Changelog

0.2.1.0 — 2026-02-22

• Server: validateNarInfo wired into PUT handler — rejects malformed uploads with 400 Bad Request and collected validation errors
• Server: Cache-Control: public, max-age=31536000, immutable on narinfo and NAR GET responses for CDN edge caching
• Store: default priority changed from 30 to 50 (community cache fallback behind cache.nixos.org at 40)
• Seed action: fix round-trip validation to account for server-side signing; now verifies StorePath field, signature presence, and NAR fetchability
• Public binary cache documented with key and nix.conf instructions

0.2.0.0 — 2026-02-22

• New module: NovaCache.Validate — pure protocol validation layer
• ValidationError sum type with 10 constructors covering sizes, store paths, hash formats, content hashes, and Ed25519 signatures
• validateNarInfo — field semantic validation (non-negative sizes, parseable store paths/hashes/references), collects all errors instead of short-circuiting
• validateNarHash / validateFileHash — SHA-256 content hash verification against declared narinfo values
• validateSignature — Ed25519 signature verification against a trusted public key (at-least-one semantics, matching Nix behaviour)
• validateFull — composes all four stages, collecting errors across all
• 17 new tests (74 total across 9 groups)
• No new dependencies

0.1.0.0 — 2026-02-21

• Initial release (renamed from gb-nix-cache)
• Nix-base32 encoding/decoding
• SHA-256 hashing with Nix hash formatting
• Store path parsing and rendering
• NAR binary format serialization/deserialization
• NarInfo text format parsing/rendering
• Ed25519 signing and verification
• xz compression/decompression
• Filesystem storage backend
• Optional WAI cache server (behind server flag)
• Path traversal protection on all store operations
• Total port parsing (no partial read)
• 54 tests across 8 modules