Can't uninstall deprecated quick look plugins #6797

hynek · 2026-04-13T06:12:44Z

hynek
Apr 13, 2026

Output of `brew config`

HOMEBREW_VERSION: 5.1.5-115-gaad0a5c
ORIGIN: https://github.com/Homebrew/brew
HEAD: aad0a5c1556968bc0898771191dc5e3f79fdd560
Last commit: 8 hours ago
Branch: main
Core tap JSON: 13 Apr 05:50 UTC
Core cask tap JSON: 13 Apr 05:50 UTC
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_BAT_THEME: Catppuccin Mocha
HOMEBREW_CASK_OPTS: []
HOMEBREW_DISPLAY: /var/run/com.apple.launchd.aHzdJJAnud/org.xquartz:0
HOMEBREW_DOWNLOAD_CONCURRENCY: 24
HOMEBREW_EDITOR: nvim
HOMEBREW_FORBID_PACKAGES_FROM_PATHS: set
HOMEBREW_GITHUB_API_TOKEN: set
HOMEBREW_MAKE_JOBS: 12
HOMEBREW_SORBET_RUNTIME: set
Homebrew Ruby: 4.0.2 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/4.0.2_1/bin/ruby
CPU: dodeca-core 64-bit arm_blizzard_avalanche
Clang: 21.0.0 build 2100
Git: 2.53.0 => /opt/homebrew/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 26.4.1-arm64
CLT: 26.4.0.0.1774242506
Xcode: 26.4
Metal Toolchain: N/A
Rosetta 2: false

Output of `brew doctor`

Warning: Some installed casks are deprecated or disabled.
You should find replacements for the following casks:
  qlcolorcode
  qlprettypatch
  qlstephen
  quicklook-json

Warning: You have unlinked kegs in your Cellar.
Leaving kegs unlinked can lead to build-trouble and cause formulae that depend on
those kegs to fail to run properly once built. Run `brew link` on these:
  [email protected]
  [email protected]
  [email protected]

Description of issue

In my rather old installation, I've got a bunch of quicklook plugins that brew now regularly warns me about, but if I try to uninstall them I'm getting some internal error:

$ brew uninstall qlcolorcode qlprettypatch qlstephen quicklook-json
==> Uninstalling Cask qlcolorcode
==> Uninstalling Cask qlprettypatch
==> Uninstalling Cask qlstephen
==> Uninstalling Cask quicklook-json
Error: Problems with multiple casks:
Incompatible type for arg `verbose` in signature for override of method `uninstall_phase`:
* Base: `T::Boolean` (in Cask::Artifact::Moved at /opt/homebrew/Library/Homebrew/cask/artifact/moved.rb:45)
* Override: `` (in Cask::Artifact::Qlplugin at /opt/homebrew/Library/Homebrew/cask/artifact/qlplugin.rb:42)
(The types must be contravariant.)
Incompatible type for arg `verbose` in signature for override of method `uninstall_phase`:
* Base: `T::Boolean` (in Cask::Artifact::Moved at /opt/homebrew/Library/Homebrew/cask/artifact/moved.rb:45)
* Override: `` (in Cask::Artifact::Qlplugin at /opt/homebrew/Library/Homebrew/cask/artifact/qlplugin.rb:42)
(The types must be contravariant.)
Incompatible type for arg `verbose` in signature for override of method `uninstall_phase`:
* Base: `T::Boolean` (in Cask::Artifact::Moved at /opt/homebrew/Library/Homebrew/cask/artifact/moved.rb:45)
* Override: `` (in Cask::Artifact::Qlplugin at /opt/homebrew/Library/Homebrew/cask/artifact/qlplugin.rb:42)
(The types must be contravariant.)
Incompatible type for arg `verbose` in signature for override of method `uninstall_phase`:
* Base: `T::Boolean` (in Cask::Artifact::Moved at /opt/homebrew/Library/Homebrew/cask/artifact/moved.rb:45)
* Override: `` (in Cask::Artifact::Qlplugin at /opt/homebrew/Library/Homebrew/cask/artifact/qlplugin.rb:42)
(The types must be contravariant.)

