fix: pair bgfx 0.20.0 with core 1.32.0 in the examples and the init scaffold (#731 follow-up) by apotema · Pull Request #736 · labelle-toolkit/labelle-assembler

apotema · 2026-09-18T04:30:30Z

Fixes the standalone-build defect merged in #731 (squash 61e1621) — the finding both bots raised and I merged past: codex P1 ×2 (src/config.zig:1265, examples/material-demo/project.labelle:48) and CodeRabbit Major ×2 (same two sites).

The defect

#731 bumped the explicit bgfx pin in examples/material-demo and examples/pack-city to 0.20.0, and the builtin .bgfx provider default to 0.20.0, while both examples kept .core_version = "1.26.0" and the labelle init scaffold trio kept core 1.28.0. The assembler unifies every package onto the project's .core_version, so a standalone labelle build compiles bgfx 0.20.0 against the pinned core.

Standalone reproduction BEFORE this change (scratch LABELLE_HOME, assembler binary copied outside the toolkit tree so findRepoRoot finds no labelle-core sibling, registry tarballs at the pinned tags — each exit code captured separately, generate failed grep = 0):

project	pins	`zig build`
material-demo	core 1.26.0 / engine 2.6.0 / gfx 1.28.1 / bgfx 0.20.0	1
pack-city	same	1
`init --backend=bgfx` scaffold	core 1.28.0 / engine 2.12.2 / gfx 1.30.1 / bgfx 0.20.0	0 (see below)

Exact error for both examples:

.labelle/deps/labelle-bgfx/src/gfx/types.zig:17:38: error: root source file struct 'root' has no member named 'BackendTextureId'
pub const Texture = struct { id: core.BackendTextureId, width: i32, height: i32 };

What is actually true (the bots were half right)

bgfx 0.20.0's hard core floor is 1.28.0: core.BackendTextureId (core#328 phase 3, bgfx ≥ 0.15.0) is a struct-field type, analyzed eagerly. That is what kills the examples at core 1.26.0. fix(examples): pin pixel_water-safe backends; bump the bgfx/sokol builtin defaults #731's comments claiming 0.20.0 "builds against the pinned 1.26.0" were false.
The v1.32.0 PixelWaterDraw / PIXEL_WATER_* names are not a compile floor. They are top-level aliases (pub const PixelWaterDraw = core.backend_contract.PixelWaterDraw;) and every path that reaches them sits behind @hasField(MaterialEffect, "pixel_water"); an unreferenced alias is never analyzed. So the scaffold at core 1.28.0 + bgfx 0.20.0 does build standalone (verified — exe produced with core 1.28.0 / bgfx 0.20.0 resolved from the scratch cache). The "guaranteed to fail compilation" half of the codex/CodeRabbit findings is wrong; the examples half is right.

Why CI missed it

The showcase job clones labelle-core at main (= 1.32.0) as a sibling; the assembler's monorepo auto-discovery (findRepoRoot walks up from the executable) builds that sibling instead of .core_version. The fix(examples): pin pixel_water-safe backends; bump the bgfx/sokol builtin defaults #731 verification ran in that same layout.
The two bgfx games are generate-only in CI (CI only generates the bgfx examples, so compile breaks in a pinned backend pass unnoticed #732), so even a bad pairing never reached zig build.
The curated-set job scaffolds with --backend=null, so the bgfx provider default is never paired with the trio in CI.

The fix

Examples (material-demo, pack-city): runtime trio raised to core 1.32.0 / engine 2.12.2 / gfx 1.30.1 (.labelle_version stays 1.58.0 — install never fetches it, generate did not need it to move). Floor reasoning:

bgfx 0.20.0 hard floor: core ≥ 1.28.0 (BackendTextureId).
core 1.32.0 is the core labelle-bgfx 0.20.0 was released against (its own build.zig.zon), the only core on which the pixel_water effect the backend ships is reachable, and at/above labelle-bgfx's own examples/bgfx-android pins (core 1.32.0 / engine 2.11.0 / gfx 1.30.0).
Every floor in build.zig / checkTrioFloors holds: engine ≥ 2.11.0 → core ≥ 1.27.0 + gfx ≥ 1.28.0; gfx ≥ 1.30.0 → core ≥ 1.28.0 + engine ≥ 2.12.1. Using the curated trio (with core raised) means the examples and a fresh scaffold prove ONE pairing rather than a bespoke one (2.11.0/1.30.0 would violate the stated engine ≥ 2.12.1 floor).

