Bug#887419: systemd: should depend on udev

[Russell Coker]

Package: systemd
Version: 232-25+deb9u1
Severity: normal

On a vm at linode.com /home wouldn't be mounted (mount would hang forever with
x-systemd.automount and abort leading to sulogin without it) and swap wouldn't
be enabled when udev wasn't installed.

udev was in "rc" state, so maybe a "dpkg --purge" would have made it work, I
needed the system working so couldn't do as many tests as I might have liked.

Also the serial console on /dev/ttyS0 (a virtual serial port that goes to the
Linode web interface) would not be enabled without udev installed.

It appears that correct operation requires udev installed.  A package
requirement would prevent minimal installations from breaking.

-- Package-specific info:

-- System Information:
Debian Release: 9.3
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.14.12-x86_64-linode92 (SMP w/8 CPU cores)
Locale: LANG=en_AU, LC_CTYPE=en_AU (charmap=UTF-8) (ignored: LC_ALL set to en_AU.UTF-8), LANGUAGE=en_AU (charmap=UTF-8) (ignored: LC_ALL set to en_AU.UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages systemd depends on:
ii  adduser         3.115
ii  libacl1         2.2.52-3+b1
ii  libapparmor1    2.11.0-3
ii  libaudit1       1:2.6.7-2
ii  libblkid1       2.29.2-1
ii  libc6           2.24-11+deb9u1
ii  libcap2         1:2.25-1
ii  libcryptsetup4  2:1.7.3-4
ii  libgcrypt20     1.7.6-2+deb9u2
ii  libgpg-error0   1.26-2
ii  libidn11        1.33-1
ii  libip4tc0       1.6.0+snapshot20161117-6
ii  libkmod2        23-2
ii  liblz4-1        0.0~r131-2+b1
ii  liblzma5        5.2.2-1.2+b1
ii  libmount1       2.29.2-1
ii  libpam0g        1.1.8-3.6
ii  libseccomp2     2.3.1-2.1
ii  libselinux1     2.6-3+b3
ii  libsystemd0     232-25+deb9u1
ii  mount           2.29.2-1
ii  procps          2:3.3.12-3
ii  util-linux      2.29.2-1

Versions of packages systemd recommends:
ii  dbus            1.10.24-0+deb9u1
ii  libpam-systemd  232-25+deb9u1

Versions of packages systemd suggests:
ii  policykit-1        0.105-18
pn  systemd-container  <none>
pn  systemd-ui         <none>

Versions of packages systemd is related to:
pn  dracut           <none>
pn  initramfs-tools  <none>
ii  udev             232-25+deb9u1

-- Configuration Files:
/etc/systemd/logind.conf changed [not included]

-- no debconf information