[ANNOUNCE] GHC 9.6.1-alpha3 is now available

[George Colpitts]

Hi

I get a strange warning on MacOS when I do ./configure:

checking Xcode version... xcode-select: error: tool 'xcodebuild' requires
Xcode, but active developer directory '/Library/Developer/CommandLineTools'
is a command line tools instance
not found (too old?)


I also get a related strange warning when I do a compile:

ghc hello.hs
[1 of 2] Compiling Main             ( hello.hs, hello.o ) [Missing object
file]
[2 of 2] Linking hello [Objects changed]
ld: warning: directory not found for option
'-L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk/usr/lib'

I'm on macOS 13.2.1. I was previously on ghc 9.4.4.

Thanks
George


On Tue, Feb 14, 2023 at 9:39 AM Ben Gamari <ben at well-typed.com> wrote:

>
> The GHC team is very pleased to announce the availability of GHC
> 9.6.1-alpha3.
> As usual, binaries and source distributions are available at
> downloads.haskell.org:
>
>     https://downloads.haskell.org/ghc/9.6.1-alpha3/
>
> Beginning with GHC 9.6.1, GHC can be built as a cross-compiler to
> WebAssembly and JavaScript. This is an important step towards robust
> support for compiling Haskell to the Web, but there are a few caveats to
> be aware of in the 9.6 series:
>
>  - Both the Javascript and WebAssembly backends are still at an early
>    stage of development and are present in this release as a technology
> preview
>
>  - Using GHC as a cross-compiler is not as easy as we would like it to
>    be; in particular, there are challenges related to Template Haskell
>
>  - GHC is not yet run-time retargetable; a given GHC binary targets
>    exactly one platform, and both WebAssembly and JavaScript are considered
>    platforms for this purpose. Cross-compilers must be built from source by
>    their users
>
> We hope to lift all of these limitations in future releases.
>
> Additionally, 9.6.1 will include:
>
>  - Significant latency improvements in the non-moving garbage collector
>
>  - Efficient runtime support for delimited continuations
>
>  - Improvements in compiler error messages
>
>  - Numerous improvements in the compiler's memory usage
>
> See the [release notes] for a comprehensive accounting of changes in this
> release.
>
> As always, one can find a [migration guide] to aid in transitioning from
> older
> releases on the GHC Wiki. We have also recently started extending our
> release process to cover a wider set of Linux distributions. In
> particular, we now offer Rocky 8 and Ubuntu 20.04 binary distributions
> which cover RedHat-derivative and distributions using older `glibc`
> releases (namely 2.27), respectively.
>
> Please do give this release a try and open a [ticket] if you see anything
> amiss.
>
> Cheers,
>
> - Ben
>
>
> [ticket]: https://gitlab.haskell.org/ghc/ghc/issues/
> [migration guide]:
> https://gitlab.haskell.org/ghc/ghc/-/wikis/migration/9.6
> [release notes]:
> https://downloads.haskell.org/ghc/9.6.1-alpha3/docs/users_guide/9.6.1-notes.html
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
>
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