It seems the App source '/opt/homebrew/Caskroom/single-file/2.0.10/single-file' is not there.

[AngelaDMerkel]

Output of brew config

HOMEBREW_VERSION: 4.2.15-10-ga570e4d
ORIGIN: https://github.com/Homebrew/brew
HEAD: a570e4da19131eb9e7263f392e863cbaf3325884
Last commit: 19 hours ago
Core tap HEAD: e58798c358ff51c4a3988d7e19e7d3975814bf0b
Core tap last commit: 39 minutes ago
Core tap JSON: 26 Mar 15:55 UTC
Core cask tap HEAD: 83e2f9df9dbcceaac7dd3eb7c96a63a9673ff2fb
Core cask tap last commit: 50 minutes ago
Core cask tap JSON: 26 Mar 16:24 UTC
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_MAKE_JOBS: 12
HOMEBREW_NO_AUTO_UPDATE: set
HOMEBREW_NO_INSTALL_FROM_API: set
HOMEBREW_SORBET_RUNTIME: set
Homebrew Ruby: 3.1.4 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/3.1.4/bin/ruby
CPU: dodeca-core 64-bit arm_blizzard_avalanche
Clang: 15.0.0 build 1500
Git: 2.39.3 => /Library/Developer/CommandLineTools/usr/bin/git
Curl: 8.4.0 => /usr/bin/curl
macOS: 14.2.1-arm64
CLT: 15.1.0.0.1.1700200546
Xcode: N/A
Rosetta 2: false

Output of brew doctor

arning: Some installed kegs have no formulae!
This means they were either deleted or installed manually.
You should find replacements for the following formulae:
  python-docopt

Warning: Some installed formulae are deprecated or disabled.
You should find replacements for the following formulae:
  python-charset-normalizer
  python-idna
  python-requests
  python-urllib3
  youtube-dl

Warning: You have uncommitted modifications to Homebrew/homebrew-cask.
If this is a surprise to you, then you should stash these modifications.
Stashing returns Homebrew to a pristine state but can be undone
should you later need to do so for some reason.
  cd /opt/homebrew/Library/Taps/homebrew/homebrew-cask && git stash -u && git clean -d -f

Uncommitted files:
  ?? Casks/s/single-file.rb

Description of issue

I am trying to produce a new cask for single-file but running into some errors. My single-file.rb is as follows:

cask "single-file" do
  version "2.0.10"
  sha256 "48f4c81b3bf76ab4a2ec1672056fefba73ddceed34fd436c77b6a45ba50de96b"
  url "https://github.com/gildas-lormeau/single-file-cli/releases/download/v#{version}/single-file-aarch64-apple-darwin"
  name "single-file"
  desc "CLI tool for saving a faithful copy of a complete web page in a single HTML file"
  homepage "https://github.com/gildas-lormeau/single-file-cli/blob/master/README.MD"

  livecheck do
    url :url
    strategy :github_latest
  end

  app "single-file"
end

I get the following error: It seems the App source '/opt/homebrew/Caskroom/single-file/2.0.10/single-file' is not there. each time I run brew install --force single-file or brew install single-file and I am not quite sure why. The only other discussion on this issue suggested --force as a possible resolution, but it doesn't seem to make a difference for me.

[Bo98]

The app stanza is for full .app software. You're installing a CLI binary so you likely want binary instead: https://docs.brew.sh/Cask-Cookbook#stanza-binary

[daeho-ro]

Your binary name is single-file-aarch64-apple-darwin and so remove app stanza and add binary: "single-file-aarch64-apple-darwin", target: "single-file" then it will work.