Homebrew deprecated the postflight and uninstall_preflight cask stanzas
in favour of the declarative *_steps DSL, so every brew command that
evaluates netbirdio/tap now prints deprecation warnings. Once the
deprecation becomes a disable the generated cask stops loading and
netbird-ui can no longer be installed or upgraded through Homebrew.
The *_steps blocks take JSON-serialisable steps run in a sandbox rather
than arbitrary Ruby, so system_command is re-expressed as run/remove.
The two postflight blocks merge into one because a cask carries only a
single instance, preserving the original order. set_permissions moves
from a hardcoded /Applications to base: :appdir, matching what the
installer invocation already did. The launchctl fallbacks keep their
tolerant semantics through must_succeed: false, and remove is a no-op
when the plist is absent.
Daniele Casciani
df3756151f