[Pkg-zsh-devel] Bug#860033: Bug#860033: /usr/bin/zsh gone after dist-upgrade

[Axel Beckert]

Control: tag -1 + moreinfo unreproducible

Hi ilf,

ilf wrote:
> On a jessie box, I had /usr/bin/zsh as my shell in /etc/passwd.

Perfectly fine.

> After a dist-upgrade to stretch, that binary is gone.

That shouldn't happen.

> The package usrmerge was not installed during dist-upgrade.

Thanks for the info. That would have been my next question, because if
there's a reason for this bug, it's surely related to making the
package work with usrmerge. Because previously /usr/bin/zsh was simply
a symlink inside the package itself with no intervention via
maintainer scripts needed. *sigh*

> RC, because this effectively locked me out of the system.

Definitely RC, but I've already dist-upgraded a few boxes and this
never happened to me. So I wonder under which circumstances this can
happen.

> If this change is intentional, […]

It is not. See /var/lib/dpkg/info/zsh.postinst:

     5  case "$1" in
     6      (configure)
     7          add-shell /bin/zsh
     8          add-shell /usr/bin/zsh
     9
    10          # New hardcoded symlinks which unfortunately can't be shipped inside
    11          # the package itself since some people want to merge /bin and /usr/bin
    12          # against FHS and all Unix tradition.
    13          if [ ! -e /usr/bin/zsh -a ! -L /usr/bin/zsh ]; then
    14            ln -s /bin/zsh /usr/bin/zsh
    15          fi
    16      ;;

So I wonder why that call in line 14 did either not get called at all
or failed.

A few more questions:

* Was the dist-upgrade already finished when you checked this?
  (Wondering if this is another incarnation of
  https://bugs.debian.org/841048)

* Is the zsh package or zsh-common in a "broken" state? Can you send
  us the output of "dpkg -l zsh\*"?

* Do you still have the output of the dist-upgrade? If so, could grep
  for "zsh" in that log and send us that output?

* If you don't have that output anymore, please do an "apt-get install
  --reinstall zsh 2>&1 | tee zsh-install.log" and send us that log.

		Regards, Axel
-- 
 ,''`.  |  Axel Beckert <abe at debian.org>, http://people.debian.org/~abe/
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