Add cross-platform Homebrew formula with Linux support

[maphew]

Summary

Adds a Homebrew formula that supports both macOS and Linux.

Details

• macOS: Uses zip releases (arm64/x64)
• Linux: Uses AppImage releases (arm64/amd64)
• Includes caveats for FUSE requirement on Linux

Note on homebrew-core

This formula uses pre-built binaries because SourceGit requires .NET 10, which is not yet available in Homebrew. Once Homebrew adds .NET 10 support, this could be refactored to build from source and submitted to homebrew-core.

Usage

Users can install via a tap:

brew tap sourcegit-scm/sourcegit
brew install sourcegit

[maphew]

Written by Ampcode via Batrachian-Toad.

Tested on Bluefin-dx linux (atomic fedora 42)

❯ brew tap-new maphew/sourcegit
...

❯ cp ~/dev/sourcegit/homebrew-formula/sourcegit.rb \
  /var/home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/maphew/homebrew-sourcegit/Formula/

❯ brew install maphew/sourcegit/sourcegit
==> Auto-updating Homebrew...
Warning: No remote 'origin' in /var/home/linuxbrew/.linuxbrew/Homebrew/Library/Taps/maphew/homebrew-sourcegit, skipping update!
==> Fetching downloads for: sourcegit
✔︎ Formula sourcegit (2025.40)                                                                                  Verified     24.2MB/ 24.2MB
==> Installing sourcegit from maphew/sourcegit
==> Caveats
SourceGit is installed as an AppImage.
You may need FUSE to run it: https://github.com/AppImage/AppImageKit/wiki/FUSE

On Fedora/Bluefin: sudo dnf install fuse fuse-libs
Or run with --appimage-extract-and-run flag.
==> Summary
🍺  /home/linuxbrew/.linuxbrew/Cellar/sourcegit/2025.40: 4 files, 24.2MB, built in 1 second
==> Running `brew cleanup sourcegit`...


❯ which sourcegit
/home/linuxbrew/.linuxbrew/bin/sourcegit

❯ sourcegit

Sourcegit ran just fine, no problem opening a local repo. So fuse advisory above probably not needed.

Uninstall and cleanup:

brew uninstall sourcegit
brew untap maphew/sourcegit