---
slug: v21-dialects-spec
title: Draft three v2.1 dialects into §6 + profile-parser tolerance
date: 2026-05-24
branch: sama-v2-1-dialects-drafted
pr_number: 31
merge_sha: f244dbb
status: lossy
related_posts: [sama-v2-rust-project-ripgrep, sama-v2-go-project-dive]
---

**Recovered opening (from prior-session conversation summary, paraphrased):**

> Goal: Promote the three v2.1 dialects (directory-layout, inline-tests, declarative-exemption) from "proposed in blog" to drafted §6 extensions in /sama/v2. The verifier still treats this repo bit-identically — opt-in profile flags only, no behavior change for non-adopters.

**What is preserved from the original /goal:** only the opening sentence above, recovered from the prior-session conversation summary at the start of this conversation. The full *Done when* clauses, *Constraints (anti-fudge)*, and *Load-bearing files* sections did not survive summarization.

**What landed:** §6.A umbrella + §6.1/§6.2/§6.3 subsections in `content/sama/v2.md`, each with a 5-part structure (profile syntax / what it relaxes / property preserved / preservation mechanism / falsifiable cross-repo experiment). `ProfileSpec` gained optional `layout`, `tests`, `atomicExemption` fields with allowed-value validation in the TOML parser. 12 new parser tests landed; this repo's `sama.profile.toml` stayed unchanged so the §4 verifier's verdict was bit-identical. See [PR #31](https://github.com/syntaxai/tdd.md/pull/31) for the full diff.