style: Move formatting to Ruff

.github/workflows/ci.yml

@@ -30,7 +30,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
         include:
           - os: macos-latest
             python-version: '3.13'

.github/workflows/lower-bound-requirements.yml

@@ -17,7 +17,7 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         # minimum supported Python
-        python-version: ['3.8']
+        python-version: ['3.9']
 
     steps:
     - uses: actions/checkout@v5

.github/workflows/release_tests.yml

@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
         include:
           - os: macos-latest
             python-version: '3.13'

.pre-commit-config.yaml

@@ -35,34 +35,30 @@ repos:
     - id: rst-inline-touching-normal
 
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: "v0.12.0"
+  rev: "v0.12.11"
   hooks:
-    - id: ruff-check
-      args: ["--fix", "--show-fixes"]
+  - id: ruff-check
+    args: ["--fix", "--show-fixes"]
+  - id: ruff-format
 
--   repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 24.10.0
-    hooks:
-    - id: black-jupyter
-      types_or: [python, pyi, jupyter]
-
--   repo: https://github.com/adamchainz/blacken-docs
-    rev: 1.19.1
-    hooks:
+- repo: https://github.com/adamchainz/blacken-docs
+  rev: "1.20.0"
+  hooks:
     - id: blacken-docs
-      additional_dependencies: [black==24.10.0]
+      additional_dependencies: [black==25.*]
 
 -   repo: https://github.com/pre-commit/mirrors-mypy
     rev: v1.13.0
     # check the oldest and newest supported Pythons
+    # except skip python 3.9 for numpy, due to poor typing
     hooks:
       - &mypy
         id: mypy
-        name: mypy with Python 3.8
+        name: mypy with Python 3.10
         files: src
         additional_dependencies:
           ['numpy', 'types-tqdm', 'click', 'types-jsonpatch', 'types-pyyaml', 'types-jsonschema', 'importlib_metadata', 'packaging']
-        args: ["--python-version=3.8"]
+        args: ["--python-version=3.10"]
       - <<: *mypy
         name: mypy with Python 3.13
         args: ["--python-version=3.13"]

README.rst

@@ -12,7 +12,7 @@ pure-python fitting/limit-setting/interval estimation HistFactory-style
 
 |PyPI version| |Conda-forge version| |Supported Python versions| |Docker Hub pyhf| |Docker Hub pyhf CUDA|
 
-|Code Coverage| |CodeFactor| |pre-commit.ci Status| |Code style: black|
+|Code Coverage| |CodeFactor| |pre-commit.ci Status| |Code style: ruff|
 
 |GitHub Actions Status: CI| |GitHub Actions Status: Docs| |GitHub Actions Status: Publish|
 |GitHub Actions Status: Docker|
@@ -392,8 +392,8 @@ and grant `OAC-1450377 <https://www.nsf.gov/awardsearch/showAward?AWD_ID=1450377
 .. |pre-commit.ci Status| image:: https://results.pre-commit.ci/badge/github/scikit-hep/pyhf/main.svg
   :target: https://results.pre-commit.ci/latest/github/scikit-hep/pyhf/main
   :alt: pre-commit.ci status
-.. |Code style: black| image:: https://img.shields.io/badge/code%20style-black-000000.svg
-   :target: https://github.com/psf/black
+.. |Code style: ruff| image:: https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json
+   :target: https://github.com/astral-sh/ruff
 
 .. |GitHub Actions Status: CI| image:: https://github.com/scikit-hep/pyhf/actions/workflows/ci.yml/badge.svg
    :target: https://github.com/scikit-hep/pyhf/actions/workflows/ci.yml?query=branch%3Amain