[Haskell-cafe] [ANNOUNCE] GHC 8.2.1 available

Wolfgang Jeltsch wolfgang-it at jeltsch.info
Tue Jul 25 22:01:45 UTC 2017

Am Samstag, den 22.07.2017, 23:03 -0400 schrieb Ben Gamari:
> In addition, there are a number of new features,
>  * A new, more type-safe type reflection mechanism
>  * The long-awaited Backpack module system
>  * Deriving strategies to disambiguate between GHC's various instance
>    deriving mechanisms
>  * Unboxed sum types, for efficient unpacked representation of sum 
>    data types
>  * Compact regions, allowing better control over garbage collection
>    in the presence of large heaps containing many long-lived objects.
>  * Colorful messages and caret diagnostics for more legible errors
> A more thorough list of the changes in this release can be found in
> the release notes,
>   https://haskell.org/ghc/docs/8.2.1/docs/html/users_guide/8.2.1-notes.html

It seems that the release notes mention the new type reflection
mechanism und colorful messages only in the “Highlights” section, not in
the “Full details” section, and that they do not mention the Backpack
module system and unboxed sums at all.

All the best,

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