Pb with version comparison

[Yadd <yadd@debian.org>]

Hi all,

during an update I encountered a problem:
 * package node-is-plain-object breaks gulp < 4.0.2-9 (both already
   migrated to testing)
 * I created new gulp: 4.0.2+~cs54.26.36-1
 * gulp-4.0.2+~cs54.26.36-1 is considered as newer than 4.0.2-9 during
   install which is logical
 * When launching another build (schroot) with this new package, build
   failed because dpkg considers 4.0.2+~cs54.26.36-1 < 4.0.2-9 and
   refuse to install gulp-4.0.2+~cs54.26.36-1 with node-is-plain-object

Did I something wrong or is there a bug somewhere else?

To workaround, I modified node-is-plain-object "Breaks" field for now

Cheers,
Yadd