[ANNOUNCE] GHC 8.8.1 and cabal-install version

Sat Sep 7 21:20:22 UTC 2019

Thanks for everybody's responses. I figured out that the following

cabal-install users should note that cabal-install-3.0 or later is required
for use with GHC 8.8.

means  I should have cabal-install-3.0 before installing 8.8.1. Once I did
that everything is fine.

Maybe configure should give an error if the user does not
have cabal-install-3.0?

Thanks
George

On Fri, Sep 6, 2019 at 1:48 PM Shayne Fletcher <shayne.fletcher at daml.com>
wrote:

> I got there by doing,
> ```
>   cabal v2-install --installdir=~/.cabal/bin alex
>   cabal v2-install --installdir=~/.cabal/bin happy
> ```
> and things seemed to be going smoothly enough after that.
>
> On Fri, Sep 6, 2019 at 12:08 PM Carter Schonwald <
> carter.schonwald at gmail.com> wrote:
>
>> V1 or v2 install?
>>
>> On Mon, Sep 2, 2019 at 11:42 AM George Colpitts <
>> george.colpitts at gmail.com> wrote:
>>
>>> https://www.haskell.org/ghc/blog/20190825-ghc-8.8.1-released.html says
>>>
>>> cabal-install users should note that cabal-install-3.0 or later is
>>> required for use with GHC 8.8.
>>>
>>> but this seems wrong or have I done something wrong?
>>>
>>> $ cabal install cabal-install
>>> cabal install cabal-install
>>> ...
>>>
>>> Resolving dependencies...
>>> cabal: Could not resolve dependencies:
>>> [__0] trying: cabal-install-3.0.0.0 (user goal)
>>> [__1] next goal: time (dependency of cabal-install)
>>> [__1] rejecting: time-1.9.3/installed-1.9... (conflict: cabal-install =>
>>> base>=4.8 && <4.13, time => base==4.13.0.0/installed-4.1...)
>>> [__1] trying: time-1.9.3
>>> [__2] next goal: stm (dependency of cabal-install)
>>> [__2] rejecting: stm-2.5.0.0/installed-2.5... (conflict: cabal-install =>
>>> base>=4.8 && <4.13, stm => base==4.13.0.0/installed-4.1...)
>>> [__2] trying: stm-2.5.0.0
>>> [__3] next goal: process (dependency of cabal-install)
>>> [__3] rejecting: process-1.6.5.1/installed-1.6... (conflict:
>>> cabal-install =>
>>> base>=4.8 && <4.13, process => base==4.13.0.0/installed-4.1...)
>>> [__3] trying: process-1.6.5.1
>>> [__4] next goal: pretty (dependency of cabal-install)
>>> [__4] rejecting: pretty-1.1.3.6/installed-1.1... (conflict:
>>> cabal-install =>
>>> base>=4.8 && <4.13, pretty => base==4.13.0.0/installed-4.1...)
>>> [__4] trying: pretty-1.1.3.6
>>> [__5] next goal: network (dependency of cabal-install)
>>> [__5] rejecting: network-3.1.0.1/installed-CeX... (conflict:
>>> cabal-install =>
>>> base>=4.8 && <4.13, network => base==4.13.0.0/installed-4.1...)
>>> [__5] trying: network-3.1.0.1
>>> [__6] trying: hackage-security-0.5.3.0 (dependency of cabal-install)
>>> [__7] next goal: template-haskell (dependency of hackage-security)
>>> [__7] rejecting: template-haskell-2.15.0.0/installed-2.1... (conflict:
>>> cabal-install => base>=4.8 && <4.13, template-haskell =>
>>> base==4.13.0.0/installed-4.1...)
>>> [__7] rejecting: template-haskell-2.15.0.0, template-haskell-2.14.0.0,
>>> template-haskell-2.13.0.0, template-haskell-2.12.0.0,
>>> template-haskell-2.11.1.0, template-haskell-2.11.0.0,
>>> template-haskell-2.10.0.0, template-haskell-2.9.0.0,
>>> template-haskell-2.8.0.0,
>>> template-haskell-2.7.0.0, template-haskell-2.6.0.0,
>>> template-haskell-2.5.0.0,
>>> template-haskell-2.4.0.1, template-haskell-2.4.0.0,
>>> template-haskell-2.3.0.1,
>>> template-haskell-2.3.0.0, template-haskell-2.2.0.0 (constraint from
>>> non-upgradeable package requires installed instance)
>>> [__7] fail (backjumping, conflict set: cabal-install, hackage-security,
>>> template-haskell)
>>> After searching the rest of the dependency tree exhaustively, these were
>>> the
>>> goals I've had most trouble fulfilling: base, cabal-install, directory,
>>> template-haskell, process, time, network, pretty, hackage-security,
>>> deepseq,
>>> HTTP, stm, cabal-install:lib
>>>
>>>
>>> On Mon, Aug 26, 2019 at 6:25 AM Ben Gamari <ben at well-typed.com> wrote:
>>>
>>>>
>>>> Hello everyone,
>>>>
>>>> The GHC team is pleased to announce the release candidate for GHC 8.8.1.
>>>> The source distribution, binary distributions, and documentation are
>>>> available at
>>>>
>>>>     https://downloads.haskell.org/ghc/8.8.1
>>>>
>>>> This release is the culmination of over 3000 commits by over one hundred
>>>> contributors and has several new features and numerous bug fixes
>>>> relative to GHC 8.6:
>>>>
>>>>  * Visible kind applications are now supported (GHC Proposal #15)
>>>>
>>>>  * Profiling now works correctly on 64-bit Windows (although still may
>>>>    be problematic on 32-bit Windows due to platform limitations; see
>>>>    #15934)
>>>>
>>>>  * A new code layout algorithm for amd64's native code generator
>>>>    significantly improving the runtime performance of some kernels
>>>>
>>>>  * The introduction of a late lambda-lifting pass which may reduce
>>>>    allocations significantly for some programs.
>>>>
>>>>  * Further work on Trees That Grow, enabling improved code re-use of the
>>>>    Haskell AST in tooling
>>>>
>>>>  * Users can write `forall` in more contexts (GHC Proposal #7)
>>>>
>>>>  * The pattern-match checker is now more precise in the presence of
>>>>    strict fields with uninhabited types.
>>>>
>>>>  * A comprehensive audit of GHC's memory ordering barriers has been
>>>>    performed, resulting in a number of fixes that should significantly
>>>>    improve the reliability of programs on architectures with
>>>>    weakly-ordered memory models (e.g. PowerPC, many ARM and AArch64
>>>>    implementations).
>>>>
>>>>  * A long-standing linker limitation rendering GHCi unusable with
>>>>    projects with cyclic symbol dependencies has been fixed (#13786)
>>>>
>>>>  * Further work on the Hadrian build system
>>>>
>>>>  * Countless miscellaneous bug-fixes
>>>>
>>>> Unfortunately, due to a build issue (#17108) found late in the release
>>>> process
>>>> i386 Windows builds are currently unavailable. These will be provided in
>>>> the coming weeks.
>>>>
>>>> As always, if anything looks amiss do let us know.
>>>>
>>>> Happy compiling!
>>>>
>>>> Cheers,
>>>>
>>>> - Ben
>>>>
>>>>
>>>> [1]
>>>> https://downloads.haskell.org/ghc/8.8.1/docs/html/users_guide/8.8.1-notes.html
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>
>
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> *Shayne Fletcher*
> Language Engineer */* +1 917 699 7663
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