Make default a86 calls lazy and one-shot #190

	name: Build and Test
	on: [push, workflow_dispatch]

	jobs:
	build-and-test:
	strategy:
	fail-fast: false
	matrix:
	os: [ubuntu-22.04, ubuntu-24.04]
	racket-variant: ['CS']
	racket-version: ['8.6', '8.10', '8.14', '8.18', '9.1', 'stable', 'current']
	runs-on: ${{ matrix.os }}
	name: OS ${{ matrix.os }} / Racket ${{ matrix.racket-version }}

	steps:

	- name: Checkout
	uses: actions/checkout@main

	- name: Install Racket
	uses: Bogdanp/setup-racket@v1.15
	with:
	architecture: 'x64'
	distribution: 'full'
	variant: ${{ matrix.racket-variant }}
	version: ${{ matrix.racket-version }}

	- name: Version info
	run: \|
	clang --version
	gcc --version

	- name: Install a86 package
	run: \|
	raco pkg install --no-docs ../a86/

	- name: Install langs package
	run: \|
	# This should use the locally installed a86
	raco pkg install --auto 'https://github.com/cmsc430/langs.git?#next'

	- name: Install libssl
	run: \|
	sudo apt install -y libssl-dev

	- name: Run a86 tests
	run: \|
	raco test -j 4 -p a86

	- name: Run langs tests
	id: langs-tests
	continue-on-error: true
	run: \|
	xvfb-run raco test -j 4 -p langs

	- name: Rerun failing langs tests serially with JIT trace
	id: langs-tests-rerun
	if: steps.langs-tests.outcome == 'failure'
	continue-on-error: true
	env:
	A86_JIT_TRACE: "1"
	run: \|
	xvfb-run raco test -j 1 -p langs

	- name: Fail job if traced rerun also failed
	if: steps.langs-tests.outcome == 'failure' && steps.langs-tests-rerun.outcome == 'failure'
	run: \|
	exit 1

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