The script assumed Ubuntu on x86_64 in every line of it. detect_os() now runs
first and fills in OS, OS_NAME, OS_VERSION, PM, ARCH and IS_WSL, so the steps
have something to branch on as support for other systems is added.
Read from /etc/os-release rather than probing for a binary: a machine can have
more than one package manager on PATH, and only os-release can say which
distribution this actually is or give a version worth printing. Sourced in a
subshell so its NAME, VERSION and ID do not leak in here. ID_LIKE is the
fallback, so Pop!_OS, Mint and EndeavourOS resolve without being named.
ARCH is normalised to amd64/arm64 in one place because upstream disagrees —
Neovim ships aarch64, Go and Docker ship arm64, lazygit ships x86_64 — and
several steps hardcode one spelling today.
Windows exits with a message pointing at WSL2. WSL itself is detected and
warned about rather than refused: it reports as Linux but has no real systemd
session, so the suspend, logind and boot-hang steps do nothing there.
Everything below pre-flight is still apt and systemd only, so a gate refuses
pacman/dnf/brew by name rather than half-building a machine and stopping
somewhere unhelpful. Relax that case one entry at a time as each grows a path.
Verified on this host (Ubuntu 24.04.4, amd64, apt) and by stubbing uname and
os_release for arch, manjaro/arm64, fedora, pop, macos, mingw and riscv64.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
pastilhasandClaude Opus 5
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