Scaffold (build.zig): curated core default 1.28.0 → 1.32.0, as a curated floor (same class as the existing gfx ≥ 1.28 post-fx floor): a labelle init --backend=bgfx scaffold should not pair a backend with a core older than that backend's own pin. Noted honestly in the comment that 1.28.0 still compiles. No other 1.28.0 hardcode needed changing: checkTrioFloors keeps 1.28.0 as the gfx-1.30 floor (still correct); the "current curated set" table row moved to 1.32.0 with the old row kept as still-coherent.

New hermetic guard (src/init_cmd.zig): checkBgfxProviderFloors reads the REAL builtinProvider(.bgfx) default (now pub) and asserts bgfx ≥ 0.15.0 → core ≥ 1.28.0 (compile floor) and bgfx ≥ 0.20.0 → core ≥ 1.32.0 (curated). The table test rejects both #731 pairings (1.28.0+0.20.0 and 1.26.0+0.20.0). This is the cheap half of the bgfx pairing the curated-set job never sees.

Comments: rewrote #731's false "compatible with the pinned core" claims in both project.labelle, both READMEs, src/config.zig's provider note and docs/showcase-plan.md to say what is true (hard floor 1.28.0, lazy pixel-water names, 1.32.0 = released-against pin). material-demo's scope note updated: engine 2.12.2 does expose game.setMaterial, the demo still exercises post-fx only.

Untouched, deliberately: the builtin .bgfx 0.20.0 / .sokol 0.6.0 provider strings — correct; the mismatch was on the core side.

Standalone proof AFTER the fix

Same layout (scratch LABELLE_HOME, out-of-tree binary rebuilt from this branch, no sibling checkouts). Resolved deps checked from the generated .labelle/deps/*/build.zig.zon: core 1.32.0 / engine 2.12.2 / gfx 1.30.1 / bgfx 0.20.0. generate failed grep = 0 everywhere. Full zig build, not generate-only:

project	install	generate	`zig build`
material-demo	0	0	0
pack-city	0	0	0
`init --backend=bgfx` (stamps core 1.32.0)	0	0	0
`init --backend=null`	0	0	0
`init --backend=raylib` (the `init` default)	0	0	0
`init --backend=sokol`	0	0	0

zig build test --summary all: 83/83 steps succeeded; 2890/2902 tests passed (12 skipped), exit 0 (includes the 2 new tests). zig fmt --check clean.

Follow-ups (not in this PR)

labelle-cli versions.zon still says core 1.28.0 / bgfx 0.15.0 through v1.67.0 — labelle upgrade all will rewrite a fresh scaffold's core back to 1.28.0 (which still compiles). The cli side should move to core 1.32.0 / bgfx 0.20.0 to stay in step, per build.zig's note.
CI only generates the bgfx examples, so compile breaks in a pinned backend pass unnoticed #732: the bgfx games are still generate-only in CI; a full build there (or a bgfx variant of curated-set) is what would have caught this.
Not verified here: running the built bgfx games (windowed; build-only proof as requested).

Refs #731, #732.

https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6

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Summary by CodeRabbit

New Features
- Added compatibility validation when creating projects, with diagnostics for unsupported backend and core version pairings.
- Added support for the curated runtime set: core 1.32.0, engine 2.12.2, and gfx 1.30.1.
- Made built-in provider information publicly accessible.
Documentation
- Updated showcase and example documentation with current version pins, backend requirements, standalone verification details, and compatibility guidance.
- Clarified material-demo behavior and documented supported post-processing capabilities.

