Re: [GSoC] Porting GuixSD to GNU Hurd draft

[Manolis Ragkousis]

Hey

On 03/24/16 15:22, Ludovic Courtès wrote:
> So, let’s say PID isolation will be optional, and we can always adjust
> later on.  Sounds good?
> 
> Manolis, make sure to read about how the various Hurd servers provides
> these parts of POSIX personality: file systems, UIDs, PIDs, networking,
> and so on.

Already started. :-)

> As far as code integration code, I think we won’t bother syncing this
> work with nix-daemon; guix-daemon has already diverged, and for instance
> it does not have OS X sandbox support.
> 
> You’ll have to arrange to have the Hurd-specific bits in a separate
> file, so that ‘#ifdef HURD’ are not scattered all over the place.
> 
> This is C(++) as you know.  WDYT, Manolis?

I have to start studying the daemon's code more. From what I know the
part that handles builds is in libstore/build.cc. I will start there.

I think I can do it.

>>> The main question is whether you should implement build isolation in
>>> guix-daemon, in which case that would leave little time for the GuixSD
>>> parts.  I think I would rather let you focus on the GuixSD stuff as you
>>> wrote, but I’d like to hear what the Hurd folks think.
>>
>> I consider isolation more important.
> 
> OK.

Isolation first it is then.

> So, Manolis, what about reframing the agenda such that porting
> guix-daemon to GNU/Hurd comes first (I’d consider it roughly half of the
> programming effort), followed by GuixSD stuff?
> 

Current objectives then:
1) Achieve build isolation in the daemon on the Hurd.
2) Modify Guix so it can produce a working image, while isolating any
cases of Linux assumptions.
3) Boot to GuixSD

Ludo, Justus do you agree with this?

Manolis