Windows integration
The File Explorer context menu and the Windows installer.
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On Windows, Arca plugs into File Explorer so you can open and extract archives without touching a terminal.
Explorer context menu
windows/ holds the Explorer extension, in both flavours:
Both target Windows 11. The .7z integration needs Windows runtime verification
separately from Linux shell checks.
Progress, not silence
Right-clicking an archive opens the Arca window with a progress bar rather than running the command line with no console. An extraction that fails, or that finds a file already there, says so instead of doing nothing.
Installer
The installer is produced with Inno Setup from windows/arca.iss. Download arca-setup-<version>-x86_64.exe from the latest release, or read windows/README.md for building it yourself.
The installer registers .7z alongside ZIP/TAR/gzip for Open With and default-app
selection. Explorer recognizes .7z for Open/Extract and strips its extension
for the destination folder. Add to archive creates a new archive containing the
selection; it does not mutate the selected 7z. The creation dialog offers 7z.
Why it lives outside the workspace
windows/arca-shell needs COM, and therefore unsafe, and only compiles on Windows. It’s excluded from the Cargo workspace so that cargo build keeps working on Linux and macOS.