fixable by making the .pot target in po/makefile actually know about the source dependencies, and only regenerate when the .pot's out of date. Since the generation is done in ./debian/rules clean which is a prereq for source package generation, that would ensure it's always up to date in the .tar.gz and doesn't have to be rebuilt at package time.
However, apt's po/makefile is a very NIH bit of make. It's probably a bit of work to replace this with the standard gettextize boilerplate.
fixable by making the .pot target in po/makefile actually know about the source dependencies, and only regenerate when the .pot's out of date. Since the generation is done in ./debian/rules clean which is a prereq for source package generation, that would ensure it's always up to date in the .tar.gz and doesn't have to be rebuilt at package time.
However, apt's po/makefile is a very NIH bit of make. It's probably a bit of work to replace this with the standard gettextize boilerplate.