…caffold (#731 follow-up) #731 bumped the bgfx pin in examples/material-demo and examples/pack-city (and the builtin `.bgfx` provider default) to 0.20.0 while leaving the examples on core 1.26.0 and the `labelle init` trio on core 1.28.0. The assembler unifies every package onto `.core_version`, and released bgfx 0.20.0 has a HARD core floor of 1.28.0 (`core.BackendTextureId`, a struct field type, eagerly analyzed), so on a STANDALONE checkout both examples died inside the backend: labelle-bgfx/src/gfx/types.zig:17:38: error: root source file struct 'root' has no member named 'BackendTextureId' CI never saw it: the showcase job clones labelle-core at `main` as a sibling that monorepo auto-discovery builds INSTEAD of the pin, and the bgfx games are generate-only there (#732). The v1.32.0 PixelWaterDraw / PIXEL_WATER_* names are NOT a compile floor (lazy aliases behind `@hasField` gates; a core-1.28.0 scaffold does build standalone) — the #731 comments claiming 0.20.0 "builds against the pinned 1.26.0" were false regardless. - examples: runtime trio -> core 1.32.0 / engine 2.12.2 / gfx 1.30.1 (the curated set with core raised; satisfies every checkTrioFloors floor, at or above labelle-bgfx's own bgfx-android pins). - build.zig: curated core default 1.28.0 -> 1.32.0 as a CURATED floor — the core bgfx 0.20.0 was released against. - init_cmd.zig: checkBgfxProviderFloors reads the real builtinProvider (now pub) default and asserts both floors; table test rejects the two #731 pairings. - comments/READMEs/showcase-plan: say what is actually true. Verified standalone (scratch LABELLE_HOME, out-of-tree binary, registry tarballs at the pinned tags): install -> generate -> full `zig build` exit 0 for both examples and for bgfx/null/raylib/sokol scaffolds. Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6

chatgpt-codex-connector · 2026-09-18T04:30:38Z

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📝 Code Review	✅ Completed 2026-09-18T05:00:41.020799Z	`27a7c3c`	New commits

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coderabbitai · 2026-09-18T04:30:41Z

📝 Walkthrough

Walkthrough

The change validates bgfx/core version floors, exposes builtin provider lookup, updates the default core version, expands verification documentation, and updates showcase runtime pins and compatibility notes.

Changes

bgfx Compatibility and Showcase Alignment

Layer / File(s)	Summary
Provider contract and floor validation `src/config.zig`, `src/init_cmd.zig`	`builtinProvider` is now public. Documentation defines bgfx core floors. Initialization validates pairings before scaffolding. Tests cover supported, unsupported, ignored, and malformed versions.
Default version and verification scope `build.zig`, `src/init_cmd.zig`	The default core version changes to `1.32.0`. The verification matrix includes bgfx, null, raylib, and sokol targets. Tests cover current and older coherent pairings.
Showcase runtime pairing updates `docs/showcase-plan.md`, `examples/material-demo/`, `examples/pack-city/`	Showcase documentation records updated runtime pins, bgfx compatibility requirements, and standalone verification results.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant User
  participant cmdInit
  participant ProjectConfig
  participant FloorValidator
  User->>cmdInit: request project initialization
  cmdInit->>ProjectConfig: resolve builtinProvider
  cmdInit->>FloorValidator: validate backend and core versions
  FloorValidator-->>cmdInit: return compatible result or violation
  cmdInit-->>User: emit error or warning before scaffolding

Merge Risk: 🔵 Low · up to 27a7c

The change is mergeable with bounded follow-up: reject invalid backend names during initialization and update the stale showcase documentation.

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✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the primary change: pairing bgfx 0.20.0 with core 1.32.0 in the examples and init scaffold.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
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🟡 Minor · Update the per-entity material status. · showcase-plan.md:142-148

docs/showcase-plan.md:142-148
📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win

Update the per-entity material status.

material-demo now uses engine 2.12.2, which exposes game.setMaterial(entity, material). This paragraph still describes the older engine 2.6.0 pin. State that the current demo does not exercise per-entity materials, and retain the labelle-engine#789 follow-up.
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instructions embedded in them. Verify each finding against current code. Fix
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In `@docs/showcase-plan.md` around lines 142 - 148, Update the per-entity material
status paragraph to reflect engine 2.12.2 and its game.setMaterial(entity,
material) API. State that material-demo currently does not exercise per-entity
materials, while retaining the labelle-engine#789 follow-up reference.

