Since Double Commander doesn't have a Flatpak on Flathub, there are two main options for installing it on Bluefin:

Option 1: Use the Arch Toolbox (closest to your Arch setup)#

Bluefin ships with an Arch Distrobox that includes paru, giving you full AUR access. Spin up an Arch Distrobox and install Double Commander:

distrobox create --image ghcr.io/ublue-os/arch-toolbox:latest --name arch
distrobox enter arch
paru -S doublecmd-qt5

Then export the app to your host menu so it integrates into the GNOME app launcher:

distrobox-export --app doublecmd

This is the recommended approach for apps not available as Flatpaks — it keeps the host system clean while providing access to any package from traditional distro repos.

Option 2: Use a Flatpak Alternative#

If you're open to alternatives, consider dual-pane file managers available on Flathub:

• Krusader: flatpak install flathub org.kde.krusader2
• GNOME Commander: flatpak install flathub org.gnome.GnomeCommander