macOS only formula

[quackerex]

Output of brew config

n/a

Output of brew doctor

n/a

Description of issue

I have a formula that only works on macOS. I have set macOS and Xcode as dependencies, but the brew test bot still try to build that on linux. How do I set a formula so it only build on macOS?

[SMillerDev]

If it actually tries to build your dependency declaration is incorrect. It will always run the Linux action though

[quackerex]

This is what I have.

depends_on xcode: ["15.0.1", :build]
depends_on macos: :sonoma
uses_from_macos "swift"

For some reason the linux action install swift from brew in ubuntu even though it explicitly tell to use macOS Sonoma and swift from macOS.

[quackerex]

The reason for failing is that brew swift is not up to date. Still why is it trying to build in the first place?

[Bo98]

If you want to restrict it to macOS, you'll need to add depends_on :macos. This can work in addition to what you have.

It's perhaps a little confusing, but depends_on macos: :sonoma just says that the minimum macOS should be Sonoma, rather than it needs to be macOS. It makes a little more sense when you consider formulae that do support both macOS and Linux, but just don't work on some older macOS. Perhaps we should have named it depends_on minimum_macos: :sonoma, but it comes from a time when we didn't support Linux at all.

[quackerex]

depends_on :macos passed the linux test by showing "Warning: macOS is required for this software".

Perhaps we should have named it depends_on minimum_macos: :sonoma, but it comes from a time when we didn't support Linux at all.

Yeah it is bit confusing as I assumed depends_on macos: :sonoma to mean the formula need macOS Sonoma to work.