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+name:                async
+version:             2.2.4
+-- don't forget to update ./changelog.md!
+x-revision:          3
+synopsis:            Run IO operations asynchronously and wait for their results
+
+description:
+ This package provides a higher-level interface over
+ threads, in which an @Async a@ is a concurrent
+ thread that will eventually deliver a value of
+ type @a@.  The package provides ways to create
+ @Async@ computations, wait for their results, and
+ cancel them.
+ .
+ Using @Async@ 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
+license-file:        LICENSE
+author:              Simon Marlow
+maintainer:          Simon Marlow <marlowsd@gmail.com>
+copyright:           (c) Simon Marlow 2012
+category:            Concurrency
+build-type:          Simple
+cabal-version:       >=1.10
+homepage:            https://github.com/simonmar/async
+bug-reports:         https://github.com/simonmar/async/issues
+tested-with:
+    GHC == 9.6.1
+    GHC == 9.4.4
+    GHC == 9.2.7
+    GHC == 9.0.2
+    GHC == 8.10.7
+    GHC == 8.8.4
+    GHC == 8.6.5
+    GHC == 8.4.4
+    GHC == 8.2.2
+    GHC == 8.0.2
+    GHC == 7.10.3
+    GHC == 7.8.4
+    GHC == 7.6.3
+    GHC == 7.4.2
+    GHC == 7.2.2
+    GHC == 7.0.4
+
+extra-source-files:
+    changelog.md
+    bench/race.hs
+
+source-repository head
+    type: git
+    location: https://github.com/simonmar/async.git
+
+library
+    default-language:    Haskell2010
+    other-extensions:    CPP, MagicHash, RankNTypes, UnboxedTuples
+    if impl(ghc>=7.1)
+        other-extensions: Trustworthy
+    exposed-modules:     Control.Concurrent.Async
+    build-depends:       base     >= 4.3     && < 4.19,
+                         hashable >= 1.1.2.0 && < 1.5,
+                         stm      >= 2.2     && < 2.6
+
+test-suite test-async
+    default-language: Haskell2010
+    type:       exitcode-stdio-1.0
+    hs-source-dirs: test
+    main-is:    test-async.hs
+    build-depends: base,
+                   async,
+                   stm,
+                   test-framework,
+                   test-framework-hunit,
+                   HUnit
+
+flag bench
+    default: False
+
+executable concasync
+    if !flag(bench)
+       buildable: False
+    default-language: Haskell2010
+    hs-source-dirs: bench
+    main-is:    concasync.hs
+    build-depends: base, async, stm
+    ghc-options: -O2
+
+executable conccancel
+    if !flag(bench)
+       buildable: False
+    default-language: Haskell2010
+    hs-source-dirs: bench
+    main-is:    conccancel.hs
+    build-depends: base, async, stm
+    ghc-options: -O2 -threaded
+
+executable race
+    if !flag(bench)
+       buildable: False
+    default-language: Haskell2010
+    hs-source-dirs: bench
+    main-is:    race.hs
+    build-depends: base, async, stm
+    ghc-options: -O2 -threaded