[ANNOUNCE] Glasgow Haskell Compiler 8.10.1-rc1 released

George Colpitts george.colpitts at gmail.com
Sun Jan 26 14:58:31 UTC 2020

Thanks Ben, installed fine on my Mac running 10.14.6.

For the release notes I suggest we document
https://gitlab.haskell.org/ghc/ghc/issues/17341 which is associated with
https://github.com/haskell/cabal/issues/6262 and

I realize this will be controversial and may be rejected but I think the
current status is very confusing to new / inexperienced users so I felt I
should suggest it.

As I mentioned in 17341, can we add a milestone and priority to this
feature request?

Thanks again for everybody's work on GHC


On Sat, Jan 25, 2020 at 12:58 AM Ben Gamari <ben at well-typed.com> wrote:

> Hello all,
> The GHC team is happy to announce the availability of the first release
> candidate of GHC 8.10.1. Source and binary distributions are
> available at the usual place:
>     https://downloads.haskell.org/ghc/8.10.1-rc1/
> GHC 8.10.1 will bring 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
> This is the first and likely final release candidate. For a variety of
> reasons, it comes a few weeks later than the original schedule of
> release late December. However, besides a few core libraries
> book-keeping issues this candidate is believed to be in good condition
> for the final release. As such, the final 8.10.1 release will likely
> come in two weeks.
> 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`.
> In addition, we are still looking for any Alpine Linux to help diagnose
> the correctness issues in the Alpine binary distribution [1]. If you use
> Alpine any you can offer here would be greatly appreciated.
> Please do test this release and let us know if you encounter any other
> issues.
> Cheers,
> - Ben
> [1] https://gitlab.haskell.org/ghc/ghc/issues/17508
> [2] https://gitlab.haskell.org/ghc/ghc/issues/17418
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