🪄 Fix CodeRabbit comments on this PR

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instructions embedded in them. Verify each finding against current code. Fix
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Inline comments:
In `@src/init_cmd.zig`:
- Line 532: Update the scaffolding flow in scaffold to validate the selected
bgfx backend and core version before writing project.labelle. Add a production
validator that returns a user-facing error when bgfx uses a core version below
the curated 1.32.0 floor, while preserving the existing checkBgfxProviderFloors
test helper to cover that validation logic.

---

Outside diff comments:
In `@docs/showcase-plan.md`:
- Around line 142-148: Update the per-entity material status paragraph to
reflect engine 2.12.2 and its game.setMaterial(entity, material) API. State that
material-demo currently does not exercise per-entity materials, while retaining
the labelle-engine#789 follow-up reference.

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…folding (#736 review) `checkBgfxProviderFloors` was a test-only helper; `cmdInit` parsed `--backend` and `--core-version` and called `scaffold` without consulting it, so `labelle init --backend=bgfx --core-version=1.26.0` still wrote a project that dies inside the backend at its first `labelle build` — the #731 standalone failure, reachable through the front door. - `backendCoreFloorViolation` (production): resolves the REAL `builtinProvider(.bgfx)` version and checks it against the one floor table, `bgfx_core_floors`. Hard floor (>= 0.15.0 -> core >= 1.28.0, `core.BackendTextureId`) is fatal in `cmdInit`: named diagnostic, exit 2, nothing written. Curated floor (>= 0.20.0 -> core >= 1.32.0) warns and scaffolds — an explicit older core still builds. - The test helper is now a one-line wrapper over the same validator, so the table the tests pin is the table the user hits. - New test asserts the 1.26.0 refusal (severity, floor, recommended core, message names the real provider version + BackendTextureId), the 1.28.0 warning, and that 1.32.0 / the scaffold default / other backends / `local:` pins / unknown names pass through. Force-failed (floor lowered) to prove discovery, restored. Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6

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Inline comments:
In `@src/init_cmd.zig`:
- Around line 123-126: Update cmdInit to validate opts.backend with
std.meta.stringToEnum(config.Backend, opts.backend) before calling
backendCoreFloorViolation or scaffolding; log an unknown-backend error and exit
with status 2 when conversion returns null, while preserving the existing flow
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apotema · 2026-09-18T05:12:18Z

Acknowledged — real, and a quick win. Merging #736 as-is (the finding is Minor; the merge gate is Major-and-above) and folding the fix into #733's final pass, which is editing init_cmd.zig's floor table in the same window and ships in the same assembler release: reject an unknown --backend with a diagnostic listing the valid names before backendCoreFloorViolation runs, plus a test asserting --backend=bgxf exits non-zero and writes nothing.

https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6

…ct v2), materials pin gate, --backend validation The P1 on #733: a project with `materials/` on the ordinary `.backend = .bgfx` defaults generated fine and always died at the generated module's `@compileError` because the defaults still resolved bgfx 0.20.0 / core 1.32.0 while the module requires material contract v2. The fix is the defaults, moved TOGETHER (the #731 lesson): - src/config.zig builtinProvider `.bgfx` 0.20.0 -> 0.21.0 (first contract-v2 backend; names `shader_material` ungated, hard floor core >= 2.0.0). `.sokol` stays 0.6.0. - build.zig scaffold trio 1.32.0 / 2.12.2 / 1.30.1 -> core 2.0.0 / engine 3.0.0 / gfx 2.0.0; floor comments rewritten to the new truth. - init_cmd `bgfx_core_floors`: bgfx >= 0.21.0 -> core >= 2.0.0 (compile_break) on top of #736's table; `checkTrioFloors` gains the 2.0.0-line floors (gfx 2 <-> core 2 + engine 3, engine 3 <-> core 2 + gfx 2); #736's tests extended to the new pairings. - material_pipeline: `contractViolation`/`requireContract` reject, at generate time, an EXPLICIT pre-contract-v2 `.backend_package` / `.core_version` pin on a project that owns materials/, naming the pin and the floor (the "reject incompatible release pins" half of the P1; #739 tracks the general floor check). `parsePin`/`pinAtLeast` move to config.zig so init and generate share one comparison. - init: reject an unknown `--backend=` BEFORE the floor check and before writing anything, listing the valid backends from the enum (#736 CodeRabbit follow-up). Front door verified: `--backend=bgxf` -> exit 2, no directory, diagnostic lists raylib, sokol, sdl, bgfx, wgpu, null. - docs/shader-migration.md: release-sequence step 5 is done. Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6

