From george.colpitts at gmail.com  Sun Jul  1 18:39:41 2018
From: george.colpitts at gmail.com (George Colpitts)
Date: Sun, 1 Jul 2018 15:39:41 -0300
Subject: [ANNOUNCE] GHC 8.6.1-alpha1 available
In-Reply-To: <87fu14ufsp.fsf@smart-cactus.org>
References: <87fu14ufsp.fsf@smart-cactus.org>
Message-ID: <CAB-d4A76gToQ1pg6MrxZq5CihvTUPrGqOSPkvXDOWM1X7Ses7w@mail.gmail.com>

I don't see an apple/darwin binary. Not sure if that is an oversight or was
planned.

On Sat, Jun 30, 2018 at 6:26 PM Ben Gamari <ben at well-typed.com> wrote:

>
> The GHC development team is pleased to announce the first
> alpha release leading up to GHC 8.6.1. The usual release artifacts
> are available from
>
>     https://downloads.haskell.org/~ghc/8.6.1-alpha1
>
> This is the first release (partially) generated using our new CI
> infrastructure. One known issue is that the haddock documentation is
> currently unavailable. This will be fixed in the next alpha release. Do
> let us know if you spot anything else amiss.
>
> As always, do let us know if you encounter any trouble in the course of
> testing. Thanks for your help!
>
> Cheers,
>
> - Ben
> _______________________________________________
> ghc-devs mailing list
> ghc-devs at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
>
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From ben at well-typed.com  Mon Jul  2 16:55:10 2018
From: ben at well-typed.com (Ben Gamari)
Date: Mon, 02 Jul 2018 12:55:10 -0400
Subject: [ANNOUNCE] GHC 8.6.1-alpha1 available
In-Reply-To: <CAB-d4A76gToQ1pg6MrxZq5CihvTUPrGqOSPkvXDOWM1X7Ses7w@mail.gmail.com>
References: <87fu14ufsp.fsf@smart-cactus.org>
 <CAB-d4A76gToQ1pg6MrxZq5CihvTUPrGqOSPkvXDOWM1X7Ses7w@mail.gmail.com>
Message-ID: <874lhhvaqd.fsf@smart-cactus.org>

George Colpitts <george.colpitts at gmail.com> writes:

> I don't see an apple/darwin binary. Not sure if that is an oversight or was
> planned.
>
Yikes! Thank you for mentioning this. This is indeed a mistake. I'm
uploading the Darwin distribution right now; it will be done within 20
minutes.

Cheers,

- Ben
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From mail at joachim-breitner.de  Mon Jul  2 17:40:33 2018
From: mail at joachim-breitner.de (Joachim Breitner)
Date: Mon, 02 Jul 2018 13:40:33 -0400
Subject: 2nd Call for Talks -- Haskell Implementors' Workshop
Message-ID: <d3f67563b280edb4de6e6988821db0f840c38161.camel@joachim-breitner.de>

                        Call for Contributions
               ACM SIGPLAN Haskell Implementors’ Workshop

            https://icfp18.sigplan.org/track/hiw-2018-papers

                     Co-located with ICFP 2018
                      St. Louis, Missouri, US
              https://conf.researchr.org/home/icfp-2018

Important dates
---------------

Proposal Deadline:  Friday, 20 July, 2018
Notification:       Friday, 3 August, 2018
Workshop:           Sunday, 23 September, 2018

Keynote speaker
---------------

This year, the Haskell Implementors’ Workshop is proud to present
Rahul Muttineni as the keynote speaker. Rahul brough the joys of
Haskell to the realm of Java by creating the Eta programming language.

   Title: Let's Go Mainstream with Eta!


   Eta is a fork of GHC that focuses on three core principles: user
   experience, performance, and safety. We'll discuss how we used these
   principles to guide the re-implementation of the GHC runtime and
   code generator on the JVM. Moreover, will also cover the inner
   workings of the FFI and the typechecker support we added for
   subtyping to make it smooth to interact with Java libraries.
   Finally, we'll round out with a look at where Eta is headed and how
   Eta and GHC can collaborate in the future.


About the Haskell Implementors’ Workshop
----------------------------------------

The 10th Haskell Implementors’ Workshop is to be held alongside ICFP
2018 this year in St. Louis. It is a forum for people involved in the
design and development of Haskell implementations, tools, libraries,
and supporting infrastructure, to share their work and discuss future
directions and collaborations with others.

Talks and/or demos are proposed by submitting an abstract, and
selected by a small program committee. There will be no published
proceedings. The workshop will be informal and interactive, with open
spaces in the timetable and room for ad-hoc discussion, demos and
lightning talks.

