make: replace flake8 with ruff

Ruff (https://github.com/astral-sh/ruff) is a Python linter
written in Rust, designed to replace Flake8. It is significantly
faster and actively maintained.

In addition to replacing flake8 with ruff, this patch also
creates separate makefile targets for ruff, shellcheck and
codespell, so that they can be tested independently.

RUFF_FLAGS can be used to specify options such as '--fix'.
Example:
	make lint
	make ruff RUFF_FLAGS=--fix

Signed-off-by: Radostin Stoyanov <rstoyanov@fedoraproject.org>

scripts/build/Dockerfile.alpine

@@ -41,7 +41,6 @@ RUN apk add \
 	go \
 	e2fsprogs \
 	py-yaml \
-	py3-flake8 \
 	py3-importlib-metadata \
 	asciidoctor
 

scripts/build/Dockerfile.archlinux

@@ -31,7 +31,6 @@ RUN pacman -Syu --noconfirm \
 	bash \
 	go \
 	python-yaml \
-	flake8 \
 	asciidoctor \
 	python-junit-xml \
 	python-importlib-metadata \

scripts/build/Dockerfile.centos8

@@ -26,7 +26,6 @@ RUN yum install -y --allowerasing \
 	protobuf-c-devel \
 	protobuf-devel \
 	python3-devel \
-	python3-flake8 \
 	python3-PyYAML \
 	python3-protobuf \
 	python3-pip \

scripts/ci/prepare-for-fedora-rawhide.sh

@@ -23,7 +23,6 @@ dnf install -y \
 	procps-ng \
 	protobuf-c-devel \
 	protobuf-devel \
-	python3-flake8 \
 	python3-PyYAML \
 	python3-protobuf \
 	python3-junit_xml \

scripts/ci/run-ci-tests.sh

@@ -4,7 +4,7 @@ set -x -e
 CI_PKGS=(protobuf-c-compiler libprotobuf-c-dev libaio-dev libgnutls28-dev
 		libgnutls30 libprotobuf-dev protobuf-compiler libcap-dev
 		libnl-3-dev gdb bash libnet-dev util-linux asciidoctor
-		libnl-route-3-dev time flake8 libbsd-dev python3-yaml
+		libnl-route-3-dev time libbsd-dev python3-yaml
 		libperl-dev pkg-config python3-protobuf python3-pip
 		python3-importlib-metadata python3-junit.xml libdrm-dev)
 

scripts/ci/vagrant.sh

@@ -38,8 +38,8 @@ setup() {
 	ssh default sudo dnf upgrade -y
 	ssh default sudo dnf install -y gcc git gnutls-devel nftables-devel libaio-devel \
 		libasan libcap-devel libnet-devel libnl3-devel libbsd-devel make protobuf-c-devel \
-		protobuf-devel python3-flake8 python3-protobuf python3-importlib-metadata \
-		python3-junit_xml rubygem-asciidoctor iptables libselinux-devel libbpf-devel
+		protobuf-devel python3-protobuf python3-importlib-metadata python3-junit_xml \
+		rubygem-asciidoctor iptables libselinux-devel libbpf-devel
 	# Disable sssd to avoid zdtm test failures in pty04 due to sssd socket
 	ssh default sudo systemctl mask sssd
 	ssh default cat /proc/cmdline

scripts/ruff.toml

@@ -0,0 +1,4 @@
+# Ignore `E401` (import violations) in all `__init__.py` files
+[lint.per-file-ignores]
+"__init__.py" = ["F401"]
+