prof BuildRequires: ghc-tasty-prof BuildRequires: ghc-tasty-smallcheck-devel BuildRequires: ghc-tasty-smallcheck-prof BuildRequires: ghc-transformers-devel BuildRequires: ghc-transformers-prof %endif %description This package provides basic pseudo-random number generation, including the ability to split random number generators. == "System.Random": pure pseudo-random number interface In pure code, use 'System.Random.uniform' and 'System.Random.uniformR' from "System.Random" to generate pseudo-random numbers with a pure pseudo-random number generator like 'System.Random.StdGen'. As an example, here is how you can simulate rolls of a six-sided die using 'System.Random.uniformR': >>> let roll = uniformR (1, 6) :: RandomGen g => g -> (Word, g) >>> let rolls = unfoldr (Just . roll) :: RandomGen g => g -> [Word] >>> let pureGen = mkStdGen 42 >>> take 10 (rolls pureGen) :: [Word] [1,1,3,2,4,5,3,4,6,2] See "System.Random" for more details. == "System.Random.Stateful": monadic pseudo-random number interface In monadic code, use 'System.Random.Stateful.uniformM' and 'System.Random.Stateful.uniformRM' from "System.Random.Stateful" to generate pseudo-random numbers with a monadic pseudo-random number generator, or using a monadic adapter. As an example, here is how you can simulate rolls of a six-sided die using 'System.Random.Stateful.uniformRM': >>> let rollM = uniformRM (1, 6) :: StatefulGen g m => g -> m Word >>> let pureGen = mkStdGen 42 >>> runStateGen_ pureGen (replicateM 10 . rollM) :: [Word] [1,1,3,2,4,5,3,4,6,2] The monadic adapter 'System.Random.Stateful.runStateGen_' is used here to lift the pure pseudo-random number generator 'pureGen' into the 'System.Random.Stateful.StatefulGen' context. The monadic interface can also be used with existing monadic pseudo-random number generators. In this example, we use the one provided in the package: >>> import System.Random.MWC as MWC >>> let rollM = uniformRM (1, 6) :: StatefulGen g m => g -> m Word >>> monadicGen <- MWC.create >>> replicateM 10 (rollM monadicGen) :: IO [Word] [2,3,6,6,4,4,3,1,5,4] See "System.Random.Stateful" for more details. %package devel Summary: Haskell %{pkg_name} library development files 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. %package -n ghc-%{pkg_name}-doc Summary: Haskell %{pkg_name} library documentation Requires: ghc-filesystem BuildArch: noarch %description -n ghc-%{pkg_name}-doc This package provides the Haskell %{pkg_name} library documentation. %package -n ghc-%{pkg_name}-prof Summary: Haskell %{pkg_name} profiling library Requires: ghc-%{pkg_name}-devel = %{version}-%{release} Supplements: (ghc-%{pkg_name}-devel and ghc-prof) %description -n ghc-%{pkg_name}-prof This package provides the Haskell %{pkg_name} profiling library. %prep %autosetup -n %{pkg_name}-%{version} %build %ghc_lib_build %install %ghc_lib_install %check %cabal_test %post devel %ghc_pkg_recache %postun devel %ghc_pkg_recache %files -f %{name}.files %license LICENSE %files devel -f %{name}-devel.files %doc CHANGELOG.md README.md %files -n ghc-%{pkg_name}-doc -f ghc-%{pkg_name}-doc.files %license LICENSE %files -n ghc-%{pkg_name}-prof -f ghc-%{pkg_name}-prof.files %changelog