Re: Stuck installing guix package manager on Fedora with selinux

[Markku Korkeala <markku.korkeala@iki.fi>]

Hi,

actually you do not need to have selinux disabled with the rpm packages,
I'm running SELinux in enforcing mode. That is something I do not want
disable either :) Some selinux-stuff is also included in the package:

rpm -ql guix | grep selinux
/usr/lib64/guile/3.0/site-ccache/gnu/packages/selinux.go
/usr/share/guile/site/3.0/gnu/packages/selinux.scm
/usr/share/selinux/packages/guix-daemon.cil

Best regards,
Markku

On Wed, Oct 18, 2023 at 10:06:07AM -0700, Alexis Simon wrote:
> Hi, Thanks for the suggestion.
> 
> I stumbled on this guix rpm but it seems also that selinux needs to be
> disabled with that one.
> I think the maintainer initially wanted to apply selinux policies but in the
> end commented out all those parts. (There's also a hint in the changelog
> that it doesn't work with selinux, see here [0]).
> 
> As someone else suggested, yes I could set selinux to permissive but I don't
> find that an acceptable solution. I don't want to disable a security feature
> of my system.
> 
> Also an update on my initial email: after a reboot, I'm back at square one
> with the remount error. So the solution wasn't really one.
> 
> Best regards,
> Alexis
> 
> [0] https://copr-dist-git.fedorainfracloud.org/cgit/lantw44/guix/guix.git/tree/guix.spec?h=f38#n556
> 
> On 18/10/2023 06:40, Markku Korkeala wrote:
> > Hi,
> > 
> > I haven't tried the official guix installation, but I was
> > able to get guix running on Fedora using rpm packages from copr:
> > 
> > https://copr.fedorainfracloud.org/coprs/lantw44/guix/
> > 
> > If you can't find solution to the SELinux problem, maybe
> > give those rpm packages a try.
> > 
> > Best regards,
> > Markku
> > 
> > On Tue, Oct 17, 2023 at 09:42:58AM -0700, Alexis Simon wrote:
> > > Hi,
> > > 
> > > I'd like to try the guix package manager but am stuck installing it on
> > > Fedora 38 with selinux. I should say I don't know anything about the details
> > > of either guix or selinux.
> > > I know a few other persons that also wanted to try guix but gave up due to
> > > issues with selinux, so I think solving this issue could help in adoption.
> > > 
> > > I've used the installer script which worked well, then was initially hit by
> > > this error
> > > `guix install: error: remounting /gnu/store writable: Permission denied`
> > > 
> > > This was solved by doing
> > > sudo semodule -i /gnu/store/5kj8lyybjrdl7xd0fx9g9vzkz8sklqsy-guix-1.4.0/share/selinux/guix-daemon.cil
> > > 
> > > sudo mount -o remount,rw /gnu/store
> > > sudo restorecon -R /gnu /var/guix
> > > sudo systemctl restart guix-daemon.service
> > > 
> > > (note that the mount step was the missing part that was missing from all
> > > guides I've seen on the web, and I found it in a guix commit).
> > > 
> > > Now I have a different issue, guix-daemon doesn't seem to be able to access
> > > internet with errors of the type
> > > `In procedure getaddrinfo: Temporary failure in name resolution`
> > > (disabling selinux works in that case, but I want it enabled)
> > > 
> > > This is what I get from setroubleshoot:
> > > ```
> > > SELinux is preventing guix substitute from search access on the directory
> > > systemd.
> > > *****  Plugin catchall (100. confidence) suggests   *****
> > > *********************
> > > If you believe that guix substitute should be allowed sea
> > > rch access on the systemd directory by default.
> > > Then you should report this as a bug.
> > > You can generate a local policy module to allow this acce
> > > ss.
> > > Do
> > > allow this access for now by executing:
> > > # ausearch -c 'guix substitute' --raw | audit2allow -M my
> > > -guixsubstitute
> > > # semodule -X 300 -i my-guixsubstitute.pp
> > > ```
> > > 
> > > Trying the suggested commands also errors in:
> > > ```
> > > libsepol.hierarchy_add_type_callback: guix_daemon doesn't exist,
> > > guix_daemon.guix_daemon_t is an orphan
> > > libsepol.hierarchy_add_bounds: 1 errors found while adding hierarchies
> > > ```
> > > 
> > > So I don't really know where to go from there, any help appreciated.
> > > Thanks
> > > Alexis
> > >