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| -rw-r--r-- | gnu/packages/haskell-xyz.scm | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/gnu/packages/haskell-xyz.scm b/gnu/packages/haskell-xyz.scm index 8291c7f083..8dc16f685b 100644 --- a/gnu/packages/haskell-xyz.scm +++ b/gnu/packages/haskell-xyz.scm @@ -140,3 +140,40 @@ types.") reading data types from @code{ByteString} and @code{Text}. It also includes efficient implementations for common data types.") (license license:bsd-3))) + +(define-public ghc-threads + (package + (name "ghc-threads") + (version "0.5.1.6") + (source + (origin + (method url-fetch) + (uri (string-append "https://hackage.haskell.org/package/" + "threads/threads-" version ".tar.gz")) + (sha256 + (base32 + "0bjnjhnq3km6xqk0fn1fgyz5xdw4h6lylbwwbcmkkfzwcz0c76hk")))) + (build-system haskell-build-system) + (native-inputs + `(("ghc-concurrent-extra" ,ghc-concurrent-extra) + ("ghc-hunit" ,ghc-hunit) + ("ghc-test-framework" ,ghc-test-framework) + ("ghc-test-framework-hunit" ,ghc-test-framework-hunit))) + (home-page "https://github.com/basvandijk/threads") + (synopsis "Fork threads and wait for their result") + (description "This package provides functions to fork threads and +wait for their result, whether it's an exception or a normal value. +Besides waiting for the termination of a single thread this package also +provides functions to wait for a group of threads to terminate. This +package is similar to the @code{threadmanager}, @code{async} and +@code{spawn} packages. The advantages of this package are: + +@itemize +@item Simpler API. +@item More efficient in both space and time. +@item No space-leak when forking a large number of threads. +@item Correct handling of asynchronous exceptions. +@item GHC specific functionality like @code{forkOn} and +@code{forkIOWithUnmask}. +@end itemize") + (license license:bsd-3))) |