Re: [ANNOUNCE] GHC 8.8.1 and cabal-install version

V1 or v2 install?

On Mon, Sep 2, 2019 at 11:42 AM George Colpitts <[email protected]>
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 <[email protected]> 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
>> _______________________________________________
>> Glasgow-haskell-users mailing list
>> [email protected]
>> http://mail.haskell.org/cgi-bin/mailman/listinfo/glasgow-haskell-users
>>
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