…ist (#733) * examples: add the COND-07 condenser pixel-water example A runnable Labelle game for labelle-bgfx#100's acceptance criterion — "a runnable Labelle example using this condenser's artwork" — exercising the engine's built-in `PixelWater` component and bgfx's `fs_pixel_water` program through the ordinary `labelle` CLI path. Modelled on examples/material-demo (bgfx + engine + zig_ecs). Two COND-07 condenser units side by side, each with a reactive reservoir, drifting mist and condensation drops that contact the CURRENT water surface and emit one ripple each via `game.addWaterRipple`. What it proves, beyond "it ran": * `PixelWater` is authored in a PREFAB's JSON config (prefabs/reservoir.jsonc), not inline in the scene, so the JSONC apply path's built-in branch (`game.addPixelWater`) runs on a prefab. * The scene instantiates that prefab TWICE and overrides only `water_level` (and the `Reservoir.unit` marker) at the instance site — the RFC-OVERRIDES-MERGE-RULES deep merge, on a built-in component. Both instances came up live at their overridden levels (0.8333 / 0.5), so the merge does not drop the component and the field does override. * Two INDEPENDENT gfx water instances from one prefab. * Draw order / foreground occlusion by layer order: machine interior -> water -> mist -> drops -> cooler -> frame. Emitter A (reservoir-local x 21) sits behind the cooler and is occluded on the way down. * Nothing fakes the water: the only contact with the effect is one `addWaterRipple` per drop. Measurements (native canvas 103x55, reservoir x 4 y 48 w 93 h 6, emitters at local x 21/28/43/51/65) come from labelle-bgfx PR #106, whose layer PNGs are vendored into assets/layers/ because that branch is unmerged. `grid_pixels` is 1 — a native art pixel IS an effect cell; #100's "6x6" is the x6 screen enlargement. Unit A is filled to 5/6 (the basin is only 6 native rows tall, so the level has 6 steps) to keep one dry row of headroom, since at level 1.0 the shader clamps the displaced surface and ripples become invisible. Verified on desktop bgfx/Metal: `bgfx: pixel-water program initialized`, no degrade line from programs.zig or retained_engine/draw.zig, and a reservoir-band frame diff (drop and occluder columns excluded) that moves by 66%/39% of cells with water on and is BIT-IDENTICAL with the effect switched off via the example's `CONDENSER_WATER_OFF=1` control. Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6 * Keep condenser mist stationary to focus on water animation * Keep reservoir still except for drop impact ripples * Preserve reference-resolution condenser art at native display scale * Add game-owned shader material build pipeline and collision checks * feat(condenser): own water fog and lamp shaders and controls * Document coordinated shader migration and validation limits * Add game-owned drifting mist above live reservoir water * review: make the condenser verification runnable off Windows; restore the constraints the migration dropped tools/verify_runtime.py hard-coded `condenser.exe`, so the example's only real runtime acceptance could not be executed on macOS or Linux. With the platform-correct binary name it passes unchanged on macOS/Metal: 16 native runs, eight live generic materials each, right half byte-identical for every left-only control. Documentation the migration dropped, and which the generic path still carries: - A `.catalog` shader-texture binding must be a STANDALONE `.image` resource. The engine rejects any catalog entry whose `loader_kind` is not `.image` with `error.InvalidTexture` (labelle-engine/src/game/shader_material_mixin.zig), so an atlas frame can never be a mask. This was true of the retired built-in water effect and is unchanged; it was documented in project.labelle and was deleted with the rest of that header. Restored there and stated in docs/shader-materials.md, where the generic contract lives. - The screen-space layer rationale (a world layer centres the world origin and puts the measured native-px coordinates half a screen off). - The `local:` selections are marked as what they are: not mergeable. docs/shader-migration.md's release sequence was missing the step that would otherwise reproduce the assembler#731 break in reverse: a default `.backend = .bgfx` resolves through `ProjectConfig.builtinProvider`, still pinned at 0.6.6 here, so the released contract-v2 backend must be adopted in the SAME change as the new core. Also records assembler#732 — the examples lane only GENERATES bgfx examples, so a green run is not evidence this example builds. Plus: `DuplicateMaterialName` returned with no diagnostic; it now names both colliding folders and why the comparison folds case. zig build test --summary all: 2904/2916 passed (12 skipped), exit 0. Generated example suite: 20/20, exit 0. examples/plugin-controllers regenerated + built + run to exercise the emitted `rejectComponentCollisions` guard on a plugin-bearing project. Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6 * condenser: pin the released shader-material stack instead of local siblings Replace the four `local:../../../labelle-*` development selections in examples/condenser/project.labelle with the released pins: core 2.0.0, gfx 2.0.0, engine 3.0.0 and the bgfx backend 0.21.0 (the first contract-v2 backend; it requires core >= 2.0.0, so the four move together). The assembler stays `local:../../` like every example. labelle.lock was regenerated through the CLI (v1.67.0, no override needed). README and docs/shader-migration.md now describe the released pins; step 5 of the release sequence (src/config.zig builtin provider default + scaffold trio) deliberately stays untouched and follows assembler#736. Verified as a standalone consumer: the assembler checkout mirrored outside the monorepo (no sibling labelle-* checkouts, so findRepoRoot finds nothing), scratch LABELLE_HOME, `labelle build` exit 0 with no `generate failed` and no "built from LOCAL sources" warning, staged build.zig.zon versions 2.0.0/2.0.0/3.0.0/0.21.0 byte-identical to the tagged manifests, `labelle run --timeout=8` exit 0 with all four shader components reporting 2/2 generic materials live and no degrade/fallback line. Assembler `zig build test`: 2904/2916 passed, 12 skipped (branch baseline). Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6 * review(#733): enum-keyed material backend gate, mobile target alias, mist in test_all, doc status - material_pipeline: gate game-owned materials on the `.bgfx` ENUM TAG (`requireBackend`), not the resolved package name — `.backend = .bgfx` with a provider named e.g. `bgfx_v2` was rejected with UnsupportedMaterialBackend (Codex P2). Test covers a non-literal provider name (accepted) and `.sokol` (rejected). - build_zig: `needsTargetAlias` includes `opts.materials.len != 0`, so a materials-only iOS/Android game defines `target` before material_build.zig consumes it (CodeRabbit). Test asserts the alias precedes the consumer and is absent without materials. - condenser: `test_all` (CONDENSER_TEST_LEFT=1) now toggles the left mist too; README lists the four-way control (CodeRabbit). - docs/shader-migration.md: released pins, mist, 20 tests, Metal + Android verified live (CodeRabbit). Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6 * defaults: bgfx 0.21.0 + core 2.0.0 / gfx 2.0.0 / engine 3.0.0 (contract v2), materials pin gate, --backend validation The P1 on #733: a project with `materials/` on the ordinary `.backend = .bgfx` defaults generated fine and always died at the generated module's `@compileError` because the defaults still resolved bgfx 0.20.0 / core 1.32.0 while the module requires material contract v2. The fix is the defaults, moved TOGETHER (the #731 lesson): - src/config.zig builtinProvider `.bgfx` 0.20.0 -> 0.21.0 (first contract-v2 backend; names `shader_material` ungated, hard floor core >= 2.0.0). `.sokol` stays 0.6.0. - build.zig scaffold trio 1.32.0 / 2.12.2 / 1.30.1 -> core 2.0.0 / engine 3.0.0 / gfx 2.0.0; floor comments rewritten to the new truth. - init_cmd `bgfx_core_floors`: bgfx >= 0.21.0 -> core >= 2.0.0 (compile_break) on top of #736's table; `checkTrioFloors` gains the 2.0.0-line floors (gfx 2 <-> core 2 + engine 3, engine 3 <-> core 2 + gfx 2); #736's tests extended to the new pairings. - material_pipeline: `contractViolation`/`requireContract` reject, at generate time, an EXPLICIT pre-contract-v2 `.backend_package` / `.core_version` pin on a project that owns materials/, naming the pin and the floor (the "reject incompatible release pins" half of the P1; #739 tracks the general floor check). `parsePin`/`pinAtLeast` move to config.zig so init and generate share one comparison. - init: reject an unknown `--backend=` BEFORE the floor check and before writing anything, listing the valid backends from the enum (#736 CodeRabbit follow-up). Front door verified: `--backend=bgxf` -> exit 2, no directory, diagnostic lists raylib, sokol, sdl, bgfx, wgpu, null. - docs/shader-migration.md: release-sequence step 5 is done. Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6 * review(#733, round 3): scope the bgfx materials floor to the official train; trio floors as an init validator; document M - material_pipeline: the 0.21.0 release floor now applies only when the resolved provider IS the official labelle-bgfx (repo == the builtin provider's repo). A custom provider (`.backend_package` on another repo, its own semver) passes the pin gate and is validated by the generated `MATERIAL_CONTRACT_VERSION == 2` guard instead. Test: acme bgfx_v2 0.1.0 accepted; official bgfx 0.20.0 still rejected whatever the package is called; the core floor still applies (Codex P2). - init_cmd: the trio floors move out of the test helper into a production table (`trio_floors`) + validator (`trioFloorViolation`) that `cmdInit` runs before scaffolding, same policy as the backend floors (compile break refuses, curated warns); `checkTrioFloors` is now a thin wrapper over it. Front door: `init --engine-version=2.12.2` -> exit 2, nothing written, "labelle-gfx 2.0.0 requires labelle-engine >= 3.0.0; got core 2.0.0 / engine 2.12.2 / gfx 2.0.0 (...). Pass --engine-version=3.0.0"; defaults -> exit 0. Scope is init only; generate/upgrade is #739 (Codex P2). - condenser README: M toggles mist (CodeRabbit). Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6 --------- Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

