PoetryDependencyVersion colours

[chris48s]

Poetry ranges/constraints: https://python-poetry.org/docs/dependency-specification/

At the moment everything is blue

It would be nice if we could make this orange when

• version['allow-prereleases'] == true or
• range includes pre-releases

As far as I can tell, @renovate/pep440 doesn't expose any public function that can take a range and return the lower bound

• validRange() validates a range
• explain() won't parse a range
• minSatisfying() takes an explicit list of versions and tells us the lowest one that satisfies the range

semver can answer that question, and poetry constraints are mostly semver-parseable e.g:

> const semver = require('semver')
undefined

> semver.validRange('^1')
'>=1.0.0 <2.0.0-0'
> semver.validRange('>=2')
'>=2.0.0'
> semver.validRange('~2.7 || ^3.2')
'>=2.7.0 <2.8.0-0||>=3.2.0 <4.0.0-0'
> semver.validRange('3.*')
'>=3.0.0 <4.0.0-0'

but not 100% e.g:

> semver.validRange('>=1.11,<4.0')
null
> semver.validRange('==20.8b1')
null