Add a better mechanism for variables management #2620

	name: hardhat-web3 CI

	on:
	push:
	branches: [$default-branch]
	paths:
	- "packages/hardhat-web3/**"
	- "packages/hardhat-core/**"
	- "packages/hardhat-common/**"
	- "config/**"
	pull_request:
	branches:
	- "**"
	paths:
	- "packages/hardhat-web3/**"
	- "packages/hardhat-core/**"
	- "packages/hardhat-common/**"
	- "config/**"
	workflow_dispatch:

	defaults:
	run:
	working-directory: packages/hardhat-web3

	concurrency:
	group: ${{github.workflow}}-${{github.ref}}
	cancel-in-progress: true

	jobs:
	test_on_windows:
	name: Test hardhat-web3 on Windows with Node 16
	runs-on: windows-latest
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-node@v2
	with:
	node-version: 16
	cache: yarn
	- name: Install
	run: yarn --frozen-lockfile
	- name: Build
	run: yarn build
	- name: Run tests
	run: yarn test

	test_on_macos:
	name: Test hardhat-web3 on MacOS with Node 16
	runs-on: macos-latest
	# disable until actions/virtual-environments#4896 is fixed
	if: ${{ false }}
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-node@v2
	with:
	node-version: 16
	cache: yarn
	- name: Install
	run: yarn --frozen-lockfile
	- name: Build
	run: yarn build
	- name: Run tests
	run: yarn test

	test_on_linux:
	name: Test hardhat-web3 on Ubuntu with Node ${{ matrix.node }}
	runs-on: ubuntu-latest
	strategy:
	matrix:
	node: [16, 18, 20]
	steps:
	- uses: actions/checkout@v2
	- uses: actions/setup-node@v2
	with:
	node-version: ${{ matrix.node }}
	cache: yarn
	- name: Install
	run: yarn --frozen-lockfile
	- name: Build
	run: yarn build
	- name: Run tests
	run: yarn test

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