Merge pull request #1081 from hash-org/repr/remove-empty-gap #1927

	name: Rust

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

	env:
	CARGO_TERM_COLOR: always

	jobs:
	build_and_test:
	runs-on: ["${{ matrix.distro }}"]
	name: Build on ${{ matrix.distro }} ${{ matrix.arch }}

	strategy:
	matrix:
	include:
	- arch: x64
	distro: ubuntu-latest
	steps:
	- name: Checkout source code
	uses: actions/checkout@v2

	- name: Cache LLVM
	id: cache-llvm
	uses: actions/cache@v2
	with:
	path: ./llvm
	key: llvm-18

	- name: Install LLVM
	uses: KyleMayes/install-llvm-action@abb6cec0ec431e834bc5e5090ea39a2d1d63a4c6 # v2.0.3
	with:
	version: "18.1.4"
	cached: ${{ steps.cache-llvm.outputs.cache-hit }}

	- name: Install Rust nightly
	run: \|
	rustup toolchain install nightly
	rustup component add clippy --toolchain nightly
	rustup component add rustfmt --toolchain nightly
	rustup default nightly

	- name: Dependency caching
	uses: Swatinem/rust-cache@v2

	- name: LLVM location
	# @@Dumbness: we need to install `libtinfo5` because of:
	# - https://github.com/hash-org/hashc/actions/runs/9634436024/job/26570084536
	run: \|
	sudo apt install -y libtinfo5
	echo $LLVM_PATH
	$LLVM_PATH/bin/llvm-config --version

	- name: Run tests
	run: "LLVM_SYS_181_PREFIX=$LLVM_PATH cargo test --all --verbose"

	- name: Run clippy
	run: "LLVM_SYS_181_PREFIX=$LLVM_PATH cargo clippy --all -- -D warnings"

	- name: Check formatting
	run: "cargo fmt --all -- --check"

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