Scope and Target Audience
-------------------------

It is important to distinguish the Haskell Implementors’ Workshop from
the Haskell Symposium which is also co-located with ICFP 2018. The
Haskell Symposium is for the publication of Haskell-related research.
In contrast, the Haskell Implementors’ Workshop will have no
proceedings – although we will aim to make talk videos, slides and
presented data available with the consent of the speakers.

The Implementors’ Workshop is an ideal place to describe a Haskell
extension, describe works-in-progress, demo a new Haskell-related
tool, or even propose future lines of Haskell development. Members of
the wider Haskell community encouraged to attend the workshop – we
need your feedback to keep the Haskell ecosystem thriving. Students
working with Haskell are specially encouraged to share their work.

The scope covers any of the following topics. There may be some topics
that people feel we’ve missed, so by all means submit a proposal even
if it doesn’t fit exactly into one of these buckets:

 *  Compilation techniques
 *  Language features and extensions
 *  Type system implementation
 *  Concurrency and parallelism: language design and implementation
 *  Performance, optimisation and benchmarking
 *  Virtual machines and run-time systems
 *  Libraries and tools for development or deployment

Talks
-----

We invite proposals from potential speakers for talks and
demonstrations. We are aiming for 20-minute talks with 5 minutes for
questions and changeovers. We want to hear from people writing
compilers, tools, or libraries, people with cool ideas for directions
in which we should take the platform, proposals for new features to be
implemented, and half-baked crazy ideas. Please submit a talk title
and abstract of no more than 300 words.

Submissions can be made via HotCRP at
                    https://icfp-hiw18.hotcrp.com/
until July 20th (anywhere on earth).

We will also have lightning talks session. These have been very well
received in recent years, and we aim to increase the time available to
them. Lightning talks be ~7mins and are scheduled on the day of the
workshop. Suggested topics for lightning talks are to present a single
idea, a work-in-progress project, a problem to intrigue and perplex
Haskell implementors, or simply to ask for feedback and collaborators.

Program Committee
-----------------

 * Edwin Brady (University of St. Andrews, UK)
 * Joachim Breitner – chair (University of Pennsylvania)
 * Ben Gamari (Well-Typed LLP)
 * Michael Hanus (Kiel University)
 * Roman Leshchinsky (Facebook)
 * Niki Vazou (University of Maryland)

Contact
-------

 * Joachim Breitner <joachim at cis.upenn.edu>


-- 
Joachim Breitner
Post-Doctoral researcher
http://cis.upenn.edu/~joachim

From Sebastien.Hinderer at inria.fr  Tue Jul  3 09:13:51 2018
From: Sebastien.Hinderer at inria.fr (=?utf-8?Q?S=C3=A9bastien?= Hinderer)
Date: Tue, 3 Jul 2018 11:13:51 +0200
Subject: Testing that packages still compile
In-Reply-To: <CAHFo2uqGMUWA6VQ8Lx=MTt_5eHkJiuym8aNKgLXR=N8_exHk5A@mail.gmail.com>
References: <20180531093224.GA6992@prajna.paris.inria.fr>
 <CAHFo2uqGMUWA6VQ8Lx=MTt_5eHkJiuym8aNKgLXR=N8_exHk5A@mail.gmail.com>
Message-ID: <20180703091351.GA28728@prajna.paris.inria.fr>

Dear davean and Mikolaj,

Many thanks for your responses.

I will pass them on to my colleague who may participate to the
discussion himself.

Best wishes,

Sébastien.

From doaitse at swierstra.net  Wed Jul 11 20:46:27 2018
From: doaitse at swierstra.net (Doaitse Swierstra)
Date: Wed, 11 Jul 2018 22:46:27 +0200
Subject: I discovered that the uu-options package does not compile due to a
 dependency on lenses, which does not compile with GHC 8.4
Message-ID: <A25C8DFA-133A-46B8-B6C2-F6E7D6614883@swierstra.net>

In case you want to try here is an updated lenses package.

