[Debian-med-packaging] Bug#891111: ctdconverter: missing build dependency on 2to3

[Adrian Bunk]

Source: ctdconverter
Version: 2.0-2
Severity: serious

https://buildd.debian.org/status/fetch.php?pkg=ctdconverter&arch=all&ver=2.0-2&stamp=1519291849&raw=0

...
   debian/rules override_dh_auto_build
make[1]: Entering directory '/<<PKGBUILDDIR>>'
2to3 --write --nobackups convert.py galaxy/ cwl/ common/
make[1]: 2to3: Command not found
make[1]: *** [debian/rules:23: override_dh_auto_build] Error 127