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Today's Topics:
1. Re: Stack could not find libHStransformers (Quentin Liu)
----------------------------------------------------------------------
Message: 1
Date: Thu, 7 Dec 2017 14:50:19 -0500
From: Quentin Liu <quentin.liu.0...@gmail.com>
To: The Haskell-Beginners Mailing List - Discussion of primarily
beginner-level topics related to Haskell <beginners@haskell.org>
Subject: Re: [Haskell-beginners] Stack could not find
libHStransformers
Message-ID: <0ad4de58-494d-474d-8871-d5ebfb12a246@Spark>
Content-Type: text/plain; charset="utf-8"
Thanks! It really helps.
Regards,
Qingbo Liu
On Dec 7, 2017, 12:31 -0500, Michael Snoyman <mich...@snoyman.com>, wrote:
> I'm not sure how it happened, but it looks like you ended up with some files
> in ~/.stack which are linked against a system-wide GHC. In particular:
>
> Library not loaded:
> /usr/local/opt/ghc/lib/ghc-8.0.2/transformers-0.5.2.0/libHStransformers-0.5.2.0-ghc8.0.2.dylib
>
> The easiest way to fix this is to just wipe out your ~/.stack directory,
> which will result in having to do some recompiles, but otherwise should be
> harmless.
>
> > On Thu, Dec 7, 2017 at 7:05 PM, Quentin Liu <quentin.liu.0...@gmail.com>
> > wrote:
> > > > What does this output: `which ghc ; stack exec which ghc`
> > > `which ghc` gives "ghc not found”, while `stack exec which ghc` gives
> > > "/Users/HereWegoR/.stack/programs/x86_64-osx/ghc-8.0.2/bin/ghc”.
> > >
> > > > What does your stack.yaml look like?
> > > For this file I don’t have any stack.yaml. I just wrote the file and
> > > tried to load it into ghci.
> > >
> > > > Do you have a .ghci or other kinds of local configuration file?
> > > As far as I can tell, no.
> > >
> > > Regards,
> > > Qingbo Liu
> > >
> > > On Dec 7, 2017, 11:33 -0500, Michael Snoyman <mich...@snoyman.com>, wrote:
> > > > Some ideas:
> > > >
> > > > * What does this output: `which ghc ; stack exec which ghc`
> > > > * What does your stack.yaml look like?
> > > > * Do you have a .ghci or other kinds of local configuration file?
> > > >
> > > > > On Thu, Dec 7, 2017 at 5:42 PM, Quentin Liu
> > > > > <quentin.liu.0...@gmail.com> wrote:
> > > > > > I am using ghc download and managed by stack. My stack is of the
> > > > > > latest version, which is 1.6.1.
> > > > > >
> > > > > > Regards,
> > > > > > Qingbo Liu
> > > > > >
> > > > > > On Dec 7, 2017, 01:56 -0500, Michael Snoyman <mich...@snoyman.com>,
> > > > > > wrote:
> > > > > > > What version of Stack are you using (stack --version), and how
> > > > > > > did you install Stack and GHC?
> > > > > > >
> > > > > > > It looks like you're using a system-wide GHC installation, which
> > > > > > > (for reasons like this) we by default no longer use by default in
> > > > > > > recent Stack releases.
> > > > > > >
> > > > > > > Upgrading to the latest Stack (via `stack upgrade` or following
> > > > > > > the instructions at [1]) will probably solve the problem.
> > > > > > >
> > > > > > > [1] https://haskell-lang.org/get-started/osx
> > > > > > >
> > > > > > > > On Thu, Dec 7, 2017 at 8:43 AM, Quentin Liu
> > > > > > > > <quentin.liu.0...@gmail.com> wrote:
> > > > > > > > > Hi,
> > > > > > > > >
> > > > > > > > > I was trying to use Parsec and imported
> > > > > > > > > Text.ParserCombinators.Parsec. I could call “stack ghc” to
> > > > > > > > > compile the file, but when I loaded the file into ghci and
> > > > > > > > > called any function, ghci would report errors
> > > > > > > > > > can't load .so/.DLL for:
> > > > > > > > > > /Users/HereWegoR/.stack/snapshots/x86_64-osx/lts-8.8/8.0.2/lib/x86_64-osx-ghc-8.0.2/libHSmtl-2.2.1-BLKBelFsPB3BoFeSWSOYj6-ghc8.0.2.dylib
> > > > > > > > > >
> > > > > > > > > > (dlopen(/Users/HereWegoR/.stack/snapshots/x86_64-osx/lts-8.8/8.0.2/lib/x86_64-osx-ghc-8.0.2/libHSmtl-2.2.1-BLKBelFsPB3BoFeSWSOYj6-ghc8.0.2.dylib,
> > > > > > > > > > 5): Library not loaded:
> > > > > > > > > > /usr/local/opt/ghc/lib/ghc-8.0.2/transformers-0.5.2.0/libHStransformers-0.5.2.0-ghc8.0.2.dylib
> > > > > > > > > > Referenced from:
> > > > > > > > > > /Users/HereWegoR/.stack/snapshots/x86_64-osx/lts-8.8/8.0.2/lib/x86_64-osx-ghc-8.0.2/libHSmtl-2.2.1-BLKBelFsPB3BoFeSWSOYj6-ghc8.0.2.dylib
> > > > > > > > > > Reason: image not found)
> > > > > > > > > >
> > > > > > > > >
> > > > > > > > > I tried to install transformers by calling `stack install
> > > > > > > > > transformers` but the problem still persisted. Is it because
> > > > > > > > > the version of transformers in my repo is different from the
> > > > > > > > > one referenced by `mtl` package? How should I fix it?
> > > > > > > > >
> > > > > > > > > Regards,
> > > > > > > > > Qingbo Liu
> > > > > > > > >
> > > > > > > > > _______________________________________________
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> > > > > > >
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