coverage #386

	name: coverage

	on:
	pull_request:

	workflow_dispatch:

	schedule:
	# nightly
	- cron: '31 1 * * *' # 01:31 UTC, 02:31/03:31 Munich, 03:31/04:31 Tartu
	# GitHub Actions load is high at minute 0, so avoid that

	jobs:
	coverage:
	strategy:
	fail-fast: false
	matrix:
	os:
	- ubuntu-latest
	ocaml-compiler:
	- ocaml-variants.4.14.2+options,ocaml-option-flambda # matches opam lock file
	# don't add any other because they won't be used

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

	env:
	OCAMLRUNPARAM: b

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Set up OCaml ${{ matrix.ocaml-compiler }}
	env:
	# otherwise setup-ocaml pins non-locked dependencies
	# https://github.com/ocaml/setup-ocaml/issues/166
	OPAMLOCKED: locked
	uses: ocaml/setup-ocaml@v3
	with:
	ocaml-compiler: ${{ matrix.ocaml-compiler }}

	- name: Install graph-easy # TODO: remove if depext --with-test works
	if: ${{ matrix.os == 'ubuntu-latest' }}
	run: sudo apt install -y libgraph-easy-perl

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

	- name: Install coverage dependencies
	run: opam install bisect_ppx

	- name: Build
	run: ./make.sh coverage

	- name: Download Linux headers
	run: ./make.sh headers

	- name: Test
	run: opam exec -- dune runtest --instrument-with bisect_ppx

	- run: opam exec -- bisect-ppx-report send-to Coveralls
	env:
	COVERALLS_REPO_TOKEN: ${{ secrets.COVERALLS_REPO_TOKEN }}
	PULL_REQUEST_NUMBER: ${{ github.event.number }}

	- uses: actions/upload-artifact@v4
	if: always()
	with:
	name: suite_result
	path: tests/suite_result/

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