pep440: some minor refactoring, mostly around error types #2014

	name: CI

	on:
	push:
	branches: [ main ]
	pull_request:
	workflow_dispatch:

	concurrency:
	group: ${{ github.workflow }}-${{ github.ref_name }}-${{ github.event.pull_request.number \|\| github.sha }}
	cancel-in-progress: true

	env:
	CARGO_INCREMENTAL: 0
	CARGO_NET_RETRY: 10
	CARGO_TERM_COLOR: always
	RUSTUP_MAX_RETRIES: 10
	PYTHON_VERSION: "3.12"

	jobs:
	cargo-fmt:
	name: "cargo fmt"
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: "Install Rust toolchain"
	run: rustup component add rustfmt
	- name: "rustfmt"
	run: cargo fmt --all --check

	cargo-clippy:
	name: "cargo clippy"
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: "Install Rust toolchain"
	run: \|
	rustup component add clippy
	- uses: Swatinem/rust-cache@v2
	- name: "Clippy"
	run: cargo clippy --workspace --all-targets --all-features -- -D warnings

	cargo-test:
	strategy:
	matrix:
	os: [ ubuntu-latest ]
	runs-on: ${{ matrix.os }}
	name: "cargo test \| ${{ matrix.os }}"
	steps:
	- uses: actions/checkout@v4
	# TODO(konstin): Mock the venv in the installer test so we don't need 3.8 anymore
	- name: "Install Python"
	uses: actions/setup-python@v4
	with:
	python-version: \|
	3.8
	${{ env.PYTHON_VERSION }}
	- name: "Install Rust toolchain"
	run: rustup show
	- name: "Install cargo insta"
	uses: taiki-e/install-action@v2
	with:
	tool: cargo-insta
	- uses: Swatinem/rust-cache@v2
	- name: "Tests (Ubuntu)"
	if: ${{ matrix.os == 'ubuntu-latest' }}
	run: cargo insta test --all --all-features --unreferenced reject

Provide feedback