Strategies

A strategy (the release-type config key) tells Versionary how to read and write a project's version, what to validate, and which changelog format to prefer. The version bump itself comes from Conventional Commits and is the same across all strategies—the strategy only governs where the version lives and which files get updated.

release-type	Version source	Default changelog	Notes
simple	version.txt	CHANGELOG.md	Plain text. The default.
node	package.json	CHANGELOG.md	Syncs npm lockfiles.
rust	Cargo.toml	CHANGELOG.md	Workspace inheritance, internal deps, Cargo.lock.
python	pyproject.toml	CHANGELOG.md	Or a .py __version__ file; refreshes lockfiles.
r	DESCRIPTION	NEWS.md	Uses the r-news changelog format.
julia	Project.toml	CHANGELOG.md	Root-level version.
latex	build.lua	CHANGELOG.md	Also updates .dtx package metadata.

For polyglot projects, release-type can be an array to compose strategies.

The version file can be overridden per project (or per package) with the version-file config key, with the strategy-specific exceptions noted below.

simple

The default when release-type is omitted.

• Version source: version.txt (override with version-file).
• Reads/writes: the trimmed contents of the file; writes version\n.
• No dependency management, no lockfiles. Ideal for docs sites, non-standard projects, or anything without a language manifest.

node

• Version source: package.json version field.
• Package name: package.json name (used for monorepo tag naming).
• Lockfiles: when present, package-lock.json and npm-shrinkwrap.json are updated to the new version in the same write.
• Changelog: markdown-changelog.

rust

• Version source: Cargo.toml [package].version. version-file must point at a Cargo.toml.
• Package name: Cargo.toml [package].name.
• Workspaces: virtual/workspace manifests expand to their members. Crates using version.workspace = true resolve and update [workspace.package].version in the owning workspace manifest.
• Internal dependencies: when a dependency name matches another targeted crate, its version requirement is rewritten across [dependencies], [dev-dependencies], [build-dependencies], and their [target.*] variants. Operators (^, ~, >=, …) and table vs. string forms are preserved.
• Lockfiles: Cargo.lock files are refreshed via cargo generate-lockfile. cargo must be on PATH during PR preparation when a Cargo.lock exists.
• Changelog: markdown-changelog.

Not done (by design): external dependency updates, workspace.dependencies updates, adding missing version fields to dependency tables, or publishing to crates.io.

python

• Version source: pyproject.toml by default. Versionary updates [project].version and/or [tool.poetry].version—whichever are present.
• Source-file mode: point version-file at a Python file (e.g. src/<pkg>/__init__.py) to update a __version__ = "X.Y.Z" assignment instead of the TOML.
• __init__.py discovery: when using pyproject.toml, a matching __init__.py with __version__ in standard locations is also updated.
• Package name: [project].name, falling back to [tool.poetry].name.
• Lockfiles: poetry.lock, uv.lock, and pdm.lock at the package root are refreshed by shelling out to the matching tool (poetry lock --no-update, uv lock, pdm lock --update-reuse). The corresponding binary must be on PATH.
• Changelog: markdown-changelog.

r

• Version source: DESCRIPTION Version: field.
• Package name: DESCRIPTION Package: field.
• Changelog: defaults to NEWS.md with the r-news format, which follows R package conventions (single-# version headings, abbreviated major.minor headings, and extraction of an "unreleased"/development notes block at the top of NEWS.md).
• Updates are performed by targeted replacement of the Version: line.

julia

• Version source: Project.toml, the root-level version field (Julia keeps name/version as root keys, not under a [table]).
• The update is line-based to preserve formatting, comments, quote style, and line endings; it stops searching at the first table header.
• Changelog: markdown-changelog.

latex

• Version source: build.lua (the version = "X.Y.Z" assignment).
• .dtx metadata: during finalization, every .dtx file under src/ is updated. Versionary rewrites the package metadata using the release commit date:
  • \ProvidesPackage{name}[YYYY-MM-DD vX.Y.Z description]
  • \ProvidesExplPackage{name}{YYYY-MM-DD}{X.Y.Z}{description} Each .dtx must contain exactly one such entry, and src/ must contain at least one .dtx file.
• Changelog: markdown-changelog.

Composite strategies

Set release-type to an array to update multiple manifests with the same version—useful for projects that carry more than one language manifest:

{
  "version": 1,
  "release-type": ["python", "rust"]
}

Semantics:

• The first entry is the primary. It drives readVersion, readPackageName, and consumes any version-file override.
• Each subsequent entry is a secondary and writes its own default manifest to the same target version (secondaries do not see the primary's version-file override).
• Validation, dependency-impact propagation, and finalization run across all strategies; the changelog format comes from the primary.

Common combinations:

• ["python", "rust"] — PyO3/maturin (pyproject.toml + Cargo.toml + Cargo.lock)
• ["node", "rust"] — napi-rs (package.json + Cargo.toml + Cargo.lock)
• ["r", "rust"] — R packages with embedded Rust crates

WARNING

The array form does not yet support nested manifests at non-default paths (e.g. an R package's src/rust/Cargo.toml). Until per-strategy version-file overrides land, use a single strategy for those layouts.

Auto-detection

Strategies are selected explicitly via release-type; there is no silent auto-detection by language. However, versionary verify validates that the configured strategy's version file exists and parses, so a misconfigured release-type is caught early.