Bug 598523

Summary:	[Future EAPI] Version operators that force a specific version and compare revisions (alike GLSA)
Product:	Gentoo Hosted Projects	Reporter:	Michał Górny <mgorny>
Component:	PMS/EAPI	Assignee:	Package Manager Specification <pms>
Status:	CONFIRMED ---
Severity:	normal	CC:	esigra, kuraga333, sam, security
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	174380, 598525

Description Michał Górny archtester

2016-10-30 13:25:34 UTC

Not sure if we have a 'package' use case for it but opening for completeness. GLSAs have four revision range operators: rlt, rle, rge, rgt (but no req). Those operators force a specific version like =, but allow for specific revision ranges.

For example, rge 1.2-r3 is equivalent to ( ~1.2 >=1.2-r3 ). Having additional operators in GLSAs make me feel a little uneasy, though I guess that's because GLSAs can't use complex dependency specifications like we can (however, in our case the complex thing is not fool-proof either, thanks to slots).

Few minor notes:

- rlt 1.2 (-r0) never matches,

- rge 1.2 (-r0) is equivalent to our ~1.2 (GLSAs don't have explicit ~).