Bug#538679: dclock: FTBFS with new source format 3.0 (quilt): removes .pc before quilt pop
To prepare a possible switch to the new source package format "3.0
(quilt)" , I converted all source packages and rebuilt the packages
afterwards to see what breaks, and dclock does break. To reproduce the
problem you can do this:
$ apt-get source dclock
$ mkdir -p dclock-2.2.2/debian/source
$ echo "3.0 (quilt)" >dclock-2.2.2/debian/source/format
$ dpkg-source -b dclock-2.2.2
$ dpkg-source -x dclock_2.2.2-1.dsc
$ cd dclock-2.2.2 && debuild -us -uc
In this process, if the .diff.gz contains changes to upstream files,
dpkg-source will have created a corresponding patch in
debian/patches/debian-changes-2.2.2-1 and will have registered that
patch in a quilt series (debian/patches/series, it is created if needed).
All the patches listed in the "series" file are applied directly during
the extraction (dpkg-source -x). quilt itself is used if available (and
will thus lead to the creation of the .pc directory), otherwise
dpkg-source applies the patches by itself. For more information about the
new source package format see the manual page dpkg-source(1).
In the case of dclock, the clean target removes the .pc directory
before calling quilt pop so quilt pop does nothing... Consider using
/usr/share/quilt/quilt.make instead of using (broken) custom code.