Merge pull request #137 from GaloisInc/sc/telemetry #3

	name: Telemetry CI

	on:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	# Cancel in-progress job when a new push is performed
	concurrency:
	group: ci-${{ github.workflow }}-${{ github.ref }}
	cancel-in-progress: true

	jobs:
	build:
	strategy:
	matrix:
	ocaml-version: [5.1.1]
	os: [ubuntu-22.04]

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

	steps:
	- name: Check out repository
	uses: actions/checkout@v4

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

	- name: Restore `_opam`
	id: cache-opam-restore
	uses: actions/cache/restore@v4
	with:
	path: telemetry/_opam
	key: ${{ matrix.ocaml-version }}-${{ hashFiles('telemetry/telemetry.opam.locked') }}

	- name: Install telemetry dependencies
	working-directory: telemetry
	# If we restored a `_opam` directory here, we need not (and should not)
	# try to create a switch. The presence of `_opam` seems basically
	# isomorphic to the presence of a switch, and opam will fail to `create`
	# a new switch if one is already present.
	run: ls _opam \|\| opam switch create . ocaml.${{ matrix.ocaml-version }} --deps-only --locked -y

	- name: Cache `_opam`
	if: steps.cache-opam-restore.outputs.cache-hit != 'true'
	uses: actions/cache/save@v4
	with:
	path: telemetry/_opam
	key: ${{ steps.cache-opam-restore.outputs.cache-primary-key }}

	- name: Build telemetry
	working-directory: telemetry
	run: eval $(opam env) && dune build

	- name: Run telemetry tests
	working-directory: telemetry
	run: eval $(opam env) && dune test

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