KEYWORDS filtering in solver

[kolkov]

Problem

GRPM solver currently doesn't filter packages by KEYWORDS. This means unkeyworded packages (like live/9999 ebuilds) are selected even though Portage would filter them out.

Example: sys-devel/gcc-16.0.9999 has no KEYWORDS, so Portage won't select it by default. But GRPM does.

Root Cause

The pkg.Package struct doesn't have a Keywords field, and there's no keyword filtering in the solver.

Expected Behavior

Solver should:

1. Parse KEYWORDS from ebuild
2. Filter packages that don't have KEYWORDS matching ACCEPT_KEYWORDS from make.conf
3. By default, accept only stable keywords (e.g., amd64)
4. With ~amd64 in ACCEPT_KEYWORDS, also accept testing packages

Implementation Plan

1. Add Keywords []string field to pkg.Package
2. Parse KEYWORDS in ebuild parser
3. Add KeywordManager similar to MaskManager
4. Integrate keyword filtering in solver

Related

• v0.8.1 implements package.mask filtering (Solver ignores package.mask - selects masked packages (e.g., gcc-16) #46)
• This issue tracks the missing keyword filtering

[kolkov]

Implemented in PR #47 as part of v0.8.1 release.

KEYWORDS filtering is now fully functional:

• Solver filters packages by KEYWORDS vs ACCEPT_KEYWORDS
• Auto-detects system architecture
• Tested: GRPM now selects gcc-15.2.1 (same as Portage) instead of unkeyworded gcc-16.0.9999