…bgfx remote; floor the 2.x core line (#739, #742) (#746) * fix: apply the version floors in generate/check/upgrade, normalize the bgfx remote, floor the 2.x core line (#739, #742) Two holes left by #736's `init`-only validators, closed against the same tables — no second copy of the floors. #742.1 — `isOfficialBgfx` compared the RAW repo string, so the `https://…/labelle-bgfx.git` spelling of the official repo (which the fetch path clones happily) was classified as a CUSTOM provider, skipped `contractViolation`, and failed at the generated `MATERIAL_CONTRACT_VERSION` guard instead of at generate with the pin named. `config.normalizeRemote`/`sameRemote` strip the scheme and a `.git` suffix and case-fold the host; `local:` paths compare verbatim. #742.2 — the trio rules all keyed off a NEW gfx or engine, so `init --engine-version=2.12.2 --gfx-version=1.30.1` under the default core 2.0.0 scaffolded a set the table's own docs call incompatible. Two reverse rules (core >= 2.0.0 floors engine >= 3.0.0 and gfx >= 2.0.0), ordered after the gfx/engine-subject rules so an old core under a new gfx keeps naming gfx as the subject. #739 — the floors moved from `init_cmd.zig` to `version_floors.zig` (which also drops init_cmd under the 1000-line line) and now run at every door that writes or resolves the pairing: * `generate`/`check` — `configBackendCoreFloorViolation` resolves the EFFECTIVE backend package, so an explicit `.backend_package` (which `init` has no flag for, so it was unreachable before) is judged too, in every spelling of the official remote. A non-official provider carries its own semver and is left to the generated contract guard. * `upgrade` — validated on the PROSPECTIVE pins, before the rewrite lands, so a refusal leaves project.labelle untouched. It refuses only when the upgrade moves a floor-bearing pin: `upgrade cli` on an already-below-floor project warns and proceeds rather than blocking an unrelated bump, and `upgrade all` still REPAIRS such a project. `enforce` splits into a pure `verdict` (so tests assert which table refused, without emitting error logs) and the logging wrapper the commands call. The #736 severity split is unchanged: compile break refuses, curated floor warns. Verified STANDALONE (whole checkout mirrored outside the toolkit, scratch LABELLE_HOME, registry packages), each with a negative control on the pre-fix binary: * bgfx 0.20.0 via `https://…/labelle-bgfx.git` + materials/: before generate exit 0; after, refused naming the 0.20.0 pin. * `init --engine-version=2.12.2 --gfx-version=1.30.1`: before exit 0 and a scaffolded project; after exit 2, nothing written, all three pins + the floor named. * hand-edited core 1.32.0 / engine 2.12.2 / gfx 1.30.1 under builtin bgfx 0.21.0: before generate exit 0 and `zig build` died with "root source file struct 'root' has no member named 'shader_material'" inside labelle-bgfx; after, refused at generate. * `upgrade core 1.32.0`: before rewrote the pin; after exit 2, unchanged. * Regression: default `init --backend=bgfx` and the condenser / material-demo / pack-city examples generate AND fully `zig build` (exit 0); tile-explorer, sprite-runner, camera-builtin generate. Tests: 2926/2938 passed (12 skipped), exit 0 — +9 over the 2917/2929 baseline; all six new tests force-failed and confirmed collected. Closes #739 Closes #742 Co-authored-by: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6 * fix: identify the provider from the package, unify remote normalization, restore the manifest-first ordering, evaluate decidable trio rules (#746 review) Four review findings, all verified standalone against a pre-fix binary (mirrored checkout outside the toolkit tree with a scratch LABELLE_HOME, so sibling checkouts cannot mask the pins). 