---

name: Linting

on: [pull_request]

permissions: {}

jobs:

pre-commit:

name: precommit

runs-on: ubuntu-latest

permissions:

contents: read

steps:

- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

with:

fetch-depth: 0

persist-credentials: false

- uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0

with:

python-version: "3.x"

- uses: j178/prek-action@bdca6f102f98e2b4c7029491a53dfd366469e33d # v2.0.4

with:

extra-args: --hook-stage manual --all-files

ruff:

name: ruff

runs-on: ubuntu-latest

permissions:

contents: read

checks: write

steps:

- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

with:

persist-credentials: false

- name: Set up Python 3

uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0

with:

python-version: '3.12'

- name: Install ruff

run: pip3 install ruff

- name: Set up reviewdog

uses: reviewdog/action-setup@d8a7baabd7f3e8544ee4dbde3ee41d0011c3a93f # v1.5.0

- name: Run ruff

env:

REVIEWDOG_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }}

run: |

set -o pipefail

ruff check --output-format rdjson | \

reviewdog -f=rdjson \

-tee -reporter=github-check -filter-mode nofilter

mypy:

name: mypy

runs-on: ubuntu-latest

permissions:

contents: read

checks: write

steps:

- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

with:

persist-credentials: false

- name: Set up Python 3

uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0

with:

python-version: '3.12'

- name: Install mypy

run: pip3 install --group build --group typing

- name: Set up reviewdog

uses: reviewdog/action-setup@d8a7baabd7f3e8544ee4dbde3ee41d0011c3a93f # v1.5.0

- name: Run mypy

env:

REVIEWDOG_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }}

run: |

set -o pipefail

mypy --config pyproject.toml | \

reviewdog -f=mypy -name=mypy \

-tee -reporter=github-check -filter-mode nofilter

clang-tidy:

name: clang-tidy (macOS / Objective-C)

runs-on: macos-latest # run on macOS so we can lint the objectiveC file

permissions:

contents: read

steps:

- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

with:

persist-credentials: false

- name: Set up Python 3

uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6.2.0

with:

python-version: '3.14'

- name: Install OS dependencies

run: brew install llvm

- name: Install build dependencies

run: pip3 install meson ninja pybind11 setuptools-scm

- name: Run clang-tidy

run: |

set -o pipefail

LLVM_PREFIX=$(brew --prefix llvm)

export CC=$LLVM_PREFIX/bin/clang

export CXX=$LLVM_PREFIX/bin/clang++

export OBJC=$LLVM_PREFIX/bin/clang

export PATH=$LLVM_PREFIX/bin:$PATH

python tools/run_clang_tidy.py

eslint:

name: eslint

runs-on: ubuntu-latest

permissions:

contents: read

checks: write

steps:

- uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2

with:

persist-credentials: false

- name: eslint

uses: reviewdog/action-eslint@556a3fdaf8b4201d4d74d406013386aa4f7dab96 # v1.34.0

with:

filter_mode: nofilter

github_token: ${{ secrets.GITHUB_TOKEN }}

reporter: github-check

workdir: 'lib/matplotlib/backends/web_backend/'