[Nix-dev] clang-based stdenv for OSX Yosemite

[Alfredo Di Napoli]

Thank you so much guys for your stoic effort!
For the nix newbies like me, could you please expand upon
"If you would like to use our branch you should add hydra.joelt.io to your
binary caches."

I have absolutely no clue how to do it :)
Thanks!
Alfredo

On Tuesday, 4 November 2014, Daniel Peebles <pumpkingod at gmail.com> wrote:
> Anyone interested in this project should join ##nix-darwin on
> freenode. There's still lots to do!
>
> On Mon, Nov 3, 2014 at 9:31 PM, Joel <me at joelt.io> wrote:
>> Daniel Peebles, John Wiegley, Eric Seidel, and myself have been working
on a
>> clang-based stdenv for OSX for the past few weeks. It is fully functional
>> now and you can find it at https://github.com/joelteon/nixpkgs. It’s
being
>> continuously built on my Hydra instance at https://hydra.joelt.io/. If
you
>> would like to use our branch you should add hydra.joelt.io to your binary
>> caches. To my knowledge this is the only nixpkgs fork that works with
>> Yosemite.
>>
>> Daniel is also working on a 100% pure stdenv (which involves building
>> Apple’s open source libc), but that’s still in the works.
>>
>> There are a few notable changes besides the obvious change in compiler.
We
>> are willing to revert these before merging into NixOS upstream, since
>> they’re pretty major:
>>
>> * stdenv.gcc has been renamed to stdenv.cc. In the process we fixed a few
>> bugs where packages incorrectly referred to gcc instead of the stdenv’s
>> compiler. However, this does result in totally rebuilding the Linux
stdenv
>> as well, since the generic setup script now expects a $cc variable
instead
>> of a $gcc variable.
>> * Instead of using the string “gcc” or “${stdenv.gcc}/bin/gcc”, we now
use
>> `stdenv.progname` (and `stdenv.prognamexx`).
>>
>> We had a few motivations for this effort. I’d been considering using
clang
>> as my stdenv’s main compiler ever since I found out that some of the
>> packages I hold dear (such as vim and phantomjs) need to be built with
>> Apple’s ported GCC 4.2.1. Aside from my philosophical objection to this,
>> Yosemite’s developer previews were unable to compile GCC at all (at least
>> for the first 3). I think it’s possible to compile GCC on Yosemite GM,
but
>> I’m no longer inclined to try as this branch now uses Apple’s officially
>> supported compiler.
>>
>> We’d welcome your input and also your help; there’s still a lot left to
do.
>>
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>>
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