[Haskell-cafe] [ANNOUNCE] GHC 8.2.1 available

Ben Gamari ben at smart-cactus.org
Wed Jul 26 14:15:00 UTC 2017

Wolfgang Jeltsch <wolfgang-it at jeltsch.info> writes:

> 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.
Yes, indeed these were oversights. They are fixed in the ghc-8.2 branch
and I will try to push newly generated documentation shortly.


- Ben
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