 Best,
 Doaitse

PS: I contacted Job (the author) in order to get things updated

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From doaitse at swierstra.net  Thu Jul 12 06:48:27 2018
From: doaitse at swierstra.net (Doaitse Swierstra)
Date: Thu, 12 Jul 2018 08:48:27 +0200
Subject: FYI
References: <32F58573-99D3-4ED9-8732-F8E7723FB5A0@gmail.com>
Message-ID: <879B0654-0EA1-4C5C-A6D9-1D547CA96AE5@swierstra.net>



> Begin doorgestuurd bericht:
> 
> Van: Job Vranish <jvranish at gmail.com>
> Onderwerp: Antw.: as far as I can see
> Datum: 12 juli 2018 om 3:17:23 CEST
> Aan: doaitse at swierstra.net
> 
> Wow thanks!
> 
> I’ve updated both. Thanks for letting me know and your help fixing it :)
> 
> - Job
> 
>> On Jul 11, 2018, at 4:44 PM, Doaitse Swierstra <doaitse at swierstra.net> wrote:
>> 
>> Dear Job,
>> 
>> I made lenses compatible with the new version of GHC. can you put it on hackage if you approve and update the github too. It still contains an older version.
>> 
>> Best, thanks,
>> Doaitse Swierstra
>> 
>> <src-26><lenses.cabal>
> 

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From ben at well-typed.com  Mon Jul 16 01:07:15 2018
From: ben at well-typed.com (Ben Gamari)
Date: Sun, 15 Jul 2018 21:07:15 -0400
Subject: [ANNOUNCE] GHC 8.6.1-alpha2 available
Message-ID: <87fu0kng3l.fsf@smart-cactus.org>


The GHC development team is pleased to announce the second alpha release
leading up to GHC 8.6.1. The usual release artifacts are available from

    https://downloads.haskell.org/~ghc/8.6.1-alpha2

This alpha fixes many of the bugs reported in the first alpha and
brings many of the core libraries to their (hopefully) final release
versions.

Unfortunately, the documentation troubles affecting the first alpha
haven't quite been resolved in this release. Consequently you will
again find there is no documentation uploaded. However, let us know if
anything else is amiss. Thanks for your help!

Cheers,

- Ben
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From mail at joachim-breitner.de  Mon Jul 16 23:29:28 2018
From: mail at joachim-breitner.de (Joachim Breitner)
Date: Mon, 16 Jul 2018 19:29:28 -0400
Subject: Final Call for Talks -- Haskell Implementors' Workshop
Message-ID: <77ede8a4f375a26cb04a87bd73bc06a840a27c77.camel@joachim-breitner.de>

                        Call for Contributions
               ACM SIGPLAN Haskell Implementors’ Workshop

            https://icfp18.sigplan.org/track/hiw-2018-papers

                     Co-located with ICFP 2018
                      St. Louis, Missouri, US
              https://conf.researchr.org/home/icfp-2018

Important dates
---------------

Proposal Deadline:  Friday, 20 July, 2018
Notification:       Friday, 3 August, 2018
Workshop:           Sunday, 23 September, 2018

Keynote speaker
---------------

This year, the Haskell Implementors’ Workshop is proud to present
Rahul Muttineni as the keynote speaker. Rahul brough the joys of
Haskell to the realm of Java by creating the Eta programming language.

   Title: Let's Go Mainstream with Eta!

   Eta is a fork of GHC that focuses on three core principles: user
   experience, performance, and safety. We'll discuss how we used these
   principles to guide the re-implementation of the GHC runtime and
   code generator on the JVM. Moreover, will also cover the inner
   workings of the FFI and the typechecker support we added for
   subtyping to make it smooth to interact with Java libraries.
   Finally, we'll round out with a look at where Eta is headed and how
   Eta and GHC can collaborate in the future.


About the Haskell Implementors’ Workshop
----------------------------------------

The 10th Haskell Implementors’ Workshop is to be held alongside ICFP
2018 this year in St. Louis. It is a forum for people involved in the
design and development of Haskell implementations, tools, libraries,
and supporting infrastructure, to share their work and discuss future
directions and collaborations with others.

Talks and/or demos are proposed by submitting an abstract, and
selected by a small program committee. There will be no published
proceedings. The workshop will be informal and interactive, with open
spaces in the timetable and room for ad-hoc discussion, demos and
lightning talks.

Scope and Target Audience
-------------------------

It is important to distinguish the Haskell Implementors’ Workshop from
the Haskell Symposium which is also co-located with ICFP 2018. The
Haskell Symposium is for the publication of Haskell-related research.
In contrast, the Haskell Implementors’ Workshop will have no
proceedings – although we will aim to make talk videos, slides and
presented data available with the consent of the speakers.

The Implementors’ Workshop is an ideal place to describe a Haskell
extension, describe works-in-progress, demo a new Haskell-related
tool, or even propose future lines of Haskell development. Members of
the wider Haskell community encouraged to attend the workshop – we
need your feedback to keep the Haskell ecosystem thriving. Students
working with Haskell are specially encouraged to share their work.

