Homebrew update warning: "Skipping opencode: tap formula is not trusted"

[carlos-cajina]

Description

Hi 👋 – I installed OpenCode via Homebrew and recently started getting this warning message:

`Warning: The following taps are not trusted:
anomalyco/tap

Homebrew is currently ignoring formulae, casks and commands from these taps because tap trust is required.
Trust specific formulae, casks or commands with:
brew trust --formula //
brew trust --cask //
brew trust --command //
or trust installed formulae from these taps with:
brew trust --formula anomalyco/tap/opencode
You can trust all formulae, casks and commands from these taps with:
brew trust anomalyco/tap
Prefer trusting only the specific formulae, casks or commands you need.
Untap them with:
brew untap anomalyco/tap
To disable trust checks:
export HOMEBREW_NO_REQUIRE_TAP_TRUST=1
This is not recommended and will be removed in a later release.`

While the suggested "fix" clears the warning, it seems it is just a temporary workaround.

Functionality does not seem to be impacted.

Thanks!

Plugins

NA

OpenCode version

1.17.3

Steps to reproduce

1. run brew doctor
2. confirm warning message

Screenshot and/or share link

Operating System

macOS 26.5.1 (25F80)

Terminal

Ghostty 1.3.1

[jonmast]

This is just homebrew working as intended, see https://docs.brew.sh/Tap-Trust

[errchh]

Homebrew refuse to write insecure trust store.
Opencode cannot be installed or updated using brew.

e@linux:~$ brew trust --formula anomalyco/tap/opencode
Error: Refusing to write insecure trust store: trust store directory /home/er/.homebrew is group or world writable.
e@linux:~$ brew install anomalyco/tap/opencode
==> Auto-updating Homebrew...
Adjust how often this is run with `$HOMEBREW_AUTO_UPDATE_SECS` or disable with
`$HOMEBREW_NO_AUTO_UPDATE=1`. Hide these hints with `$HOMEBREW_NO_ENV_HINTS=1` (see `man brew`).
Error: Refusing to write insecure trust store: trust store directory /home/er/.homebrew is group or world writable.
e@linux:~$