Commit 0cee2525 authored by Ben Gamari's avatar Ben Gamari 🐢

Release 8.2.1

parent 11a5cc09
===============================================
The Glasgow Haskell Compiler -- version 8.0.1
The Glasgow Haskell Compiler -- version 8.2.1
===============================================
The GHC Team is pleased to announce a new super-major release of GHC. This is
the most significant GHC release in quite some time, including both a number
of major features and numerous bug fixes. These include,
The GHC Team is pleased to announce a new major release of GHC. The themes of this
release have been performance, stability, and consolidation. Consequently
cleanups can be seen throughout the compiler,
* The TypeInType extension, which unifies types and kinds, allowing GHC
to reason about kind equality and enabling promotion of GADTs to the type
level.
* Significant improvements in compiler performance
* Support for record pattern synonyms
* More robust support for levity polymorphism
* The -XDeriveAnyClass extension learned to derive instances for classes with
associated types
* Reliable DWARF debugging information
* More reliable DWARF debugging information
* Improved runtime system performance on NUMA systems
* Support for injective type families
* Retooling of the cost-center profiler, including support for live streaming
of profile data via the GHC event log
* Applicative do-notation
* Deterministic interface files
* Support for wildcards in data and type family instances
* More robust treatment of join points, enabling significantly better code
generation in many cases
* Strict and StrictData extensions, allowing modules to be compiled with
strict-by-default bindings
* Numerous improvements in robustness on Windows
* The DuplicateRecordFields extensions, allowing multiple datatypes to declare
the same record field names provided they are used unambiguously
* Resolution of over 500 tickets
* Support for implicit parameters providing light-weight callstacks and source
locations
In addition, there are a number of new features,
* User-defined error messages for type errors
* A new more type-safe Typeable mechanism
* A rewritten (and greatly improved) pattern exhaustiveness checker
* The long-awaited Backpack module system
* GHCi can run the interpreter in a separate process, and the interpreter can
now run profiled code
* Deriving strategies to disambiguate between GHC's various instance deriving
mechanisms
* A native code generator for powerpc64 and powerpc64le architectures
* Unboxed sums types, for efficient unpacked representation of sum data types
* and more!
* Compact regions, allowing better control over garbage collection with in the
presence of large heaps containing many long-lived objects.
* Colorful messages and caret diagnostics for more legible errors
* Automatic support for using the faster gold and lld linkers when available
A more thorough list of the changes in the release can be found in the release
notes,
http://haskell.org/ghc/docs/8.0.1/html/users_guide/release-8-0-1.html
http://haskell.org/ghc/docs/8.2.1/html/users_guide/release-8-2-1.html
How to get it
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......@@ -13,10 +13,10 @@ dnl
# see what flags are available. (Better yet, read the documentation!)
#
AC_INIT([The Glorious Glasgow Haskell Compilation System], [8.2.0], [glasgow-haskell-bugs@haskell.org], [ghc-AC_PACKAGE_VERSION])
AC_INIT([The Glorious Glasgow Haskell Compilation System], [8.2.1], [glasgow-haskell-bugs@haskell.org], [ghc-AC_PACKAGE_VERSION])
# Set this to YES for a released version, otherwise NO
: ${RELEASE=NO}
: ${RELEASE=YES}
# The primary version (e.g. 7.5, 7.4.1) is set in the AC_INIT line
# above. If this is not a released version, then we will append the
......
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