Edits to lower_layer.md (#2343) #2206

	name: coverage

	on:
	push:
	branches:
	- main
	schedule:
	# Prime the caches every Monday
	- cron: 0 1 * * MON

	jobs:
	build:
	if: github.repository_owner == 'mirage'
	strategy:
	fail-fast: false
	matrix:
	os:
	- ubuntu-latest
	ocaml-compiler:
	- 5.1.x

	runs-on: ${{ matrix.os }}

	steps:
	- name: Set git to use LF
	run: \|
	git config --global core.autocrlf false
	git config --global core.eol lf

	- name: Checkout code
	uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- name: Use OCaml ${{ matrix.ocaml-compiler }}
	uses: ocaml/setup-ocaml@v3
	with:
	ocaml-compiler: ${{ matrix.ocaml-compiler }}

	- name: Install Opam dependencies
	run: opam install . --with-test --deps-only

	- name: Build
	run: opam exec -- dune build

	- name: Run tests with coverage instrumentation
	run: opam exec -- dune runtest --instrument-with bisect_ppx

	- name: Send coverage report to Codecov
	run: opam exec -- bisect-ppx-report send-to Codecov --verbose
	env:
	CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
	PULL_REQUEST_NUMBER: ${{ github.event.number }}

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