"formulae require at least a URL" error on M1 Pro Macbook

[davidearthly]

Reproduction steps

GIVEN I am using an M1 Pro Macbook
WHEN I run brew install kreuzwerker/taps/m1-terraform-provider-helper
EXPECTED
THEN m1-terraform-provider-helper is installed successfully
ACTUAL
THEN I get the following error:

Error: Invalid formula: /opt/homebrew/Library/Taps/kreuzwerker/homebrew-taps/awsu.rb
formulae require at least a URL
Error: Cannot tap kreuzwerker/taps: invalid syntax in tap!

Notes

We can see

homebrew-taps/awsu.rb

Lines 10 to 19 in 940c119

	on_macos do
	if Hardware::CPU.intel?
	url "https://github.com/kreuzwerker/awsu/releases/download/v2.3.8/awsu_2.3.8_Darwin_x86_64.tar.gz"
	sha256 "4d600069371fe48f3a7131d6b1abe9fcef7e7b393e054309f26e6e9b953ca469"
	def install
	bin.install "awsu"
	end
	end
	end

does not contain the branch for ARM

Whereas

homebrew-taps/m1-terraform-provider-helper.rb

Lines 10 to 27 in 940c119

	on_macos do
	if Hardware::CPU.arm?
	url "https://github.com/kreuzwerker/m1-terraform-provider-helper/releases/download/0.2.3/m1-terraform-provider-helper_0.2.3_Darwin_arm64.tar.gz", :using => CurlDownloadStrategy
	sha256 "a5d7b65f42795f880bf032f79a635b1ad47d3d97ecb7fb62331aff3e5682049b"
	def install
	bin.install "m1-terraform-provider-helper"
	end
	end
	if Hardware::CPU.intel?
	url "https://github.com/kreuzwerker/m1-terraform-provider-helper/releases/download/0.2.3/m1-terraform-provider-helper_0.2.3_Darwin_amd64.tar.gz", :using => CurlDownloadStrategy
	sha256 "2f3c88ecd9541c4a4394a75756a4dfac83d084b4b572ea5def89367fd3cadbd7"
	def install
	bin.install "m1-terraform-provider-helper"
	end
	end
	end

does.