Brew warning on Linux

[elthariel]

The problem

I'm running zsh on a Linux distribution and was giving this plugin a try as a dependency of another one.
After adding this bundle to antigen, I'm receiving these warning when starting a shell:

[WARNING]: Please install brew or use antibody bundle hadenlabs/zsh-brew 
core::internal::core::install:4: command not found: brew
[WARNING]: Please install brew or use antibody bundle hadenlabs/zsh-brew 
core::internal::core::install:4: command not found: brew
[WARNING]: Please install brew or use antibody bundle hadenlabs/zsh-brew 
core::internal::core::install:4: command not found: brew
[WARNING]: Please install brew or use antibody bundle hadenlabs/zsh-brew 
core::internal::core::install:4: command not found: brew
[WARNING]: Please install brew or use antibody bundle hadenlabs/zsh-brew 
core::internal::core::install:4: command not found: brew

On linux, we (mostly) don't care about brew, so this dependency should be relaxed or it should be explicitly stated as a macOS plugin :)

PS: You need to append @main at the antigen command, which doesn't like repos without a master branch :(

Environment

• OS: Linux
• Version : main

Checklist (after created issue)

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