1. [P1] Explicit providers were identified via the IGNORED `.backend` enum. When a project selects the official bgfx repo solely through `.backend_package`, `ProjectConfig` documents that `.backend` is ignored and it sits at its meaningless `.raylib` default — yet `isOfficialProvider(cfg.backend, bp)` compared the bgfx package against the RAYLIB remote, answered "third party", and dropped the floor. `officialBackendOf(bp)` now derives the backend from the resolved package alone. Control: bgfx 0.21.0 + core 1.32.0 via `.backend_package` — `check` pre-fix exit 0 ("nothing to lint"), post-fix exit 2 naming `bgfx 0.21.0 requires labelle-core >= 2.0.0`. 2. [P2] `normalizeRemote` did not strip `?query`/`#fragment` (or a `git+` prefix outside the one `git+https://` spelling), while the fetch path's `repoHostPath` did — so `git+https://github.com/labelle-toolkit/labelle-bgfx?ref=main` FETCHED the official backend and was then judged custom. The divergence was the bug, so `repoHostPath` now delegates to `config.normalizeRemote`: one normalizer, and the identity a gate compares is by construction the identity the fetcher resolves. Control: that exact repo string, `.backend = .bgfx` so finding 1 cannot confound — pre-fix exit 0, post-fix exit 2. 3. [P2] The floor check ran BEFORE `requireManifestIfExternal`, so an external provider that both lacked its manifest and carried bad pins was told to change framework versions while the real blocker — a provider unusable at any version — went unmentioned. Moved after it, still ahead of any target-file emission. Control: manifest-less `local:` provider + a trio compile break — pre-fix reports VersionFloorViolation, post-fix reports ExternalBackendNeedsManifest; adding the manifest brings the floor error back, so the reorder did not drop the check. 4. [P2] One non-semver pin suppressed EVERY trio rule. Each rule reads exactly two pins, so decidability is per rule: a rule is skipped only when its own subject or requirement is unparseable. Control: `core_version = "local:../labelle-core"`, engine 3.0.0, gfx 1.30.1 — pre-fix exit 0, post-fix exit 2 naming `labelle-engine 3.0.0 requires labelle-gfx >= 2.0.0`. Two in-tree assertions that encoded the old blanket behaviour were updated and now assert WHICH rule fires, not merely that the result is null. `zig build test --summary all`: 2928 pass / 2940 total, exit 0 (was 2926/2938 — +2, the new tests). Force-failing each takes the suite to 2 fail, exit 1. Co-authored-by: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01XBGRLojiysEr5zy1U5mbP6 --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

coderabbitai Bot reviewed Sep 18, 2026

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Comment thread src/init_cmd.zig Resolved

coderabbitai Bot reviewed Sep 18, 2026

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Comment thread src/init_cmd.zig Resolved

apotema merged commit 0202c67 into main Sep 18, 2026
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fix: run the version floors in generate/check/upgrade; normalize the bgfx remote; floor the 2.x core line (#739, #742) #746

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fix: pair bgfx 0.20.0 with core 1.32.0 in the examples and the init scaffold (#731 follow-up) - #736

fix: pair bgfx 0.20.0 with core 1.32.0 in the examples and the init scaffold (#731 follow-up)#736
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fix/731-core-floors

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