Support for immutable/atomic Linux distros (Fedora Silverblue, Bazzite, etc.)

[blak0p]

Problem

Gentleman.Dots doesn't work on immutable/atomic Linux distros (Fedora Silverblue, Bazzite, uBlue, etc.) because these systems:

• Have a read-only root filesystem (ostree) — can't sudo dnf install or write to /usr/local/
• Require rpm-ostree layering (with reboot) for system packages
• Use flatpak for GUI apps instead of dnf/apt
• Homebrew works (in userspace) but isn't the primary package manager on these systems

What the installer currently does that fails

1. sudo dnf install / sudo apt install — blocked by immutable root
2. Writing to /usr/local/ or /opt/ — blocked
3. Assuming Homebrew is available as the main package source (it works but needs different paths)
4. No detection of rpm-ostree based systems

What would work

The config files themselves (.zshrc, .config/ghostty/, .config/nvim/, etc.) work perfectly on atomic systems — they live in $HOME. The block is only system package installation.

Suggested approach

1. Detect atomic distros: check for rpm-ostree binary or /etc/os-release containing silverblue/bazzite/fedora-silverblue
2. Add an "atomic mode" (auto-detected or manual flag --atomic):
   • Skip all sudo package installation
   • Only copy config files to $HOME
   • Print a summary of packages the user should install manually via rpm-ostree install / flatpak
3. Homebrew detection: Bazzite users can have brew at /home/linuxbrew/.linuxbrew/ — respect that for tools that can be brew-installed
4. Flatpak fallback: for GUI apps like Ghostty, Kitty — offer flatpak installation (flatpak install)

Affected distros (non-exhaustive)

• Fedora Silverblue / Kinoite
• Bazzite (gaming-focused uBlue)
• Fedora IoT
• Vanilla OS
• OpenSUSE MicroOS / Aeon
• Endless OS