Update clang-format and switch to Ruff for Python linting and formatting

.clang-format

@@ -113,6 +113,10 @@ Standard:        Cpp11
 TabWidth:        8
 UseTab:          Never
 ---
+Language:        Json
+IndentWidth:     4
+ColumnLimit:     120
+---
 Language:        JavaScript
 ColumnLimit:     120
 ---

.gitlab-ci.yml

@@ -11,9 +11,6 @@
 variables:
   TARGET_BRANCH: master
 
-default:
-  tags: [cvmfs]
-
 check-copyright:
   image: gitlab-registry.cern.ch/ci-tools/ci-worker:cc7
   script:

.pre-commit-config.yaml

 repos:
 -   repo: local
     hooks:
-    -   id: clang-format
-        name: clang-format
-        types_or: [c++, c, cuda]
-        language: system
-        entry: /cvmfs/lhcb.cern.ch/lib/bin/x86_64-almalinux9/lcg-clang-format-8.0.0 -i
-        args: ["-style=file"]
-        require_serial: false
-    -   id: clang-format
-        name: clang-format (non-standard extensions)
-        types_or: [file]
-        files: \.(icc|icpp)$
-        language: system
-        entry: /cvmfs/lhcb.cern.ch/lib/bin/x86_64-almalinux9/lcg-clang-format-8.0.0 -i
-        args: ["-style=file"]
-        require_serial: false
     -   id: test-inputs-use-testfiledb
         name: test inputs use TestFileDB
         description: make sure all inputs to test options files are going through FileTestDB
@@ -23,7 +8,28 @@ repos:
         types_or: [python, yaml]
         exclude: ".pre-commit-config.yaml"
         entry: 'eoslhcb.cern.ch//eos/lhcb/.*$(?<!fillingscheme.txt")'
--   repo: https://github.com/pre-commit/mirrors-yapf
-    rev: v0.24.0
+-   repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.4.0
+    hooks:
+    -   id: trailing-whitespace
+    -   id: end-of-file-fixer
+    -   id: check-yaml
+        exclude: "\\.clang-format$"
+    -   id: check-added-large-files
+-   repo: https://github.com/pre-commit/mirrors-clang-format
+    rev: v16.0.6
+    hooks:
+    -   id: clang-format
+    -   id: clang-format
+        name: clang-format (non-standard extensions)
+        types_or: [file]
+        files: \.(icc|icpp)$
+-   repo: https://github.com/astral-sh/ruff-pre-commit
+    # Ruff version.
+    rev: v0.9.1
     hooks:
-    -   id: yapf
+    # Run the linter.
+    -   id: ruff
+        args: [ --fix ]
+    # Run the formatter.
+    -   id: ruff-format

ruff.toml

+[lint]
+select = [
+    # Pyflakes
+    "F",
+    # Pycodestyle
+    "E71",
+    "E9",
+    "W1",
+    "W6",
+    # isort
+    "I001"
+]
+ignore = [
+    # this is disabled for now, as we have imports with side effects
+    # and isort breaks such code
+    "F401", # unsued import
+    "F403", # import *
+    "F405", # `xyz` may be undefined, or defined from star imports
+]