Bug#1104537: binfmtc: fails to install: postinst depends on update-binfmts

[Santiago Vila <sanvila@debian.org>]

El 1/5/25 a las 19:16, Paul Gevers escribió:
> Package: binfmtc
> Version: 0.17-3
> Severity: serious
> Justification: fails to install
>
> Hi,
>
> I just saw this on one of my hosts:
>
> $ sudo apt install -f
> Summary:
>    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 427
>    1 not fully installed or removed.
>    Space needed: 0 B / 140 GB available
>
> Setting up binfmtc (0.17-3) ...
> /var/lib/dpkg/info/binfmtc.postinst: 6: update-binfmts: not found
> dpkg: error processing package binfmtc (--configure):
>   installed binfmtc package post-installation script subprocess returned error exit status 127
> Errors were encountered while processing:
>   binfmtc
> needrestart is being skipped since dpkg has failed
> Error: Sub-process /usr/bin/dpkg returned an error code (1)

I think this was introduced in commit [226f58c], where the Depends
line was changed from "binfmt-support" to "binfmt-support | systemd".

Question for Michael: Is systemd supposed to provide another alternative
implementation of "update-binfmts"? Or maybe postinst should
do nothing when systemd is present?

Thanks.