[Nix-dev] ghc not able to find libz.so

[Richard Wallace]

I will give those workarounds a try. I'm just confused about why it is
necessary on one machine and not another. Part of the promise of nix is
reproducible builds, but this appears to throw a monkey wrench into that
notion.

I'm also a bit surprised this doesn't come up more often. The project being
built doesn't directly rely on zlib or any other C code, this problem
occurs when template Haskell is being used to generate lenses.
On Oct 14, 2014 7:53 PM, "Raahul Kumar" <raahul.kumar at gmail.com> wrote:

> This Haskell depending on C library problem has happened before
>
> http://comments.gmane.org/gmane.linux.distributions.nixos/13362
>
> This haskell program needs a zlib. My link above has Peter Simmon's hack.
>
> Aloha,
> RK.
>
>
>
> On Wed, Oct 15, 2014 at 12:33 PM, Richard Wallace <
> rwallace at thewallacepack.net> wrote:
>
>> Hello all,
>>
>> I put nix on a new machine today and tried to build a Haskell project
>> that successfully builds on other machines.  To my great surprise, I
>> encountered this error
>>
>> [ 6 of 12] Compiling Rainicorn.Types  ( src/Rainicorn/Types.hs,
>> dist/build/hiberico/hiberico-tmp/Rainicorn/Types.o )
>>
>> <no location info>:
>>     ghc: panic! (the 'impossible' happened)
>>   (GHC version 7.8.3 for x86_64-unknown-linux):
>> Dynamic linker not initialised
>>
>> Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
>>
>> Loading package ghc-prim ... linking ... done.
>> Loading package integer-gmp ... linking ... done.
>> Loading package base ... linking ... done.
>> Loading package array-0.5.0.0 ... linking ... done.
>> Loading package deepseq-1.3.0.2 ... linking ... done.
>> Loading package bytestring-0.10.4.0 ... linking ... done.
>> Loading package containers-0.5.5.1 ... linking ... done.
>> Loading package binary-0.7.1.0 ... linking ... done.
>> Loading package digest-0.0.1.2 ... linking ... done.
>> Loading package filepath-1.3.0.2 ... linking ... done.
>> Loading package old-locale-1.0.0.6 ... linking ... done.
>> Loading package time-1.4.2 ... linking ... done.
>> Loading package unix-2.7.0.1 ... linking ... done.
>> Loading package directory-1.2.1.0 ... linking ... done.
>> Loading package transformers-0.3.0.0 ... linking ... done.
>> Loading package mtl-2.1.2 ... linking ... done.
>> Loading package old-time-1.1.0.2 ... linking ... done.
>> Loading package pretty-1.1.1.1 ... linking ... done.
>> Loading package text-1.1.1.3 ... linking ... done.
>> Loading package zlib-0.5.4.1 ...
>> <no location info>:
>>     <command line>: can't load .so/.DLL for: libz.so (libz.so: cannot
>> open shared object file: No such file or directory)
>>
>> This project is using ghc 7.8.3 and a pretty recent nixpkgs.  I'm not
>> seeing this error on other machines so have no idea what could be going
>> on.  Any ideas?
>>
>> Thanks,
>> Rich
>>
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>>
>>
>
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