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@@ -1,144 +1,131 @@ =============================================== - The Glasgow Haskell Compiler -- version 8.0.1 + The Glasgow Haskell Compiler -- version 8.2.2 =============================================== -The GHC Team is pleased to announce a new super-major release of GHC. This is -the most significant GHC release in quite some time, including both a number -of major features and numerous bug fixes. These include, +The GHC Team is pleased to announce a new minor release of GHC. This release +builds on the performance and stability improvements of 8.2.1, fixing a variety +of correctness bugs, improving error messages, and making the compiler more +portable. - * The TypeInType extension, which unifies types and kinds, allowing GHC - to reason about kind equality and enabling promotion of GADTs to the type - level. +Notable bug-fixes include - * Support for record pattern synonyms + * A correctness issue resulting in segmentation faults in some + FFI-users (#13707, #14346) - * The -XDeriveAnyClass extension learned to derive instances for classes with - associated types + * A correctness issue resulting in undefined behavior in some programs + using STM (#14171) - * More reliable DWARF debugging information + * A bug which may have manifested in segmentation faults in + out-of-memory condition (#14329) - * Support for injective type families + * clearBit of Natural no longer bottoms (#13203) - * Applicative do-notation + * A specialisation bug resulting in exponential blowup of compilation + time in some specialisation-intensive programs (#14379) - * Support for wildcards in data and type family instances + * ghc-pkg now works even in environments with misconfigured NFS mounts + (#13945) - * Strict and StrictData extensions, allowing modules to be compiled with - strict-by-default bindings + * GHC again supports production of position-independent executables + (#13702) - * The DuplicateRecordFields extensions, allowing multiple datatypes to declare - the same record field names provided they are used unambiguously + * Better error messages around kind mismatches (#11198, #12373, #13530, + #13610) - * Support for implicit parameters providing light-weight callstacks and source - locations - - * User-defined error messages for type errors - - * A rewritten (and greatly improved) pattern exhaustiveness checker - - * GHCi can run the interpreter in a separate process, and the interpreter can - now run profiled code - - * A native code generator for powerpc64 and powerpc64le architectures - - * and more! - -A more thorough list of the changes in the release can be found in the release +A thorough list of the changes in the release can be found in the release notes, - http://haskell.org/ghc/docs/8.0.1/html/users_guide/release-8-0-1.html + https://haskell.org/ghc/docs/8.2.2/html/users_guide/8.2.2-notes.html How to get it ~~~~~~~~~~~~~ -The easy way is to go to the web page, which should be self-explanatory: +This release can be downloaded from + + https://www.haskell.org/ghc/download_ghc_8_2_2.html - http://www.haskell.org/ghc/ +For older versions see -We supply binary builds in the native package format for many -platforms, and the source distribution is available from the same -place. + https://www.haskell.org/ghc/ -Packages will appear as they are built - if the package for your -system isn't available yet, please try again later. +We supply binary builds in the native package format for many platforms, and the +source distribution is available from the same place. Background ~~~~~~~~~~ -Haskell is a standard lazy functional programming language. +Haskell is a standardized lazy functional programming language. -GHC is a state-of-the-art programming suite for Haskell. Included is -an optimising compiler generating efficient code for a variety of -platforms, together with an interactive system for convenient, quick -development. The distribution includes space and time profiling -facilities, a large collection of libraries, and support for various -language extensions, including concurrency, exceptions, and foreign -language interfaces. GHC is distributed under a BSD-style open source license. +GHC is a state-of-the-art programming suite for Haskell. Included is an +optimising compiler generating efficient code for a variety of platforms, +together with an interactive system for convenient, quick development. The +distribution includes space and time profiling facilities, a large collection of +libraries, and support for various language extensions, including concurrency, +exceptions, and foreign language interfaces. GHC is distributed under a +BSD-style open source license. A wide variety of Haskell related resources (tutorials, libraries, -specifications, documentation, compilers, interpreters, references, -contact information, links to research groups) are available from the -Haskell home page (see below). +specifications, documentation, compilers, interpreters, references, contact +information, links to research groups) are available from the Haskell home page +(see below). On-line GHC-related resources ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -Relevant URLs on the World-Wide Web: +Relevant URLs: -GHC home page http://www.haskell.org/ghc/ -GHC developers' home page http://ghc.haskell.org/trac/ghc/ -Haskell home page http://www.haskell.org/ +GHC home page https://www.haskell.org/ghc/ +GHC developers' home page https://ghc.haskell.org/trac/ghc/ +Haskell home page https://www.haskell.org/ Supported Platforms ~~~~~~~~~~~~~~~~~~~ -The list of platforms we support, and the people responsible for them, -is here: +The list of platforms we support, and the people responsible for them, is here: - http://ghc.haskell.org/trac/ghc/wiki/Contributors + https://ghc.haskell.org/trac/ghc/wiki/TeamGHC -Ports to other platforms are possible with varying degrees of -difficulty. The Building Guide describes how to go about porting to a -new platform: +Ports to other platforms are possible with varying degrees of difficulty. The +Building Guide describes how to go about porting to a new platform: - http://ghc.haskell.org/trac/ghc/wiki/Building + https://ghc.haskell.org/trac/ghc/wiki/Building Developers ~~~~~~~~~~ -We welcome new contributors. Instructions on accessing our source -code repository, and getting started with hacking on GHC, are -available from the GHC's developer's site run by Trac: +We welcome new contributors. Instructions on accessing our source code +repository, and getting started with hacking on GHC, are available from the +GHC's developer's site: - http://ghc.haskell.org/trac/ghc/ + https://ghc.haskell.org/trac/ghc/ Mailing lists ~~~~~~~~~~~~~ -We run mailing lists for GHC users and bug reports; to subscribe, use -the web interfaces at +We run mailing lists for GHC users and bug reports; to subscribe, use the web +interfaces at - http://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users - http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-tickets + https://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users + https://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-tickets There are several other haskell and ghc-related mailing lists on www.haskell.org; for the full list, see https://mail.haskell.org/cgi-bin/mailman/listinfo -Some GHC developers hang out on #haskell on IRC, too: +Many GHC developers hang out on #haskell on IRC: - http://www.haskell.org/haskellwiki/IRC_channel + https://www.haskell.org/haskellwiki/IRC_channel -Please report bugs using our bug tracking system. Instructions on -reporting bugs can be found here: +Please report bugs using our bug tracking system. Instructions on reporting bugs +can be found here: - http://www.haskell.org/ghc/reportabug + https://www.haskell.org/ghc/reportabug |