[Pkg-ime-devel] Bug#889053: How to fix dpkg prerm script

[Osamu Aoki]

Hi,

Thank you for tracing problem.  https://bugs.debian.org/889053

On Mon, Mar 19, 2018 at 10:35:51AM +0300, Philip Blagoveschensky wrote:
> Here's how I resolved the broken removal script. However I am not 100% sure
> that this cleans up all files.
> 
> --- /var/lib/dpkg/info/gir1.2-ibus-1.0:i386.prerm.BACKUP
> +++ /var/lib/dpkg/info/gir1.2-ibus-1.0:i386.prerm
> @@ -3,9 +3,9 @@
>  
>  # Automatically added by dh_python3:
>  if which py3clean >/dev/null 2>&1; then
> -	py3clean -p gir1.2-ibus-1.0 
> +	py3clean -p gir1.2-ibus-1.0:i386
>  else
> -	dpkg -L gir1.2-ibus-1.0 | perl -ne 's,/([^/]*)\.py$,/__pycache__/\1.*, or next; unlink $_ or die $! foreach glob($_)'
> +	dpkg -L gir1.2-ibus-1.0:i386 | perl -ne 's,/([^/]*)\.py$,/__pycache__/\1.*, or next; unlink $_ or die $! foreach glob($_)'
>  	find /usr/lib/python3/dist-packages/ -type d -name __pycache__ -empty -print0 | xargs --null --no-run-if-empty rmdir
>  fi

So this is multiarch problem.

py3clean from python3-minimal should be aware of arch.  OK.

If this is true, what is the right way for the package which works under
any combination of multiarch.  Should I change postinst to something like...
-----
ARCH=`dpkg-architecture -q DEB_TARGET_ARCH`
py3clean -p gir1.2-ibus-1.0:$ARCH
-----

Wait, I shouldn't make arbitrary changes here.  This is automatically
added by dh_python3.  So dh-python package should fix it.  The root
cause looks like there.

Piotr Ożarowski, what do you think about this bug report.

Regards,

Osamu