Installing Cask gaphor results in checksum error

[roland-KA]

Output of brew config

HOMEBREW_VERSION: 5.1.6
ORIGIN: https://github.com/Homebrew/brew
HEAD: 299ab19496df6fc76e8356c0b87100ff91ef827e
Last commit: 4 days ago
Branch: stable
Core tap JSON: 17 Apr 12:01 UTC
Core cask tap JSON: 17 Apr 12:01 UTC
HOMEBREW_PREFIX: /opt/homebrew
HOMEBREW_CASK_OPTS: []
HOMEBREW_DOWNLOAD_CONCURRENCY: 16
HOMEBREW_EDITOR: code
HOMEBREW_FORBID_PACKAGES_FROM_PATHS: set
HOMEBREW_MAKE_JOBS: 8
Homebrew Ruby: 4.0.2 => /opt/homebrew/Library/Homebrew/vendor/portable-ruby/4.0.2_1/bin/ruby
CPU: octa-core 64-bit arm_firestorm_icestorm
Clang: 17.0.0 build 1700
Git: 2.53.0 => /opt/homebrew/bin/git
Curl: 8.7.1 => /usr/bin/curl
macOS: 26.3.1-arm64
CLT: 26.3.0.0.1.1771626560
Xcode: N/A
Rosetta 2: false

Output of brew doctor

Warning: Some directories in the Caskroom do not have valid metadata.
  /opt/homebrew/Caskroom/git-credential-manager-core
The following cask cannot be upgraded as-is.
To fix this, run:
  brew reinstall --cask --force git-credential-manager-core

Description of issue

When I try to install the cask gaphor (using brew install gaphor), I get the following error message:

✘ Cask gaphor (3.3.1)                                                   Verifying    50.2MB/ 50.2MB
Error: Cask reports different checksum:     4c25f33900c416d60cb51c19eff0e8e07144e1c9c69c0ecadcb4860aa218edb2
       SHA-256 checksum of downloaded file: 3fa7aa35f41081f5e3868dbb7778e58ada71d7678fff144cbd50ab0808e97f99

It seems that there is something not in sync.

Relevant casks

gaphor

[p-linnane]

https://docs.brew.sh/Common-Issues#cask---checksum-does-not-match

[koenyskout]

Both checksums in https://github.com/Homebrew/homebrew-cask/blob/main/Casks/g/gaphor.rb are wrong. They should be 3fa7aa35f41081f5e3868dbb7778e58ada71d7678fff144cbd50ab0808e97f99 (for arm) and ec315358592b2d6193b0cf540b631510d1b8aa9712ca5879f24883ce602ff56c (for intel).