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Today's Topics:
1. What does 'impossible happened' mean? (Baa)
2. Re: What does 'impossible happened' mean? (David McBride)
3. Re: What does 'impossible happened' mean? (David McBride)
4. Re: What does 'impossible happened' mean? (Baa)
5. Re: What does 'impossible happened' mean? (David McBride)
----------------------------------------------------------------------
Message: 1
Date: Mon, 11 Dec 2017 18:39:00 +0200
From: Baa <aqua...@gmail.com>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <beginners@haskell.org>
Subject: [Haskell-beginners] What does 'impossible happened' mean?
Message-ID: <20171211183900.220fd445@Pavel>
Content-Type: text/plain; charset=US-ASCII
Hello, List. I hit error:
ghc: panic! (the 'impossible' happened)
(GHC version 8.0.2 for x86_64-unknown-linux):
initTc: unsolved constraints
WC {wc_insol = [W] spec_a86e :: t_a86d[tau:1] (CHoleCan: spec)}
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
what does it mean and how to fix it?
PS. I only added template Haskell "call" in my test suite like
$(blahBlah something)
The same call works fine in other modules and in GHCI. "stack build"
works too, but tests - no (last stack 1.6.1)
===
Best regards, Paul
------------------------------
Message: 2
Date: Mon, 11 Dec 2017 11:43:24 -0500
From: David McBride <toa...@gmail.com>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <beginners@haskell.org>
Subject: Re: [Haskell-beginners] What does 'impossible happened' mean?
Message-ID:
<CAN+Tr41uZZoQ=mh9g3ngpy9gm0k9nyvekrwkacndr82tx-g...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
It may be a bug in ghc. It may be a bug in stack. Not much you can do
about it other than to report it.
On Mon, Dec 11, 2017 at 11:39 AM, Baa <aqua...@gmail.com> wrote:
> Hello, List. I hit error:
>
> ghc: panic! (the 'impossible' happened)
> (GHC version 8.0.2 for x86_64-unknown-linux):
> initTc: unsolved constraints
> WC {wc_insol = [W] spec_a86e :: t_a86d[tau:1] (CHoleCan: spec)}
>
> Please report this as a GHC bug: http://www.haskell.org/ghc/
> reportabug
>
> what does it mean and how to fix it?
>
> PS. I only added template Haskell "call" in my test suite like
>
> $(blahBlah something)
>
> The same call works fine in other modules and in GHCI. "stack build"
> works too, but tests - no (last stack 1.6.1)
>
> ===
> Best regards, Paul
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
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Message: 3
Date: Mon, 11 Dec 2017 11:45:02 -0500
From: David McBride <toa...@gmail.com>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <beginners@haskell.org>
Subject: Re: [Haskell-beginners] What does 'impossible happened' mean?
Message-ID:
<can+tr43dv-ozecb71rzbxqjrsem1uc4tjrk504t4yd1v8lb...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
And I should say, you might try a newer ghc, they fix things all the time.
Stack is still on ghc 8.0.2, but newer snapshots are on 8.2.2.
On Mon, Dec 11, 2017 at 11:43 AM, David McBride <toa...@gmail.com> wrote:
> It may be a bug in ghc. It may be a bug in stack. Not much you can do
> about it other than to report it.
>
> On Mon, Dec 11, 2017 at 11:39 AM, Baa <aqua...@gmail.com> wrote:
>
>> Hello, List. I hit error:
>>
>> ghc: panic! (the 'impossible' happened)
>> (GHC version 8.0.2 for x86_64-unknown-linux):
>> initTc: unsolved constraints
>> WC {wc_insol = [W] spec_a86e :: t_a86d[tau:1] (CHoleCan: spec)}
>>
>> Please report this as a GHC bug: http://www.haskell.org/ghc/rep
>> ortabug
>>
>> what does it mean and how to fix it?
>>
>> PS. I only added template Haskell "call" in my test suite like
>>
>> $(blahBlah something)
>>
>> The same call works fine in other modules and in GHCI. "stack build"
>> works too, but tests - no (last stack 1.6.1)
>>
>> ===
>> Best regards, Paul
>> _______________________________________________
>> Beginners mailing list
>> Beginners@haskell.org
>> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>>
>
>
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------------------------------
Message: 4
Date: Mon, 11 Dec 2017 19:15:14 +0200
From: Baa <aqua...@gmail.com>
To: beginners@haskell.org
Subject: Re: [Haskell-beginners] What does 'impossible happened' mean?
