Add integration test workflow #2

	name: Integration tests

	on:
	pull_request:
	push:
	branches: [main]

	jobs:
	checks:
	runs-on: ubuntu-22.04
	permissions:
	contents: read
	id-token: write
	env:
	FLAKEHUB_API_ENDPOINT: api.flakehub.com
	FLAKEHUB_WEB_ENDPOINT: https://flakehub.com
	NIX_CONF: /etc/nix/nix.conf
	FLAKEHUB_CACHE: "https://cache.flakehub.com"
	steps:
	- uses: actions/checkout@v3

	- name: Setup
	id: setup
	run: \|
	TMP=$(mktemp -d)
	NETRC="${TMP}/netrc"

	REQUEST_TOKEN="${ACTIONS_ID_TOKEN_REQUEST_TOKEN}"
	ROOT_URL="${ACTIONS_ID_TOKEN_REQUEST_URL}"
	JWT_ID_TOKEN=$(curl \
	--header "authorization: bearer ${REQUEST_TOKEN}" \
	--header "accept: application/json;api-version=2.0" \
	--header "content-type: application/json" \
	--header "user-agent: magic-nix-cache" \
	"${ROOT_URL}&audience=${{ env.FLAKEHUB_API_ENDPOINT }}")

	echo "::set-output name=token::${JWT_ID_TOKEN}"
	echo "::set-output name=netrc::${NETRC}"

	- name: Install Nix
	uses: DeterminateSystems/nix-installer-action@main

	- name: Set up netrc file
	env:
	NETRC: ${{ steps.setup.outputs.netrc }}
	TOKEN: ${{ steps.setup.outputs.token }}
	run: \|
	echo "machine ${{ env.FLAKEHUB_WEB_ENDPOINT }} login flakehub password ${{ env.TOKEN }}" > "${{ env.NETRC }}"
	echo "machine ${{ env.FLAKEHUB_API_ENDPOINT }} login flakehub password ${{ env.TOKEN }}" >> "${{ env.NETRC }}"
	echo "extra-substituters = ${{ env.FLAKEHUB_CACHE }}/?trusted=1" >> "${{ env.NIX_CONF }}"
	echo "netrc-file = ${{ env.NETRC }}" >> "${{ env.NIX_CONF }}"

	echo "netrc file:"
	cat "${{ env.NETRC }}"

	echo "Nix config:"
	cat "${{ env.NIX_CONF }}"

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