Ondřej Súkup
6afcf25a85
OBS-URL: https://build.opensuse.org/package/show/devel:languages:haskell/ghc-atomic-write?expand=0&rev=6
116 lines
3.5 KiB
RPMSpec
116 lines
3.5 KiB
RPMSpec
#
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# spec file for package ghc-atomic-write
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#
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# Copyright (c) 2020 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 atomic-write
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%bcond_with tests
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Name: ghc-%{pkg_name}
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Version: 0.2.0.7
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Release: 0
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Summary: Atomically write to a file
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License: MIT
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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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BuildRequires: ghc-Cabal-devel
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BuildRequires: ghc-bytestring-devel
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BuildRequires: ghc-directory-devel
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BuildRequires: ghc-filepath-devel
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BuildRequires: ghc-rpm-macros
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BuildRequires: ghc-temporary-devel
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BuildRequires: ghc-text-devel
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BuildRequires: ghc-unix-compat-devel
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ExcludeArch: %{ix86}
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%if %{with tests}
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BuildRequires: ghc-hspec-devel
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%endif
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%description
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Atomically write to a file on POSIX-compliant systems while preserving
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permissions.
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On most Unix systems, `mv` is an atomic operation. This makes it simple to
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write to a file atomically just by using the mv operation. However, this will
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destroy the permissions on the original file. This library does the following
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to preserve permissions while atomically writing to a file:
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* If an original file exists, take those permissions and apply them to the temp
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file before `mv`ing the file into place.
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* If the original file does not exist, create a following with default
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permissions (based on the currently-active umask).
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This way, when the file is `mv`'ed into place, the permissions will be the ones
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held by the original file.
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This library is based on similar implementations found in common libraries in
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Ruby and Python:
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* <http://apidock.com/rails/File/atomic_write/class Ruby on Rails includes a
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similar method called atomic_write>
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*
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<https://github.com/chef/chef/blob/c4631816132fcfefaba3d123a1d0dfe8bc2866bb/lib/chef/file_content_management/deploy/mv_unix.rb#L23:L71
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Chef includes atomic update functionality>
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* <https://github.com/sashka/atomicfile There is a python library for
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atomically updating a file>
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To use `atomic-write`, import the module corresponding to the type you wish to
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write atomically, e.g., to write a (strict) ByteString atomically:
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> import System.AtomicWrite.Writer.ByteString
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Then you can use the atomicWriteFile function that accepts a `FilePath` and a
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`ByteString`, e.g.:
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> atomicWriteFile myFilePath myByteString.
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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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%prep
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%autosetup -n %{pkg_name}-%{version}
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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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%changelog
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