Repository seems to have moved to GitHub.
Please check if QtScript dependency is still needed.
Situation is a bit odd. Meanwhile "2.9.26" tag exists, but no release tarball, and still "official" download site soureforce contains "2.6.27" without source tarballs at all? https://sourceforge.net/projects/vym/files/ Debian maintainer apparently is inventing releases that do not exist? https://git.sven.stormbind.net/?p=sven/vym.git;a=shortlog