Re: create a symlink

[Danny Milosavljevic <dannym@scratchpost.org>]

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On Wed, 13 Mar 2019 15:52:36 +0100
Ludovic Courtès <ludo@gnu.org> wrote:

> Hello,
> 
> Rene <ikhuuma@gmail.com> skribis:
> 
> > How I can change "/hurd/" by "/gnu/store/abc..-hurd-0.9/hurd/" in
> > <hurd/paths.h> through Guix?  
> 
> I think /hurd is hard to avoid; it’s akin to /bin/sh, which is also
> hard-coded in libc (for the ‘system’ function).  As you found out, you’d
> need to change macros in libc headers, which means that libc could only
> talk to a specific instance of the Hurd servers.  Furthermore, /hurd
> needs to be writable.
> 
> So I would recommend keeping /hurd, at least as a first approach.

In that case, /hurd could be handled like we handle /run/booted-system .

Rene could use service extension like

  (service-extension boot-service-type hurd-boot-gexp)

in order to create the "/hurd" symlink (in hurd-boot-gexp).

That is, if the Hurd can boot that far (until the root filesystem is mounted).

In fact, as a hack, we could create a dummy service that does the service
extension and use it for the Hurd.

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