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List: haskell-beginners
Subject: Re: [Haskell-beginners] problem installing persistent-postgresql together with persistent-template
From: Michael Snoyman <michael () snoyman ! com>
Date: 2016-03-02 10:15:57
Message-ID: CAKA2JgKQYH-JaQ169k_aoVRKYqg5PBZTvi96CKW1sbzCATMmng () mail ! gmail ! com
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You can force this with cabal using --constraint
"persistent-template=2.2.2" or the equivalent.
But these kinds of dependency solving problems are the primary reason I
recommend using a Stackage snapshot[1]. If you switch over to building with
Stack[2], you'll get that behavior by default.
[1] https://www.stackage.org/
[2] http://haskellstack.org/
On Wed, Mar 2, 2016 at 12:04 PM, Miro Karpis <miroslav.karpis@gmail.com>
wrote:
> Please,..can you help me with following?
>
> I'm trying to install both persistent-postgresql together with
> persistent-template, but I keep getting:
>
>
> mac:~ miro$ cabal install persistent-template
> Resolving dependencies...
> In order, the following would be installed:
> aeson-0.9.0.1 (latest: 0.11.0.0) (via: persistent-template-2.1.5
> persistent-2.2.4 aeson-compat-0.3.1.0) (new version)
> aeson-compat-0.3.1.0 (via: persistent-template-2.1.5) (new package)
> persistent-2.2.4 (via: persistent-template-2.1.5) (reinstall) (changes:
> aeson-0.11.0.0 -> 0.9.0.1)
> persistent-template-2.1.5 (new package)
> cabal: The following packages are likely to be broken by the reinstalls:
> persistent-postgresql-2.2.2
> Use --force-reinstalls if you want to install anyway.
>
>
>
> If I continue with force-reinstall then I broke postgresql. Is there a way
> to force persistent-template to use 2.2.2 version (I know if I download it
> and change the dep. in cabal file,....but is that what I should do :) )?
>
>
>
> running on:
> mac:~ miro$ cabal --version
> cabal-install version 1.22.8.0
> using version 1.22.7.0 of the Cabal library
>
> mac:~ miro$ ghc --version
> The Glorious Glasgow Haskell Compilation System, version 7.10.3
>
>
> cheers,
> m.
>
>
>
> _______________________________________________
> Beginners mailing list
> Beginners@haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
>
[Attachment #5 (text/html)]
<div dir="ltr">You can force this with cabal using --constraint \
"persistent-template=2.2.2" or the equivalent.<div><br></div><div>But these \
kinds of dependency solving problems are the primary reason I recommend using a \
Stackage snapshot[1]. If you switch over to building with Stack[2], you'll get \
that behavior by default.</div><div><br></div><div>[1] <a \
href="https://www.stackage.org/" \
target="_blank">https://www.stackage.org/</a></div><div>[2] <a \
href="http://haskellstack.org/" \
target="_blank">http://haskellstack.org/</a></div><div class="gmail_extra"><br><div \
class="gmail_quote">On Wed, Mar 2, 2016 at 12:04 PM, Miro Karpis <span \
dir="ltr"><<a href="mailto:miroslav.karpis@gmail.com" \
target="_blank">miroslav.karpis@gmail.com</a>></span> wrote:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"><div dir="ltr">Please,..can you help me with \
following?<div><br></div><div>I'm trying to install both persistent-postgresql \
together with persistent-template, but I keep getting:</div><div><font face="times \
new roman, serif"><br></font></div><div><font face="times new roman, \
serif"><br></font></div><font face="times new roman, serif">mac:~ miro$ cabal install \
persistent-template<br>Resolving dependencies...<br>In order, the following would be \
installed:<br>aeson-0.9.0.1 (latest: 0.11.0.0) (via: persistent-template-2.1.5 \
persistent-2.2.4 aeson-compat-0.3.1.0) (new version)<br>aeson-compat-0.3.1.0 (via: \
persistent-template-2.1.5) (new package)<br>persistent-2.2.4 (via: \
persistent-template-2.1.5) (reinstall) (changes: aeson-0.11.0.0 -> \
0.9.0.1)<br>persistent-template-2.1.5 (new package)<br>cabal: The following packages \
are likely to be broken by the reinstalls:<br>persistent-postgresql-2.2.2<br>Use \
--force-reinstalls if you want to install anyway.</font><div><font face="times new \
roman, serif"><br></font></div><div><br></div><div><br></div><div>If I continue with \
force-reinstall then I broke postgresql. Is there a way to force persistent-template \
to use 2.2.2 version (I know if I download it and change the dep. in cabal \
file,....but is that what I should do :) )?<font face="times new roman, \
serif"><br></font></div><div><br></div><div><div><font face="arial, helvetica, \
sans-serif"><br><br></font></div><div><font face="arial, helvetica, \
sans-serif">running on:</font></div><font face="times new roman, serif">mac:~ miro$ \
cabal --version</font><div><font face="times new roman, serif">cabal-install version \
1.22.8.0<br>using version 1.22.7.0 of the Cabal library</font></div><div><font \
face="times new roman, serif"><br></font></div><font face="times new roman, \
serif">mac:~ miro$ ghc --version<br>The Glorious Glasgow Haskell Compilation System, \
version 7.10.3</font><br></div><div><font face="times new roman, \
serif"><br></font></div><div><font face="times new roman, \
serif"><br></font></div><div>cheers,</div><div>m.</div><div><br></div><div><br></div></div>
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<br></blockquote></div><br></div></div>
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