[ANNOUNCE] Glasgow Haskell Compiler 8.10.1 released

Ben Gamari <[email protected]> Tue, 24 Mar 2020 11:02:01 -0400

Newsgroups	gmane.comp.lang.haskell.glasgow.user,gmane.comp.lang.haskell.ghc.devel,gmane.comp.lang.haskell.general
Message-ID	<[email protected]>

Hello all,

The GHC team is happy to announce the availability of GHC 8.10.1. Source
and binary distributions are available at the usual place:

    https://downloads.haskell.org/ghc/8.10.1/

GHC 8.10.1 brings a number of new features including:

 * The new UnliftedNewtypes extension allowing newtypes around unlifted
   types.

 * The new StandaloneKindSignatures extension allows users to give
   top-level kind signatures to type, type family, and class
   declarations.

 * A new warning, -Wderiving-defaults, to draw attention to ambiguous
   deriving clauses

 * A number of improvements in code generation, including changes

 * A new GHCi command, :instances, for listing the class instances
   available for a type.

 * An upgraded Windows toolchain lifting the MAX_PATH limitation

 * A new, low-latency garbage collector.

 * Improved support profiling, including support for sending profiler
   samples to the eventlog, allowing correlation between the profile and
   other program events

Note that at the moment we still require that macOS Catalina users
exempt the binary distribution from the notarization requirement by
running `xattr -cr .` on the unpacked tree before running `make install`.
This situation will hopefully be improved for GHC 8.10.2 with the
resolution of #17418 [1].

Cheers,

- Ben


[1] https://gitlab.haskell.org/ghc/ghc/issues/17418

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