On Sat, 2017-12-02 at 06:06 +0200, Victor Porton wrote: > For this I need the upstream versions of "python2.7" and "xsltproc".
The upstream version of a Debian package can be deterministically extracted from the package version, see https://www.debian.org/doc/debi an-policy/#s-f-version for the format. TL;DR: remove everything before the first colon (":") if there is one. The remove everything after the final hyphen ("-"), again if there is one. I expect you will find libraries for doing this in various languages in the archive (I'm sure there will be Python and Perl ones at least). python2.7 on my system has version 2.7.13-2, so the upstream version is 2.7.13. xsltproc is 1.1.29-2.1, so upstream 1.1.29. Ian.
