Hello everyone, Here's an addendum to the announcment as it ommitted an important detail:
GHC 8.6.1 is only guaranteed to work properly with tooling which uses lib:Cabal version 2.4.0.1 or later. As such, GHC 8.6.1 works best with `cabal-install` 2.4.0.0 or later; please upgrade to `cabal-install` 2.4.0.0 if you haven't already. Note that cabal-install 2.4 supports all GHC versions back till GHC 7.0.4 and we also strongly recommend to use the latest available stable release of `cabal` even with older GHC releases as bugfixes and improvements aren't always backported to older Cabal releases as well as to be able to benefit from recently added CABAL format features[8] (or be able to access package releases on Hackage[9] which rely on those features) which require recent enough versions of Cabal as well. Note that binaries aren't available on cabal's download page[1] yet. If you're on Ubuntu or Debian, you can get a compiled cabal-install 2.4 `.deb` package via Apt from - https://launchpad.net/~hvr/+archive/ubuntu/ghc or - http://downloads.haskell.org/debian/ respectively. Binary versions for macOS and Windows are also expected to become available via [2] and [3] soon (and also at [1]). In the meantime, if you already have GHC 7.10 or later (together with a compatible `cabal` executable) installed, you can easily install cabal 2.4 yourself from Hackage[9] by invoking cabal install cabal-install-2.4.0.0 and making sure that the resulting `cabal` executable is accessible via your $PATH; you can check with `cabal --version` which should emit something along the lines of $ cabal --version cabal-install version 2.4.0.0 compiled using version 2.4.0.1 of the Cabal library Finally, the Haskell Platform[4] release for GHC 8.6.1 should be available soon as well which provides yet another recommended "standard way to get GHC and related tools"[5] in a uniform way across multiple operating systems. See [4] and [5] for more details about the standard Haskell Platform distribution. [1]: https://www.haskell.org/cabal/download.html [2]: https://haskell.futurice.com/ [3]: https://hub.zhox.com/posts/chocolatey-introduction/ [4]: https://www.haskell.org/platform/ [5]: https://mail.haskell.org/pipermail/ghc-devs/2015-July/009379.html [6]: https://launchpad.net/~hvr/+archive/ubuntu/ghc [7]: http://downloads.haskell.org/debian/ [8]: https://cabal.readthedocs.io/en/latest/file-format-changelog.html [9]: http://hackage.haskell.org/ -- Herbert On 2018-09-21 at 20:57:02 -0400, Ben Gamari wrote: > Hello everyone, > > The GHC team is pleased to announce the availability of GHC 8.6.1, the > fourth major release in the GHC 8 series. The source distribution, binary > distributions, and documentation for this release are available at > > https://downloads.haskell.org/~ghc/8.6.1 > > The 8.6 release fixes over 400 bugs from the 8.4 series and introduces a > number of exciting features. These most notably include: > > * A new deriving mechanism, `deriving via`, providing a convenient way > for users to extend Haskell's typeclass deriving mechanism > > * Quantified constraints, allowing forall quantification in constraint > contexts > > * An early version of the GHCi `:doc` command > > * The `ghc-heap-view` package, allowing introspection into the > structure of GHC's heap > > * Valid hole fit hints, helping the user to find terms to fill typed > holes in their programs > > * The BlockArguments extension, allowing the `$` operator to be omitted > in some unambiguous contexts > > * An exciting new plugin mechanism, source plugins, allowing plugins to > inspect and modify a wide variety of compiler representations. > > * Improved recompilation checking when plugins are used > > * Significantly better handling of macOS linker command size limits, > avoiding linker errors while linking large projects > > * The next phase of the MonadFail proposal, enabling > -XMonadFailDesugaring by default > > A full list of the changes in this release can be found in the > release notes: > > > https://downloads.haskell.org/~ghc/8.6.1/docs/html/users_guide/8.6.1-notes.html > > Perhaps of equal importance, GHC 8.6 is the second major release made > under GHC's accelerated six-month release schedule and the first set of > binary distributions built primarily using our new continuous > integration scheme. While the final 8.6 release is around three weeks > later than initially scheduled due to late-breaking bug reports, we > expect that the 8.8 release schedule shouldn't be affected. > > Thanks to everyone who has contributed to developing, documenting, and > testing this release! > > As always, let us know if you encounter trouble. > > > How to get it > ~~~~~~~~~~~~~ > > The easy way is to go to the web page, which should be self-explanatory: > > https://www.haskell.org/ghc/ > > We supply binary builds in the native package format for many > platforms, and the source distribution is available from the same > place. > > Packages will appear as they are built - if the package for your > system isn't available yet, please try again later. > > > Background > ~~~~~~~~~~ > > Haskell is a standard 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. > > 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). > > > On-line GHC-related resources > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > Relevant URLs on the World-Wide Web: > > 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: > > https://ghc.haskell.org/trac/ghc/wiki/Contributors > > Ports to other platforms are possible with varying degrees of > difficulty. The Building Guide describes how to go about porting to a > new platform: > > 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: > > 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 > > 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: > > https://www.haskell.org/haskellwiki/IRC_channel > > Please report bugs using our bug tracking system. Instructions on > reporting bugs can be found here: > > https://www.haskell.org/ghc/reportabug _______________________________________________ Haskell mailing list Haskell@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/haskell