Message-ID: <20171211191514.6bf84519@Pavel>
Content-Type: text/plain; charset=US-ASCII
Hello, David.
Something new :) So,
1. How to report such bug?
2. How to upgrade to 8.2.2 and to new LTS?
I tried to change "resolve: lts-XX" to "resolve: ghc-8.2.2" in
stack.yaml but hit many errors.
> And I should say, you might try a newer ghc, they fix things all the
> time. Stack is still on ghc 8.0.2, but newer snapshots are on 8.2.2.
>
> On Mon, Dec 11, 2017 at 11:43 AM, David McBride <toa...@gmail.com>
> wrote:
>
> > It may be a bug in ghc. It may be a bug in stack. Not much you
> > can do about it other than to report it.
> >
> > On Mon, Dec 11, 2017 at 11:39 AM, Baa <aqua...@gmail.com> wrote:
> >
> >> Hello, List. I hit error:
> >>
> >> ghc: panic! (the 'impossible' happened)
> >> (GHC version 8.0.2 for x86_64-unknown-linux):
> >> initTc: unsolved constraints
> >> WC {wc_insol = [W] spec_a86e :: t_a86d[tau:1] (CHoleCan:
> >> spec)}
> >>
> >> Please report this as a GHC bug:
> >> http://www.haskell.org/ghc/rep ortabug
> >>
> >> what does it mean and how to fix it?
> >>
> >> PS. I only added template Haskell "call" in my test suite like
> >>
> >> $(blahBlah something)
> >>
> >> The same call works fine in other modules and in GHCI. "stack
> >> build" works too, but tests - no (last stack 1.6.1)
> >>
> >> ===
> >> Best regards, Paul
> >> _______________________________________________
> >> Beginners mailing list
> >> Beginners@haskell.org
> >> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
> >>
> >
> >
------------------------------
Message: 5
Date: Mon, 11 Dec 2017 12:30:44 -0500
From: David McBride <toa...@gmail.com>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <beginners@haskell.org>
Subject: Re: [Haskell-beginners] What does 'impossible happened' mean?
Message-ID:
<CAN+Tr40EGT1QJsVLiesLj=AXMBQf3S3qn_BRhhB=ge63ozs...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
It is all detailed in the error message.
http://www.haskell.org/ghc/reportabug
On Mon, Dec 11, 2017 at 12:15 PM, Baa <aqua...@gmail.com> wrote:
> Hello, David.
> Something new :) So,
>
> 1. How to report such bug?
> 2. How to upgrade to 8.2.2 and to new LTS?
> I tried to change "resolve: lts-XX" to "resolve: ghc-8.2.2" in
> stack.yaml but hit many errors.
>
>
> > And I should say, you might try a newer ghc, they fix things all the
> > time. Stack is still on ghc 8.0.2, but newer snapshots are on 8.2.2.
> >
> > On Mon, Dec 11, 2017 at 11:43 AM, David McBride <toa...@gmail.com>
> > wrote:
> >
> > > It may be a bug in ghc. It may be a bug in stack. Not much you
> > > can do about it other than to report it.
> > >
> > > On Mon, Dec 11, 2017 at 11:39 AM, Baa <aqua...@gmail.com> wrote:
> > >
> > >> Hello, List. I hit error:
> > >>
> > >> ghc: panic! (the 'impossible' happened)
> > >> (GHC version 8.0.2 for x86_64-unknown-linux):
> > >> initTc: unsolved constraints
> > >> WC {wc_insol = [W] spec_a86e :: t_a86d[tau:1] (CHoleCan:
> > >> spec)}
> > >>
> > >> Please report this as a GHC bug:
> > >> http://www.haskell.org/ghc/rep ortabug
> > >>
> > >> what does it mean and how to fix it?
> > >>
> > >> PS. I only added template Haskell "call" in my test suite like
> > >>
> > >> $(blahBlah something)
> > >>
> > >> The same call works fine in other modules and in GHCI. "stack
> > >> build" works too, but tests - no (last stack 1.6.1)
> > >>
> > >> ===
> > >> Best regards, Paul
> > >> _______________________________________________
> > >> Beginners mailing list
> > >> Beginners@haskell.org
> > >> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
> > >>
> > >
> > >
>
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
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