Hi, On 13/09/16 18:37, Herbert Fortes wrote: > I have to update 4 debian/*.preinst files. > > Right now the files are like here[0]: > > > if dpkg --compare-versions "$2" lt "1.2.4+dfsg1-7" ; then > rm -rf /usr/share/doc/bogofilter || true > fi > > > [0] - > https://anonscm.debian.org/git/collab-maint/bogofilter.git/tree/debian/bogofilter.preinst > > > This approach has problems on an upgrade from Jessie to > Stretch[1].The recommendation today is to use 'dpkg-maintscript-helper', so > I should change to ("a real directory is switched to a symlink"): > > [1] - https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=832291 > > if dpkg-maintscript-helper supports dir_to_symlink 2>/dev/null; then > dpkg-maintscript-helper dir_to_symlink \ > /usr/share/doc/bogofilter bogofilter 1.2.4+dfsg1-8 bogofilter > -- "$@" > fi
Don't bother doing this. Use dh_installdeb and 'package.maintscript' files instead. You can then drop all the preinst files. >>From the manpage: > > "pathname(/usr/share/doc/bogofilter here) is the absolute name of the old > directory (the path will be a symlink at the end of the installation) and > new-target (bogofilter here) is the target of the new symlink at pathname. > It can either be absolute or relative to the directory containing pathname." > > But the symlink is created by dh_installdocs[1] already. I just want to > remove > the directory. Due to the way dpkg-maintscript-helper is implemented, the symlink created with dh_installdocs is ignored, so dpkg-maintscript-helper will create it for you. The manpage for dpkg-maintscript-helper also contains an explanation of why 'just removing the directory in preinst' can cause problems. I think putting this into 'bogofilter-bdb.maintscript' and something similar in other maintscript files should work: dir_to_symlink /usr/share/doc/bogofilter-bdb /usr/share/doc/bogofilter-common 1.2.4+dfsg1-8~ James
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