What do I do?

Relevant casks

quicklook-json

Answered by bevanjkay

Apr 13, 2026

I have opened a PR that should resolve this issue.
Homebrew/brew#22004

View full answer

bevanjkay · 2026-04-13T06:27:21Z

bevanjkay
Apr 13, 2026
Collaborator

Does it work with --force, or with unset HOMEBREW_SORBET_RUNTIME?

3 replies

hynek Apr 13, 2026
Author

It does not:

$ brew uninstall --force qlcolorcode qlprettypatch qlstephen quicklook-json
==> Uninstalling Cask qlcolorcode
==> Uninstalling Cask qlprettypatch
==> Uninstalling Cask qlstephen
==> Uninstalling Cask quicklook-json
Error: Problems with multiple casks:
Incompatible type for arg `verbose` in signature for override of method `uninstall_phase`:
* Base: `T::Boolean` (in Cask::Artifact::Moved at /opt/homebrew/Library/Homebrew/cask/artifact/moved.rb:45)
* Override: `` (in Cask::Artifact::Qlplugin at /opt/homebrew/Library/Homebrew/cask/artifact/qlplugin.rb:42)
(The types must be contravariant.)
Incompatible type for arg `verbose` in signature for override of method `uninstall_phase`:
* Base: `T::Boolean` (in Cask::Artifact::Moved at /opt/homebrew/Library/Homebrew/cask/artifact/moved.rb:45)
* Override: `` (in Cask::Artifact::Qlplugin at /opt/homebrew/Library/Homebrew/cask/artifact/qlplugin.rb:42)
(The types must be contravariant.)
Incompatible type for arg `verbose` in signature for override of method `uninstall_phase`:
* Base: `T::Boolean` (in Cask::Artifact::Moved at /opt/homebrew/Library/Homebrew/cask/artifact/moved.rb:45)
* Override: `` (in Cask::Artifact::Qlplugin at /opt/homebrew/Library/Homebrew/cask/artifact/qlplugin.rb:42)
(The types must be contravariant.)
Incompatible type for arg `verbose` in signature for override of method `uninstall_phase`:
* Base: `T::Boolean` (in Cask::Artifact::Moved at /opt/homebrew/Library/Homebrew/cask/artifact/moved.rb:45)
* Override: `` (in Cask::Artifact::Qlplugin at /opt/homebrew/Library/Homebrew/cask/artifact/qlplugin.rb:42)
(The types must be contravariant.)

And I don't have any sorbets: :)

env | grep HOMEBREW_SORBET_RUNTIME | wc -l
       0

bevanjkay Apr 13, 2026
Collaborator

I have opened a PR that should resolve this issue.
Homebrew/brew#22004

Answer selected by hynek

hynek Apr 13, 2026
Author

thanks that worked; I've got rid of the pesky extensions!

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Homebrew

Can't uninstall deprecated quick look plugins #6797

Uh oh!

{{title}}

Uh oh!

Replies: 1 comment 3 replies

Uh oh!

{{title}}

Uh oh!

Uh oh!

{{title}}

Uh oh!

Uh oh!

{{title}}

Uh oh!

Uh oh!

{{title}}

Uh oh!

Select a reply

Uh oh!

Homebrew

Can't uninstall deprecated quick look plugins #6797

Uh oh!

hynek Apr 13, 2026

Output of brew config

Output of brew doctor

Description of issue

Relevant casks

Replies: 1 comment · 3 replies

Uh oh!

bevanjkay Apr 13, 2026 Collaborator

Uh oh!

hynek Apr 13, 2026 Author

Uh oh!

bevanjkay Apr 13, 2026 Collaborator

Uh oh!

hynek Apr 13, 2026 Author

hynek
Apr 13, 2026

Output of `brew config`

Output of `brew doctor`

Replies: 1 comment 3 replies

bevanjkay
Apr 13, 2026
Collaborator

hynek Apr 13, 2026
Author

bevanjkay Apr 13, 2026
Collaborator

hynek Apr 13, 2026
Author