Tier 3 code improvements (from BUILD-SYSTEM-ASSESSMENT-2026-07-18 Part 6.2):
- Q2: Add run_command_with_retry() helper with exponential backoff (1s, 2s, 4s).
Wrap download_wget and git clone with 3 attempts. Git clone closure cleans
partial tmp dir between retries (git refuses non-empty clone targets).
- Q3: Preserve auto_deps.toml alongside dep_hashes.toml in binary store publish
(repo_builder.rs). Restore path prefers the preserved copy, falling back to
declared-depends-only reconstruction only when the preserved copy is absent
(e.g. published by an older cookbook). Preserves full ELF dynamic dep graph.
- Q4: DepHashes::read now returns Result<Option<Self>, String> discriminating
'missing' (legitimate first build, fall back to mtime) from 'corrupt' (loud
WARN + force rebuild). Closes a silent-swallow gap where a corrupt
dep_hashes.toml produced an incorrect mtime-fallback rebuild.
- Q6: Standardize error reporting in repo.rs nonstop path to {:#} format,
matching the pattern established in the earlier Tier 1 message commit.
Tier 1 message fixes (remaining items from assessment Part 5.3/5.4):
- M26: build-redbear.sh:569 '30-60 minutes' -> config-dependent range
- A6/A8: Makefile container messages add remediation hint
- B3: mk/config.mk sccache hint adds install guidance
- H2: mk/qemu.mk Unsupported ARCH lists supported values
- mk/redbear.mk comment 'fully-patched' -> 'versioned'
Verification: cargo check 0 errors, cargo test --lib 35/35 passed,
cargo clippy 0 new warnings vs baseline, make -n live + validate clean.
vasilito
de44b9324e