Why SwiftLint is not installed through Homebrew?

[AllDmeat]

Our workflow installs bunch of dependencies through homebrew, swiftlint amongst them.
On our self-hosted runners everything works as expected, while GitHub-hosted runners with macos-12 image fail to install swiftlint.

Basically we have a Brewfile and just invoke brew bundle from within our job, which fails. It can't properly install swiftlint if:

1. One is already present in the system, and
2. It was installed not though homebrew.

We've made a workaround for that by moving swiftlint out of Brewfile and introducing a separate step for it's installation like this:
which swiftlint || brew install swiftlint

But looks like it can be simplified if macOS images would have swiftlint preinstalled via brew.

[vpolikarpov-akvelon]

Hey @AllDmeat. Sorry for the late response. There are some historical reasons to install swiftlint that way. I investigated it and came to a conclusion that now we can switch to homebrew. Here is PR for that, and it's already merged: #7912. Now one should only wait for the change to be released.

[kgantchev]

Our workflow installs bunch of dependencies through homebrew, swiftlint amongst them.

Another way to deal with this is with FlyCI. Recently we have updated our images to support SwiftLint out of the box so you don't have to install it.

What other dependencies would you like to see on your macOS images?