The scope covers any of the following topics. There may be some topics
that people feel we’ve missed, so by all means submit a proposal even
if it doesn’t fit exactly into one of these buckets:

 *  Compilation techniques
 *  Language features and extensions
 *  Type system implementation
 *  Concurrency and parallelism: language design and implementation
 *  Performance, optimisation and benchmarking
 *  Virtual machines and run-time systems
 *  Libraries and tools for development or deployment

Talks
-----

We invite proposals from potential speakers for talks and
demonstrations. We are aiming for 20-minute talks with 5 minutes for
questions and changeovers. We want to hear from people writing
compilers, tools, or libraries, people with cool ideas for directions
in which we should take the platform, proposals for new features to be
implemented, and half-baked crazy ideas. Please submit a talk title
and abstract of no more than 300 words.

Submissions can be made via HotCRP at
                    https://icfp-hiw18.hotcrp.com/
until July 20th (anywhere on earth).

We will also have lightning talks session. These have been very well
received in recent years, and we aim to increase the time available to
them. Lightning talks be ~7mins and are scheduled on the day of the
workshop. Suggested topics for lightning talks are to present a single
idea, a work-in-progress project, a problem to intrigue and perplex
Haskell implementors, or simply to ask for feedback and collaborators.

Program Committee
-----------------

 * Edwin Brady (University of St. Andrews, UK)
 * Joachim Breitner – chair (University of Pennsylvania)
 * Ben Gamari (Well-Typed LLP)
 * Michael Hanus (Kiel University)
 * Roman Leshchinsky (Facebook)
 * Niki Vazou (University of Maryland)

Contact
-------

 * Joachim Breitner <joachim at cis.upenn.edu>


-- 
Joachim Breitner
Post-Doctoral researcher
http://cis.upenn.edu/~joachim
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From juhpetersen at gmail.com  Thu Jul 19 11:38:55 2018
From: juhpetersen at gmail.com (Jens Petersen)
Date: Thu, 19 Jul 2018 20:38:55 +0900
Subject: [ANNOUNCE] GHC 8.6.1-alpha2 available
In-Reply-To: <87fu0kng3l.fsf@smart-cactus.org>
References: <87fu0kng3l.fsf@smart-cactus.org>
Message-ID: <CAEDGBq+LaQ2D9zueQZ3v6PmbjZrsY61OytiA0+yhPebyN_76RQ@mail.gmail.com>

On 16 July 2018 at 10:07, Ben Gamari <ben at well-typed.com> wrote:
> The GHC development team is pleased to announce the second alpha release leading up to GHC 8.6.1.

Thanks, I built it for Fedora and EPEL7 in my Copr repo:

https://copr.fedorainfracloud.org/coprs/petersen/ghc-8.6.1/

Jens

From asr at eafit.edu.co  Sat Jul 21 02:27:38 2018
From: asr at eafit.edu.co (=?UTF-8?B?QW5kcsOpcyBTaWNhcmQtUmFtw61yZXo=?=)
Date: Fri, 20 Jul 2018 21:27:38 -0500
Subject: [ANNOUNCE] GHC 8.6.1-alpha2 available
In-Reply-To: <87fu0kng3l.fsf@smart-cactus.org>
References: <87fu0kng3l.fsf@smart-cactus.org>
Message-ID: <CAOUWSGDd8OmjCc93MhNfeY99ob6FRhSAHUv9dS9T8zR6QJDGvw@mail.gmail.com>

On 15 July 2018 at 20:07, Ben Gamari <ben at well-typed.com> wrote:
>
> The GHC development team is pleased to announce the second alpha release
> leading up to GHC 8.6.1.

The following MVE uses the gitrev library (
http://hackage.haskell.org/package/gitrev ):

$ cat Test.hs

{-# LANGUAGE TemplateHaskell #-}

module Main where

import Development.GitRev

commitInfo :: Maybe String
commitInfo = case $(gitHash) of
  "UNKNOWN" -> Nothing
  hash      -> Just hash

main :: IO ()
main = print commitInfo


The MVE compiles *without* warnings with different versions of GHC
(e.g. 8.4.3) but with GHC 8.6.1-alpha2 I get the following warning:

$ ghc Test.hs

Test.hs:10:3: warning: [-Woverlapping-patterns]
    Pattern match is redundant
    In a case alternative: hash -> ...
   |
10 |   hash      -> Just hash
   |   ^^^^^^^^^^^^^^^^^^^^^^
Linking Test ...

Is it a bug or is it the expected behaviour?


Best,


-- 
Andrés