renovate/lib/modules/versioning/rez/readme.md

rez versioning was developed to support the rez Package Manager. It's based on Semantic Versioning but includes its own concept of ranges.

Use of dots

A range is expressed with dots 1.2..2 means >=1.2.x <2.0.0.

No exact versions unless using two equals ==

In rez, 1.2.3 doesn't mean "exactly 1.2.3", it actually means >= 1.2.3 <1.2.4. If you want to use an exact version use two equal characters, like this: ==1.2.3.

Use of pipes

rez uses pipes as an OR operator, 2.7..3|4 means >=2.7 <3 OR 4.x.x.

This has not been implemented yet. The current iteration of rez versioning does not support pipes yet.