Bug#836529: hurd: won't boot if /etc/hurd/runsystem is runsystem.gnu, because runsystem.hurd does not exist

[Kalle Olavi Niemitalo <kon@iki.fi>]

Package: hurd
Version: 1:0.8.git20160826-1
Severity: normal

The hurd package makes /etc/hurd/runsystem a symlink that is
managed with the alternatives system.  The default is
runsystem.sysv, and runsystem.gnu is also available.

However, if I use 'update-alternatives --config runsystem' to
select runsystem.gnu, then the system fails to boot, because
/etc/hurd/runsystem.gnu runs /hurd/init, which requires
/etc/hurd/runsystem.hurd, which does not exist.

I tried to fix this by installing daemons/runsystem.hurd from the
Debian Hurd source tree to /etc/hurd/runsystem.hurd and making it
executable.  That helped but there were still several problems:

1. runsystem.hurd runs /libexec/rc, which does not exist.
   /etc/hurd/rc should be used instead.

2. runsystem.hurd runs /libexec/runttys, which does not exist.
   /sbin/runttys should be used instead.

3. runsystem.hurd sets PATH=/bin:/sbin, which omits /usr/bin and
   /usr/sbin.  The login shell apparently inherits that that
   setting and uses it for some startup script, causing errors:
   -bash: id: command not found
   -bash: [: : integer expression expected

4. The file systems listed in /etc/fstab were not automatically
   mounted.  I suppose I could work around this by setting them as
   passive translators, but then it would be more difficult to
   ensure that a user won't cause the file-system translator to
   start while root is running fsck on the store.

5. dhclient did not start automatically.  I suppose I could set a
   fixed IP address instead, or edit some startup script.

Please make the hurd package install runsystem.hurd to /etc/hurd/,
and patch it to fix problems 1 to 3.  That way, runsystem.gnu
will at least work well enough to let root log in and either
switch back to runsystem.sysv or fix problems 4 and 5 locally.

Alternatively, runsystem.gnu could be removed from the package
and unregistered from the alternatives system.

-- System Information:
Debian Release: stretch/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: hurd-i386 (i686-AT386)

Kernel: GNU-Mach 1.7+git20160809-486-dbg/Hurd-0.8
Locale: LANG=fi_FI.UTF-8, LC_CTYPE=fi_FI.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: sysvinit (via /sbin/init)

Versions of packages hurd depends on:
ii  hurd-libs0.3  1:0.8.git20160826-1
ii  libblkid1     2.28.1-1
ii  libbz2-1.0    1.0.6-8
ii  libc0.3       2.23-5
ii  libdaemon0    0.14-6
ii  libncursesw5  6.0+20160625-1+b1
ii  libtinfo5     6.0+20160625-1+b1
ii  libx11-6      2:1.6.3-1+b1
ii  netdde        0.0.20150828-3
ii  sysv-rc       2.88dsf-59.8
ii  xkb-data      2.17-1
ii  zlib1g        1:1.2.8.dfsg-2

Versions of packages hurd recommends:
pn  bf-utf-source  <none>

Versions of packages hurd suggests:
pn  hurd-doc  <none>

-- Configuration Files:
/etc/default/hurd-console changed:
ENABLE='false'
DISPLAY='-d vga'
KBD='-d pc_kbd'
if [ -f /etc/default/keyboard ]
then
  . /etc/default/keyboard
fi
[ -z "$XKBLAYOUT" ] || KBD="$KBD --keymap $XKBLAYOUT"
KBD_REPEAT='--repeat=kbd'
MOUSE='-d pc_mouse --protocol=ps/2'
MOUSE_REPEAT='--repeat=mouse'


-- no debconf information