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%define ghc_version 8.6.4
%define hsc_name ghc
%define hsc_version %ghc_version
%define hsc_namever %hsc_name%hsc_version
%define h_pkg_name async
%define f_pkg_name async
%define pkg_libdir %_libdir/%hsc_name-%hsc_version/%h_pkg_name-%version

Name: %hsc_namever-%f_pkg_name
Version: 2.2.1
Release: alt1
License: BSD3
Packager: Evgeny Sinelnikov <sin at altlinux.org>
Group: Development/Haskell
Url: https://github.com/simonmar/async
Source: %name-%version.tar
Patch: %name-%version-%release.patch
Summary: Run IO operations asynchronously and wait for their results

BuildPreReq: haskell(abi) = %ghc_version
BuildPreReq: ghc%ghc_version-hashable


%description
Run IO operations asynchronously and wait for their results description:
This package provides a higher-level interface over threads, in which an
at Async a at  is a concurrent thread that will eventually deliver a value of
type  at a at . The package provides ways to create  at Async at  computations, wait
for their results, and cancel them.

Using  at Async at  is safer than using threads in two ways:

* When waiting for a thread to return a result, if the thread dies with an
exception then the caller must either re-throw the exception ('wait') or
handle it ('waitCatch'); the exception cannot be ignored.

* The API makes it possible to build a tree of threads that are
automatically killed when their parent dies (see 'withAsync'). license:
BSD3

%prep
%setup
%patch -p1

%build
%hs_configure2
%hs_build

%install
%hs_install
%hs_gen_filelist

%files -f %name-files.all

%changelog
…
Полный changelog можно просмотреть здесь