Bug#985339: nauty: unhandled symlink to directory conversion: /usr/share/doc/PACKAGE

[Andrius Merkys]

Hello,

On 2021-03-16 12:39, Andreas Beckmann wrote:
> 1m40.0s ERROR: FAIL: silently overwrites files via directory symlinks:
>   /usr/share/doc/nauty/changelog.Debian.gz (nauty) != /usr/share/doc/libnauty2/changelog.Debian.gz (libnauty2:amd64)
>     /usr/share/doc/nauty -> /usr/share/doc/libnauty2
>   /usr/share/doc/nauty/changelog.gz (nauty) != /usr/share/doc/libnauty2/changelog.gz (libnauty2:amd64)
>     /usr/share/doc/nauty -> /usr/share/doc/libnauty2
>   /usr/share/doc/nauty/changes24-27.txt.gz (nauty) != /usr/share/doc/libnauty2/changes24-27.txt.gz (libnauty2:amd64)
>     /usr/share/doc/nauty -> /usr/share/doc/libnauty2
>   /usr/share/doc/nauty/copyright (nauty) != /usr/share/doc/libnauty2/copyright (libnauty2:amd64)
>     /usr/share/doc/nauty -> /usr/share/doc/libnauty2

I am trying to debug the issue, however, unsuccessfully. From the
attached log I gather that the break happens upon upgrading from buster
(2.6r10+ds-1) to bullseye (2.7r1+ds-1):

1m38.6s DUMP:
  PIUPARTS_DISTRIBUTION_PREV=buster
  PIUPARTS_DISTRIBUTION=bullseye

Affected binary packages are nauty and libnauty. The former has recently
(in 2.7r1+ds-1) switched from shipping a directory symlink to a real
directory, and this is accommodated in debian/nauty.maintscript:

symlink_to_dir /usr/share/doc/nauty libnauty2 2.7r1+ds-1~

>From this I gather that upgrades of nauty <= 2.7r1+ds-1 to this new
version should trigger the replacement of a symlink with real directory
before placing the files inside. Or am I wrong?

Best,
Andrius