chore: replace black with ruff as the formatter

.github/workflows/test.yaml

@@ -32,8 +32,8 @@ jobs:
         with:
           provider: microk8s
           channel: 1.28-strict/stable
-          juju-channel: 3.2
-          bootstrap-options: '--agent-version=3.2.0'
+          juju-channel: 3.4/stable
+          bootstrap-options: '--agent-version=3.4.2'
 
       - name: Run integration tests
         run: tox -e build-prerequisites,integration -- --model testing

.pre-commit-config.yaml

@@ -14,10 +14,7 @@ repos:
   hooks:
     - id: ruff
       args: [--fix, --exit-non-zero-on-fix]
-- repo: https://github.com/psf/black
-  rev: 24.4.0
-  hooks:
-  - id: black
+    - id: ruff-format
 - repo: https://github.com/pre-commit/mirrors-mypy
   rev: v1.9.0
   hooks:

fmt-requirements.txt

@@ -1,2 +1 @@
-black
 ruff

lint-requirements.txt

@@ -1,3 +1,2 @@
-black
 codespell
 ruff

pyproject.toml

@@ -22,16 +22,25 @@ show_missing = true
 minversion = "6.0"
 log_cli_level = "INFO"
 
-# Formatting tools configuration
-[tool.black]
-line-length = 99
-target-version = ["py310", "py311"]
-
-# Linting tools configuration
+# Linting and formatting tools configuration
 [tool.ruff]
+# Default settings: https://docs.astral.sh/ruff/configuration/
+# Settings: https://docs.astral.sh/ruff/settings/
 line-length = 99
-select = ["E", "W", "F", "C", "N", "D", "I001"]
-extend-ignore = [
+include = ["pyproject.toml", "src/**/*.py", "tests/**/*.py", "lib/charms/glauth_utils/**/*.py"]
+extend-exclude = ["__pycache__", "*.egg_info"]
+preview = true
+
+[tool.ruff.lint]
+# Rules: https://docs.astral.sh/ruff/rules/
+select = ["E", "W", "F", "C", "N", "D", "CPY", "I001"]
+ignore = [
+    "D100",
+    "D101",
+    "D102",
+    "D103",
+    "D105",
+    "D107",
     "D203",
     "D204",
     "D213",
@@ -43,17 +52,21 @@ extend-ignore = [
     "D408",
     "D409",
     "D413",
+    "E501",
+    "N818"
 ]
-ignore = ["D100", "D101", "D102", "D103", "D105", "D107", "E501", "N818"]
-extend-exclude = ["__pycache__", "*.egg_info"]
 per-file-ignores = {"tests/*" = ["D100","D101","D102","D103","D104"]}
 
-[tool.ruff.mccabe]
+[tool.ruff.lint.flake8-copyright]
+author = "Canonical Ltd."
+
+[tool.ruff.lint.mccabe]
 max-complexity = 10
 
-[tool.ruff.pydocstyle]
+[tool.ruff.lint.pydocstyle]
 convention = "google"
 
+# Type checking tools configuration
 [tool.mypy]
 pretty = true
 python_version = "3.10"

tox.ini

@@ -28,16 +28,17 @@ deps =
     pre-commit
     mypy
     types-PyYAML
+    -r{toxinidir}/fmt-requirements.txt
+    -r{toxinidir}/lint-requirements.txt
 commands =
     pre-commit install -t commit-msg
 
 [testenv:fmt]
-description = Apply coding style standards to code
+description = Apply coding style standards
 deps =
     -r{toxinidir}/fmt-requirements.txt
 commands =
-    black {[vars]all_path}
-    ruff --fix {[vars]all_path}
+    ruff format {[vars]all_path}
 
 [testenv:lint]
 description = Check code against coding style standards
@@ -54,8 +55,7 @@ commands =
               --skip {toxinidir}/.mypy_cache \
               --skip {toxinidir}/icon.svg
 
-    ruff {[vars]all_path}
-    black --check --diff {[vars]all_path}
+    ruff check --show-fixes {[vars]all_path}
 
 [testenv:build-prerequisites]
 description = Install necessary Linux packages for python dependencies