Verdog runtime

The Python workflow runtime for Verdog. It provides workflow declarations, the interpreter, agent adapters, durable run resumption, and typed workflow argument parsing. Requires Python 3.12 or newer.

Generated projects declare verdog-runtime as a dependency. Install it directly for programmatic use:

uv pip install 'verdog-runtime>=0.1.2'

The separate verdog-cli package provides the verdog command and talks to the hosted backend for generation and verification:

uv tool install --upgrade 'verdog-cli>=0.1.0'
verdog --help

The CLI depends on this runtime; the runtime does not depend on the CLI. Workflow environments contain the runtime and workflow dependencies. Run history and lifecycle transport are exposed through verdog_runtime.runs; advisory file locks through verdog_runtime.locking; typed workflow argument parsing remains available from verdog_runtime.cli.

The package split preserves run-history formats. Exact resume and fork still check runtime and environment fingerprints, so checkpoints created before the split require their original compatible runtime environment.

Development

uv sync --locked --no-editable
uv run --no-sync ruff check .
uv run --no-sync ruff format --check .
uv run --no-sync pyright
uv run --no-sync pytest
uv build

The tests and type-checking configuration are self-contained in this repository. Use a regular installation (--no-editable) because verdog sync copies the installed distribution into workflow environments.

Code quality

Follow the Google Python style guide. Ruff enforces 80-column formatting, absolute imports, import sorting, Google-style docstrings, and common correctness and simplification checks. Import modules rather than their members, except for typing names and deliberate public re-exports. Keep error messages, checkpoint formats, and public APIs stable when refactoring. Documentation should explain contracts and non-obvious constraints.

Run uv run --no-sync ruff format . to format changes. Both pull requests and releases check formatting, lint, types, and tests. The existing strict Pyright configuration remains the authority for types; no type errors are suppressed to satisfy a formatter.

For a deeper review, use the pinned analysis tools:

uv run --no-sync pylint verdog_runtime --reports=no
uv run --no-sync radon cc verdog_runtime -s -n C
uv run --no-sync radon mi verdog_runtime -s

Pylint and Radon are review aids, not score targets. Prioritize functions that combine validation, mutation, and recovery; split them at those boundaries rather than adding helpers just to meet a numeric threshold. Keep rollback and trust-boundary checks intact. Cyclomatic complexity counts independent control-flow paths; inspect both the largest function and any helpers extracted from it.

Compatibility exceptions are narrow: public package facades retain re-exports; TypeVar and type-alias syntax remains where runtime introspection and checkpoint compatibility depend on it; dynamic dataclass access uses getattr explicitly. Tests use descriptive names and assertions instead of mandatory API docstrings.

The September 2026 pass was measured against commit e457564, using the same Ruff settings for both versions:

The largest changes separate dependency-removal validation from graph/file edits, projection staging from rollback, and checkpoint validation from resource setup. The extra functions represent those responsibilities; they do not change the checkpoint or wire formats. Physical line counts rise with 80-column wrapping, qualified names, and documentation, so line count alone is not the improvement criterion.

See the workflow declarations, interpreter, and user documentation.

Release

release.yml runs when a v* tag is pushed, like v0.1.2. It checks that the tag matches project.version, runs style, tests, and type checks on Python 3.12, builds the wheel and source distribution, checks the installed wheel, and publishes both distributions to PyPI.

Configure this once before the first release:

1. Create the GitHub environment pypi in this repository's settings.
2. Add a PyPI Trusted Publisher: project verdog-runtime, owner verdog-ai, repository verdog-runtime, workflow filename release.yml, environment pypi. For a new PyPI project, add it as a pending publisher under your account's Publishing settings. For an existing project, use its Publishing settings. No API-token secret is needed.

Commit and push the repository contents, including this workflow. For each release, update project.version in pyproject.toml, run uv lock, and commit those changes. Then push the matching tag:

git push origin main
git tag v0.1.2
git push origin v0.1.2

Use a new version and matching tag for each subsequent release.

License

Verdog runtime is licensed under the GNU Affero General Public License, version 3 only (AGPL-3.0-only). See LICENSE.