387d4c9137
OBS-URL: https://build.opensuse.org/package/show/devel:languages:haskell/ghc-bitvec?expand=0&rev=12
144 lines
4.9 KiB
RPMSpec
144 lines
4.9 KiB
RPMSpec
#
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# spec file for package ghc-bitvec
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#
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# Copyright (c) 2024 SUSE LLC
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#
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# All modifications and additions to the file contributed by third parties
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# remain the property of their copyright owners, unless otherwise agreed
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# upon. The license for this file, and modifications and additions to the
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# file, is the same license as for the pristine package itself (unless the
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# license for the pristine package is not an Open Source License, in which
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# case the license is the MIT License). An "Open Source License" is a
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# license that conforms to the Open Source Definition (Version 1.9)
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# published by the Open Source Initiative.
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# Please submit bugfixes or comments via https://bugs.opensuse.org/
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#
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%global pkg_name bitvec
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%global pkgver %{pkg_name}-%{version}
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%bcond_with tests
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Name: ghc-%{pkg_name}
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Version: 1.1.5.0
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Release: 0
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Summary: Space-efficient bit vectors
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License: BSD-3-Clause
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URL: https://hackage.haskell.org/package/%{pkg_name}
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Source0: https://hackage.haskell.org/package/%{pkg_name}-%{version}/%{pkg_name}-%{version}.tar.gz
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Source1: https://hackage.haskell.org/package/%{pkg_name}-%{version}/revision/2.cabal#/%{pkg_name}.cabal
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BuildRequires: ghc-Cabal-devel
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BuildRequires: ghc-base-devel
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BuildRequires: ghc-base-prof
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BuildRequires: ghc-bytestring-devel
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BuildRequires: ghc-bytestring-prof
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BuildRequires: ghc-deepseq-devel
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BuildRequires: ghc-deepseq-prof
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BuildRequires: ghc-primitive-devel
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BuildRequires: ghc-primitive-prof
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BuildRequires: ghc-rpm-macros
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BuildRequires: ghc-vector-devel
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BuildRequires: ghc-vector-prof
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ExcludeArch: %{ix86}
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%if %{with tests}
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BuildRequires: ghc-quickcheck-classes-base-devel
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BuildRequires: ghc-quickcheck-classes-base-prof
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BuildRequires: ghc-quickcheck-classes-devel
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BuildRequires: ghc-quickcheck-classes-prof
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BuildRequires: ghc-tasty-devel
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BuildRequires: ghc-tasty-prof
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BuildRequires: ghc-tasty-quickcheck-devel
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BuildRequires: ghc-tasty-quickcheck-prof
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%endif
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%description
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A newtype over 'Bool' with a better 'Vector' instance: 8x less memory, up to
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3500x faster.
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The <https://hackage.haskell.org/package/vector vector> package represents
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unboxed arrays of 'Bool's spending 1 byte (8 bits) per boolean. This library
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provides a newtype wrapper 'Bit' and a custom instance of an unboxed 'Vector',
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which packs bits densely, achieving an __8x smaller memory footprint.__ The
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performance stays mostly the same; the most significant degradation happens for
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random writes (up to 10% slower). On the other hand, for certain bulk bit
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operations 'Vector' 'Bit' is up to 3500x faster than 'Vector' 'Bool'.
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=== Thread safety
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* "Data.Bit" is faster, but writes and flips are not thread-safe. This is
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because naive updates are not atomic: they read the whole word from memory,
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then modify a bit, then write the whole word back. Concurrently modifying
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non-intersecting slices of the same underlying array may also lead to
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unexpected results, since they can share a word in memory. *
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"Data.Bit.ThreadSafe" is slower (usually 10-20%), but writes and flips are
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thread-safe. Additionally, concurrently modifying non-intersecting slices of
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the same underlying array works as expected. However, operations that affect
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multiple elements are not guaranteed to be atomic.
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=== Similar packages
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* <https://hackage.haskell.org/package/bv bv> and
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<https://hackage.haskell.org/package/bv-little bv-little> do not offer mutable
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vectors.
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* <https://hackage.haskell.org/package/array array> is memory-efficient for
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'Bool', but lacks a handy 'Vector' interface and is not thread-safe.
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%package devel
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Summary: Haskell %{pkg_name} library development files
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Requires: %{name} = %{version}-%{release}
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Requires: ghc-compiler = %{ghc_version}
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Requires(post): ghc-compiler = %{ghc_version}
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Requires(postun): ghc-compiler = %{ghc_version}
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%description devel
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This package provides the Haskell %{pkg_name} library development files.
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%package -n ghc-%{pkg_name}-doc
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Summary: Haskell %{pkg_name} library documentation
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Requires: ghc-filesystem
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BuildArch: noarch
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%description -n ghc-%{pkg_name}-doc
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This package provides the Haskell %{pkg_name} library documentation.
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%package -n ghc-%{pkg_name}-prof
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Summary: Haskell %{pkg_name} profiling library
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Requires: ghc-%{pkg_name}-devel = %{version}-%{release}
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Supplements: (ghc-%{pkg_name}-devel and ghc-prof)
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%description -n ghc-%{pkg_name}-prof
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This package provides the Haskell %{pkg_name} profiling library.
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%prep
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%autosetup -n %{pkg_name}-%{version}
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cp -p %{SOURCE1} %{pkg_name}.cabal
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%build
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%ghc_lib_build
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%install
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%ghc_lib_install
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%check
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%cabal_test
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%post devel
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%ghc_pkg_recache
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%postun devel
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%ghc_pkg_recache
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%files -f %{name}.files
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%license LICENSE
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%files devel -f %{name}-devel.files
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%doc README.md changelog.md
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%files -n ghc-%{pkg_name}-doc -f ghc-%{pkg_name}-doc.files
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%license LICENSE
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%files -n ghc-%{pkg_name}-prof -f ghc-%{pkg_name}-prof.files
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%changelog
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