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paperspec/CONTRIBUTING.md
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Reorganize paperspec commands and pin dependency versions (#2)
Reviewed-on: #2
2026-10-15 09:53:05 -04:00

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# Contributing
This page is for anyone who wants to fix the specification, change a format or add an example.
Propose a change as a pull request on the repository at <https://git.scient.ing/infra/paperspec>.
## What a change needs
A change starts in the chapter of [the specification](spec/README.md) that defines the rule, because the chapters are normative.
The schemas, SQL, registries, vectors and fixtures then follow the chapter ([spec/00 §0.5](spec/00-introduction.md#05-how-the-repository-is-arranged)).
1. **Change the chapter.**
Say what is new in the chapter's own terms, and link the sections it touches.
2. **Change the schemas, SQL and registries** that the rule shapes.
A new refusal gets a rule ID in [registry/rules.json](registry/rules.json).
3. **Compute, never type, the expected values.**
Change the oracle in [src/paperspec/](src/paperspec/) to apply the rule, and add the case that shows it to [src/paperspec/cli/build.py](src/paperspec/cli/build.py): a vector, a fixture or a broken package in `fixtures/invalid/`.
Then run `pixi run build`, which rewrites `fixtures/` and `vectors/`.
4. **Run the checks.**
`pixi run check` must end with `All checks pass.`
Without pixi, install the checkout with `pip install -e ".[tools]"` on Python 3.14, then run `paperspec check`.
5. **Record the change** in [CHANGELOG.md](CHANGELOG.md).
## Versions
A change that makes a valid file invalid, or that changes a computed value, is a breaking change and needs a new major version of the format, with a migration.
Adding an optional property, a node kind, a run kind or an enumeration value is a minor change ([spec/00 §0.3](spec/00-introduction.md#03-format-identifiers-and-versions)).
A rebuild that changes any file under `vectors/` or any hash in `fixtures/` is a computed value changing, so say in the pull request why it must.
## New node kinds and run kinds
Propose a kind with the vector or fixture that shows it.
A node kind needs its row in [chapter 3](spec/03-nodes.md), the node schema, and its entry in the `CHILDREN` table of `src/paperspec/model.py`.
A run kind needs its row in [section 3.5](spec/03-nodes.md#35-inline-runs) and the node schema, and its text in the plain projection ([3.6](spec/03-nodes.md#36-the-plain-projection)) and in the strict and lossy projections ([5.3](spec/05-hashes.md#53-the-strict-projection), [5.5](spec/05-hashes.md#55-the-lossy-projection)).
## Releasing
A release is a tag `vX.Y.Z` on `main`, and its version is the version of the Python package `paperspec`, which setuptools-scm reads from the tag.
A release that changes the formats takes the new format version, which becomes the top heading of [CHANGELOG.md](CHANGELOG.md) and the version that `pixi.toml` and the registries state.
A release that changes only the code takes the next patch version and records it as a subsection under the current format version, as `### 0.1.1` sits under `## 0.1.0`.
Pushing the tag publishes the package to the Gitea package registry ([deploy/](deploy/README.md#publish-the-python-package)).
Before tagging:
1. `pixi run check` passes on Linux and macOS, which the workflow in `.gitea/workflows/` runs on every push.
The check also confirms that every count the prose states (formats, schemas, vectors, broken packages) matches the repository, and that `pixi.toml`, the registries and `src/paperspec/cli/build.py` state the same version.
2. `paperspec stress` passes with its default seed, and with one or two others.
3. The website is published from the release ([deploy/](deploy/README.md)), and the JSON-LD context at `https://paperspec.scient.ing/context/scienting-1.jsonld` and a schema at its `$id` both answer with their media types.
Layers claim to be W3C Web Annotations, and a JSON-LD processor that cannot fetch the context cannot read them.
4. The decisions that freeze on release are made: enumeration values and format identifiers never change meaning afterwards ([spec/22 §22.5](spec/22-conformance.md#225-stability)), so a name worth changing is changed now.
5. The CHANGELOG entry describes the release in the terms of the chapters it touches.
## Writing
The checker enforces two rules on every Markdown file: one sentence per line, and US spelling.
`pixi run lint` runs markdownlint with the repository's settings.
Define each term where it first appears, because the guides and READMEs are written for newcomers as well as implementers.
All fixture text is synthetic, written for the fixtures.
The keys in `fixtures/keys/` are public test keys and must never sign anything else.
## Licenses
Each path keeps the license that [LICENSE.md](LICENSE.md) gives it: prose CC-BY-4.0, the normative data CC0-1.0, and the code in `src/` and `tools/` Apache-2.0.