Re: [gentoo-user] a few blockers I can't figure out

[covici@ccs.covici.com]

Alan McKinnon <alan.mckinnon@gmail.com> wrote:

> On 31/08/2015 18:54, covici@ccs.covici.com wrote:
> >> The words make sense, the meaning doesn't :-)
> >> > 
> >> > It looks like fail2ban wants systemd without python support, but the
> >> > true reason is still hidden. The fail2ban ebuild has this:
> >> > 
> >> > RDEPEND="
> >> >         ...
> >> >         systemd? ( $(python_gen_cond_dep '|| (
> >> >                 dev-python/python-systemd[${PYTHON_USEDEP}]
> >> >                 sys-apps/systemd[python(-),${PYTHON_USEDEP}]
> >> > 
> >> > 
> >> > I'm thinking maybe you have a specific portage entry that's getting in
> >> > the way. What are your results for:
> >> > 
> >> > emerge --info
> >> > grep -r python /etc/portage
> >> > grep -r systemd /etc/portage
> > Just to let you know, most of the python entries were mandated by
> > portage, certainly the systemd one.
> 
> 
> I'm having a hard time figuring out what is making portage do this.
> I also figure you're OK with a downgraded systemd meanwhile, but just
> for kicks, lets test my theory: If you run this, does portage offer to
> upgrade systemd?
> 
> 
> USE="-python" emerge -pv systemd

Well, here is what I got
[ebuild     U  ] sys-apps/systemd-225:0/2::gentoo [219_p112:0/2::gentoo]
USE="acl kdbus* kmod lz4 pam policykit seccomp ssl -apparmor -audit
-cryptsetup -curl -elfutils -gcrypt -gnuefi% -http -idn -importd -lzma
-nat -qrcode (-selinux) -sysv-utils {-test} -vanilla -xkb (-doc%*)
(-gudev%) (-introspection%*) (-python%*)
(-terminal%)" ABI_X86="32 (64) (-x32)"
PYTHON_SINGLE_TARGET="(-python2_7%*) (-python3_3%) (-python3_4%)"
PYTHON_TARGETS="(-python2_7%*) (-python3_3%) (-python3_4%*)" 3,788 KiB

Total: 1 package (1 upgrade), Size of downloads: 3,788 KiB

!!! Multiple package instances within a single package slot have been
    pulled
!!! into the dependency graph, resulting in a slot conflict:

sys-apps/systemd:0

  (sys-apps/systemd-225:0/2::gentoo, ebuild scheduled for merge) pulled
  in by
    sys-apps/systemd (Argument)

  (sys-apps/systemd-219_p112:0/2::gentoo, installed) pulled in by
    sys-apps/systemd[python(-),python_targets_python2_7(-)?,python_single_target_python2_7(+)?,python_targets_python3_3(-)?,python_single_target_python3_3(+)?,python_targets_python3_4(-)?,python_single_target_python3_4(+)?]
    required by (net-analyzer/fail2ban-0.9.3:0/0::gentoo, installed)




It may be possible to solve this problem by using package.mask to
prevent one of those packages from being selected. However, it is also
possible that conflicting dependencies exist such that they are
impossible to satisfy simultaneously.  If such a conflict exists in
the dependencies of two different packages, then those packages can
not be installed simultaneously. You may want to try a larger value of
the --backtrack option, such as --backtrack=30, in order to see if
that will solve this conflict automatically.

For more information, see MASKED PACKAGES section in the emerge man
page or refer to the Gentoo Handbook.
 

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici
         covici@ccs.covici.com