Add Qt-based Linux GUI for 7-Zip ZS

[Copilot]

The 7-Zip ZS GUI was entirely Win32-native with no Linux equivalent. This adds a Qt5/Qt6 archive manager (7zz-gui) for Linux that shells out to the existing 7zz binary for all archive operations, keeping it fully decoupled from Windows-specific internals.

New: CPP/7zip/UI/QtGUI/

• MainWindow — QMainWindow with toolbar, menus, drag-and-drop; supports open, extract-all, extract-selected, add files, create archive, and integrity test
• ArchiveModel — QAbstractTableModel parsing 7zz l -slt output into a sortable table (name, size, compressed size, method, modified, CRC)
• main.cpp — entry point; accepts an optional archive path as a positional argument
• 7zz-gui.desktop — XDG desktop entry with MIME-type associations for system integration

Build system

• CMakeLists.txt (repo root) — auto-detects Qt6 then falls back to Qt5; no-ops on Windows
• CPP/7zip/UI/QtGUI/CMakeLists.txt — 7zz-gui target; version string injected via compile definition from the top-level project(VERSION …) to avoid skew

CI (build.yml)

Adds a linux-gui matrix job (x64 + arm64) that installs qtbase5-dev, builds with CMake/Ninja, and uploads 7zz-gui as an artifact. Job scoped to permissions: contents: read.

Usage

cmake -S . -B build-gui -G Ninja -DCMAKE_BUILD_TYPE=Release
cmake --build build-gui --parallel
# open an archive directly:
build-gui/CPP/7zip/UI/QtGUI/7zz-gui archive.7z

---

⚡ Quickly spin up Copilot coding agent tasks from anywhere on your macOS or Windows machine with Raycast.

[GrassBlock1]

@copilot can you send me a screenshotof the application here

[Copilot]

@copilot can you send me a screenshotof the application here

Here's the screenshot of 7zz-gui running on Linux with a test archive open (commit 2dd9d5a):

The window shows the main table listing the archive contents (name, size, compressed size, method, modified date, CRC), the toolbar (Open, Extract All, Add Files, Create Archive, Test), and the status bar showing the item count. Drag-and-drop of archive files onto the window is also supported.