DS-970: Add Magic Nix Cache and other workflow changes #215

	name: CI

	on:
	pull_request:
	push:
	branches: [main]
	jobs:
	format:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: DeterminateSystems/nix-installer-action@main
	- uses: DeterminateSystems/magic-nix-cache-action@main
	- name: Check rustfmt
	run: nix develop --command cargo fmt -- --check

	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: DeterminateSystems/nix-installer-action@main
	- uses: DeterminateSystems/magic-nix-cache-action@main
	- name: Build
	run: nix build -L

	NixFlakeCheck:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- uses: DeterminateSystems/flake-checker-action@main
	with:
	fail-mode: true

	NixFormatting:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 0
	- uses: DeterminateSystems/nix-installer-action@main
	- uses: DeterminateSystems/magic-nix-cache-action@main
	- name: Check nixpkgs-fmt formatting
	run: nix develop --command sh -c "git ls-files '*.nix' \| xargs nixpkgs-fmt --check"

	EditorConfig:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 0
	- uses: greut/eclint-action@v0

	SynthesizeIntegration:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	with:
	fetch-depth: 0
	- uses: DeterminateSystems/nix-installer-action@main
	- uses: DeterminateSystems/magic-nix-cache-action@main
	- name: Verify synthesize integration test still passes
	run: nix develop -c ./synthesize/integration-test-cases/verify.sh

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