nix: fix hash #7

	# This is a basic workflow to help you get started with Actions

	name: Cachix

	# Controls when the action will run. Triggers the workflow on push or pull request
	# events but only for the master branch
	on:
	push:
	pull_request:

	# A workflow run is made up of one or more jobs that can run sequentially or in parallel
	jobs:
	# This workflow contains a single job called "build"
	build-cachix:
	# The type of runner that the job will run on
	runs-on: ubuntu-latest
	env:
	CACHIX_SIGNING_KEY: ${secrets.CACHIX_SIGNING_KEY}
	# Steps represent a sequence of tasks that will be executed as part of the job
	steps:
	# Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
	- uses: actions/checkout@v2
	- uses: cachix/install-nix-action@v12
	with:
	nix_path: nixpkgs=channel:nixos-unstable
	- uses: cachix/cachix-action@v8
	with:
	name: lucasew-github
	signingKey: '${{ secrets.CACHIX_SIGNING_KEY }}'
	- run: nix-build

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