Add support for known external tools on GNU Guix.

4 jobs for master in 16 minutes and 30 seconds (queued for 9 seconds)
Status Job ID Name Coverage
  Test
failed #181201
allowed to fail
stable-bpo

00:01:39

passed #181200
testing

00:16:29

88.0%
failed #181202
allowed to fail
ubuntu-devel

00:09:43

passed #181199
unstable

00:16:04

88.0%
 
Name Stage Failure
failed
ubuntu-devel Test
update-initramfs: diverted by livecd-rootfs (will be called later)
invoke-rc.d: could not determine current runlevel
invoke-rc.d: policy-rc.d denied execution of start.
Created symlink /etc/systemd/system/sysinit.target.wants/blk-availability.service → /lib/systemd/system/blk-availability.service.
Created symlink /etc/systemd/system/sysinit.target.wants/lvm2-monitor.service → /lib/systemd/system/lvm2-monitor.service.
Created symlink /etc/systemd/system/sysinit.target.wants/lvm2-lvmpolld.socket → /lib/systemd/system/lvm2-lvmpolld.socket.
Setting up adwaita-icon-theme-full (3.32.0-1ubuntu1) ...
Setting up icoutils (0.32.3-2.1) ...
Setting up dh-strip-nondeterminism (1.1.2-1) ...
Setting up libmono-corlib4.5-cil (5.18.0.240+dfsg-2ubuntu2) ...
failed
stable-bpo Test
               Depends: unzip but it is not going to be installed
Depends: xmlbeans but it is not going to be installed
Depends: xxd but it is not going to be installed or
vim-common but it is not going to be installed
builddeps:essentials : Depends: build-essential but it is not going to be installed

W: Encountered an unexpected section with 1 fields: Message: (UNSAT) No Solutions according to the given preferences
E: Broken packages
ERROR: Job failed: exit code 1