Structural decision (OQ-09 resolved): alkgit follows the alktty/ alktunnels template — a single published protocol crate on alkcall channels, no binary, no front doors. - ADR-010 supersedes ADR-001 (crate decomposition) and ADR-006 (http router factory); both marked Superseded - Single crate at repo root: Cargo.toml with gix feature (default-on backend implementations; wire layer compiles without it — gix-hash always-on with sha1 per the compile-time-rejected invariant), crates/ workspace deleted, src/lib.rs stub in place - doors.md replaces http.md/ssh.md/alkgitd.md: alkhttp git-feature sequencing (after first publish), alkssh requirement (fixed-grammar exec dispatch), native alk/git path, downstream assembly - backend.md replaces storage.md: GitRegistry/GitRefs/GitPackGen/ GitPackIngest traits (ingest validates, refs commits — single CAS home), gix feature encodes POC-2 prerequisites - transport.md reframed for the single crate; backend traits replace hook traits in the public API - OQ-09 resolved (all five sub-decisions in ADR-010), OQ-01 resolved (subsumed), OQ-03 narrowed to publish-freeze, OQ-08 narrowed to registry identity + vault placement, OQ-07 rescoped to the gix feature's registry impl - vision.md v2: single-binary/monorepo framing corrected as init-agent artifact; POC checklist marked complete - AGENTS.md + .opencode agent specs updated to the new shape Verification: cargo build (default + no-default-features), cargo test --all-features, clippy --all-features -D warnings, fmt --check all pass. Third review round: zero critical, all warnings/suggestions addressed (GitPackGen signature amended in ADR-004, stale anchors fixed, ADR-006 body tense normalized, CAS split stated, vision residuals cleaned).
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alkgit Research Index
Phase 0 (exploration) research. Feeds phase 1 (architecture).
| Doc | Topic | Status |
|---|---|---|
| vision.md | Vision, guiding principles, non-goals, phase-0 checklist | draft v2 (amended 2026-09-21) |
| gitoxide.md | gitoxide (gix) capability + version alignment | initial pass complete |
| alk-stack.md | alk stack fit, integration surface, gitea-lesson constraints | initial pass complete |
| git-protocol.md | Server-side git smart protocol inventory (what we own) | initial pass complete |
| reference-policy.md | Licenses, reference projects, reuse policy | complete |
| pocs.md | POC plan (what to validate before architecture commits) | planned |
Key findings so far
- gitoxide covers storage + pkt-line; the server half of the smart protocol is ours to write (gix-protocol/transport are client-side).
- Published gix 0.87.1 == local clone base; pin crates.io versions.
- alkcall
BiStreamis the natural substrate under pkt-line for both ssh and http paths. - The incompatible-license prior art confirms feasibility but contributes nothing; policy in reference-policy.md.
gixwithdefault-features = falserequires an explicit hash feature; workspace pinssha1with asha256passthrough feature everywhere.
Convergence criteria (phase 0 → phase 1)
Phase 0 is done when POC-1..3 have results and a recommended-approach
summary is written here (append below). Then the Architect produces
docs/architecture/ per sdd_process.
Convergence (2026-09-21): phase 0 gates all pass (POC-1/2/3 proceed).
Phase 1 opened with docs/architecture/; the structural decision is
ADR-010 — pure protocol crate following the alktty/alktunnels template
(the v1 "monorepo + alkgitd binary" framing in these research docs was an
init-agent artifact, amended in vision.md v2). POC-1 maps to the producer
half, POC-2 to the gix backend implementation, POC-3 to the stateless
substrate consumed by alkhttp's future git feature.