Files
merge-script 09a9bb3536 Merge bitcoin/bitcoin#34547: lint: modernise lint tooling
2424e52836 lint: doc: detail lint tool install methods (will)
5fefa5a654 Don't pin Python patch version (Sjors Provoost)
fd15b55c2e lint: use requirements.txt (will)
5f4d3383da lint: switch to ruff for formatting and linting (will)
a53b81ce4e lint: switch to uv for python management in linter (will)

Pull request description:

  Modernise our lint tooling by:

  \- Replacing pyenv + pip with [uv](https://docs.astral.sh/uv/) for better Python environment and dependency management
  \- Move uv ruff and ty to install via `COPY --from` multi-stage Docker image imports
  \- Moving ruff lint rules from hardcoded Rust array (in lint_py.rs) into a top-level ruff.toml
  \- Extracting all remaining pip dependencies into dedicated ci/lint/requirements.txt

  Extra rationale:

  `COPY --from` pulls pre-built binaries from upstream images instead of compiling/downloading at runtime. Containerfile layer optimisations reduce rebuild frequency further.

  Pinning tool versions in the dockerfile makes it more excplicit and easier to find.

  The tradeoff we make here is that there is no longer a single install script to install tooling on a local machine. However I think this is OK, as it currently only works for `apt`-based OSes anyway, and I don't think running the linter outside of the container is such a valuable use-case as it is with some of the other CI jobs.

ACKs for top commit:
  maflcko:
    review ACK 2424e52836 🗿
  sedited:
    ACK 2424e52836

Tree-SHA512: 32ef989c1e241cebe5f13da10abd23f6f63306591fd1f81880d688b886082bca17987591dc592c41fbb72278eba57b3cc6e786de7cfa80eb490ab34465d0119b
2026-05-13 10:27:38 +02:00
..

This folder contains lint scripts.

Running locally

To run linters locally with the same versions as the CI environment use the lint.py helper script which runs checks inside the CI container:

./ci/lint.py

Extra arguments are passed to cargo run -- ... in the container so you can do:

./ci/lint.py --help
./ci/lint.py --lint=py_lint

test runner

To run all the lint checks in the test runner outside the container you first need to install the rust toolchain using your package manager of choice or rustup.

Then you can use:

( cd ./test/lint/test_runner/ && cargo fmt && cargo clippy && RUST_BACKTRACE=1 cargo run )

If you wish to run individual lint checks, run the test_runner with --lint=TEST_TO_RUN arguments. If running with cargo run, arguments after -- are passed to the binary you are running e.g.:

( cd ./test/lint/test_runner/ && RUST_BACKTRACE=1 cargo run -- --lint=doc --lint=trailing_whitespace )

To see a list of all individual lint checks available in test_runner, use -h or --help:

( cd ./test/lint/test_runner/ && RUST_BACKTRACE=1 cargo run -- --help )

Dependencies

Lint test Dependency
lint-python.py lief
lint-python.py mypy
lint-python.py pyzmq
lint-shell.py ShellCheck
py_lint ruff
markdown link check mlc

Dependency versions and installation instructions are available in the CI setup and the lint_imagefile (for tools where an OCI imagefile exists).

Please be aware that on Linux distributions all dependencies are usually available as packages, but could be outdated.

Running the tests

Individual tests can be run by directly calling the test script, e.g.:

test/lint/lint-files.py

check-doc.py

Check for missing documentation of command line options.

commit-script-check.sh

Verification of scripted diffs. Scripted diffs are only assumed to run on the latest LTS release of Ubuntu. Running them on other operating systems might require installing GNU tools, such as GNU sed.

git-subtree-check.sh

Run this script from the root of the repository to verify that a subtree matches the contents of the commit it claims to have been updated to.

Usage: test/lint/git-subtree-check.sh [-r] DIR [COMMIT]
       test/lint/git-subtree-check.sh -?
  • DIR is the prefix within the repository to check.
  • COMMIT is the commit to check, if it is not provided, HEAD will be used.
  • -r checks that subtree commit is present in repository.

To do a full check with -r, make sure that you have fetched the upstream repository branch in which the subtree is maintained:

Keep this list in sync with fn get_subtrees() in the lint runner.

To do so, add the upstream repository as remote:

git remote add --fetch secp256k1 https://github.com/bitcoin-core/secp256k1.git

lint_ignore_dirs.py

Add list of common directories to ignore when running tests