Phase 3 of the improvement plan (PR 8 of the sequence): the apt/X11 packaging half of Linux support, in separate Linux-specific files. Replaces the old scripts/package-linux.sh, which the audit flagged as "not production packaging" (it copied the whole dev node_modules — including vulnerable build deps — plus docs/prompts/examples/audit files, hardcoded amd64, declared only xinput, lacked desktop/icon/MIME integration, and could build without node_modules). Production builder (packaging/linux/debian/package.sh): - Stages ONLY runtime files: app code, a fixed Electron runtime, and the production npm deps (enumerated via npm ls --omit=dev). Never copies the development node_modules; guards against electron-builder/app-builder-lib leaking in. Fails if node_modules is absent instead of shipping an unusable artifact. - Detects architecture (dpkg --print-architecture, x64/arm64) rather than hardcoding amd64. Generates DEBIAN/control from control.in with proper runtime Depends, real maintainer, and homepage. - Installs a desktop entry, hicolor icons (16–512), .sfgz/.sfglt MIME registration, the launcher, and the license. postinst makes chrome-sandbox setuid and refreshes desktop/MIME/icon caches; postrm cleans them. - Emits a .deb, a portable tarball that now INCLUDES /usr/bin/stepforge (the old tarball omitted it), and a sha256 sums file. Launcher (packaging/linux/common/launcher.sh): - Runs sandboxed; prefers the user-namespace sandbox, accepts a root-owned setuid helper, and otherwise refuses to launch with an actionable message. --no-sandbox requires an explicit STEPFORGE_ALLOW_NO_SANDBOX opt-in. Never installs anything at runtime. Setup (separate build vs runtime, apt only): - scripts/linux/apt/install-runtime-deps.sh (Chromium/Electron libs, X11 tools, portal/PipeWire) and install-build-deps.sh (dpkg-dev, fakeroot, xvfb). Runtime script installs no build tools. Assets: original StepForge icon — packaging/assets/stepforge.svg plus a generator (scripts/make-icons.js) that renders the PNG set with the repo's own rasterizer/PNG writer (no third-party art). npm run icons regenerates them. Wiring: package.json gains package:linux:deb / package:linux:rpm / icons; build-release.sh uses the production builder and requires node_modules; README points at the apt/dnf guides. Tests: tests/unit/packaging-linux.test.js (structural: files present in their separate locations, old script gone, valid desktop entry, templated arch + runtime Depends, launcher gates --no-sandbox, builder requires node_modules and guards dev-dep leaks, apt build/runtime dep separation, original icon set generates a valid PNG) runs in the normal suite; tests/integration/linux/package-deb.test.sh builds a real .deb and asserts the right files present and the dev tree / build tooling / app docs absent (honest skip only when dpkg-deb/node_modules are genuinely missing). Verified locally: 276 unit tests pass; the integration test builds and validates stepforge_0.3.2_amd64.deb; build-release E2E passes with the new production package. Co-Authored-By: Claude Fable 5 <[email protected]>
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StepForge on apt-based Linux (Debian / Ubuntu)
This is the setup and packaging guide for apt-based distributions. Fedora and other dnf-based systems have a separate guide: dnf.md.
Install from the .deb
sudo apt install ./stepforge_<version>_amd64.deb
apt pulls the required runtime libraries automatically (they are declared as
Depends). The package installs:
- the app and a fixed Electron runtime under
/opt/stepforge, - the
stepforgelauncher at/usr/bin/stepforge, - a desktop entry, icons, and
.sfgz/.sfgltfile associations.
Launch it from your application menu or run stepforge.
Sandbox
The launcher runs sandboxed. On most modern kernels the Chromium
user-namespace sandbox works out of the box; the package's postinst also
makes the setuid chrome-sandbox helper usable as a fallback. StepForge will
not silently launch unsandboxed — see the launcher's message if the
sandbox is unavailable.
Install from the portable tarball
tar -xzf stepforge_<version>_linux-x64.tar.gz
# Install the runtime libraries first (see below), then run:
./usr/bin/stepforge # or move opt/stepforge to /opt and use the launcher
The tarball includes the /usr/bin/stepforge launcher (unlike older builds).
Install the runtime libraries with:
bash scripts/linux/apt/install-runtime-deps.sh
Capture capabilities on apt systems
- X11: full per-click capture with an accurate marker (needs
xinput). - Wayland: screen capture via the XDG Desktop Portal + PipeWire; the portal asks permission once per recording. Per-click capture with coordinates is not exposed by Wayland, so recording uses a global hotkey or interval trigger. StepForge reports the active trigger honestly.
Run StepForge and open Settings → Diagnostics to see the detected session type, portal/PipeWire status, and the active capture profile.
Build the .deb yourself
bash scripts/linux/apt/install-build-deps.sh # dpkg-dev, fakeroot, xvfb, …
nvm install && nvm use # pinned Node 22 (see .nvmrc)
npm ci
npm run package:linux:deb # -> build/artifacts/*.deb + tarball + sha256
The builder stages only runtime files: the app code, a fixed Electron
runtime, and production npm dependencies. It never copies the development
node_modules, docs, prompts, or examples, and it fails if node_modules is
missing rather than producing an unusable artifact.