Thx everybody.<div><span style="font-size:15px">Vasily<br></span><br>On Tuesday, October 13, 2015, Sumit Sahrawat, Maths & Computing, IIT (BHU) <<a href="mailto:sumit.sahrawat.apm13@iitbhu.ac.in">sumit.sahrawat.apm13@iitbhu.ac.in</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">The learnhaskell guide has instructions to get up to date versions of ghc and cabal.<div><br></div><div>For Ubuntu: <a href="https://github.com/bitemyapp/learnhaskell/blob/master/install.md#ubuntu" target="_blank">https://github.com/bitemyapp/learnhaskell/blob/master/install.md#ubuntu</a><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On 14 October 2015 at 06:48, Vasili I. Galchin <span dir="ltr"><<a href="javascript:_e(%7B%7D,'cvml','vigalchin@gmail.com');" target="_blank">vigalchin@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">vasili@vasili-VirtualBox:  cabal --version<br>
cabal-install version 1.20.0.3<br>
using version 1.20.0.2 of the Cabal library<br>
<br>
vasili@vasili-VirtualBox: ghc --version<br>
The Glorious Glasgow Haskell Compilation System, version 7.6.3<br>
<br>
<br>
OK ... I am running Ubuntu #31-Ubuntu. I am using apt-* install<br>
manager. I am relying on the install manager team to furnish versions<br>
of software. I will have  to directly <a href="http://haskell.org" rel="noreferrer" target="_blank">haskell.org</a> to upgrade, yes??<br>
<br>
Vasily<br>
<div><div><br>
On Tue, Oct 13, 2015 at 12:43 PM, Mikhail Glushenkov<br>
<<a href="javascript:_e(%7B%7D,'cvml','mikhail.glushenkov@gmail.com');" target="_blank">mikhail.glushenkov@gmail.com</a>> wrote:<br>
> Hi,<br>
><br>
> On 13 October 2015 at 10:41, Vasili I. Galchin <<a href="javascript:_e(%7B%7D,'cvml','vigalchin@gmail.com');" target="_blank">vigalchin@gmail.com</a>> wrote:<br>
>> [...]<br>
>> "unrecognized option `--extra-prog-path=/home/vasili/.cabal/bin'"<br>
>> [...]<br>
><br>
> Upgrading to a newer GHC and/or cabal-install should fix this, I think.<br>
><br>
> Which versions of GHC/cabal-install are you using? What is the output<br>
> of 'cabal configure -v3'?<br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><div><div dir="ltr"><div><div dir="ltr"><div dir="ltr"><div>Regards</div><div dir="ltr"><div><br></div><div>Sumit Sahrawat</div></div></div></div></div></div></div>
</div>
</blockquote></div>