Comment 5 for bug 1871214

Rodrigo, I have tried to make it work using --with-systemd flag passed in d/rules, but every time I make a fix something else backfires. I doubt it has ever been used before.

As a sidenote: we are lagging a lot behind upstream (they're at 2.4.4 already, we're at 1.3.4 and so is Debian). But we can't fix this for f anymore.

I discussed this with ddstreet and we need to get Debian opinion on this. What could be tried is one of the following (for example):
1) debian/nfs-kernel-server.install should install from debian/tmp/lib/system/systemd-generators, and systemd/Makefile.am should pull genexec_PROGRAM Sout of INSTALL_SYSTEMD and also change /usr/lib/systemd/systemd-generators to /lib/...
or
2) use the build location to install from in nfs-kernel-server.install, and update systemd/Makefile.am to only build (not install) the generator, like:

 if INSTALL_SYSTEMD
+genexec_PROGRAMS = nfs-server-generator
 install-data-hook: $(unit_files)
  mkdir -p $(DESTDIR)/$(unitdir)
  cp $(unit_files) $(DESTDIR)/$(unitdir)
+else
+noinst_PROGRAMS = nfs-server-generator
 endif

I'm going to offer a MR to Debian and see what they say about it.