deucalion deps

Checks what Deucalion needs, and installs what is missing. The installer (./install.sh) runs deucalion deps --install first.

$ deucalion deps --help
usage: deucalion deps [-h] [--install] [--veracrypt] [--no-veracrypt] [-y]

check (and install) what Deucalion needs, including VeraCrypt

options:
  -h, --help      show this help message and exit
  --install       install what is missing
  --veracrypt     also install VeraCrypt without asking
  --no-veracrypt  don't install VeraCrypt
  -y, --yes       don't ask for confirmation

$ deucalion deps
What Deucalion needs
  ✓ python3-gi       talking to Ubuntu's disk service and the app
  ✓ gir1.2-gtk-4.0   the app window
  ✓ gir1.2-adw-1     the app's GNOME look
  ✓ udisks2          preparing, unlocking and mounting drives
  ✓ cryptsetup       opening encrypted drives
  ✓ exfatprogs       creating exFAT drives (readable on Linux, macOS and Windows)
  ✓ pkexec           asking for the administrator password
  ✓ dconf-cli        saving desktop settings
  ✓ gnupg            verifying the VeraCrypt download
  ✓ veracrypt        VeraCrypt-encrypted drives (optional)

Option	What it does
(none)	Show what is installed (✓) and what is missing (✗).
--install	Install what is missing with apt (asks first, then for your administrator password), and offer to install VeraCrypt.
--veracrypt	With --install: install VeraCrypt without asking.
--no-veracrypt	With --install: don't install VeraCrypt and don't ask.
-y, --yes	Don't ask before installing packages (and VeraCrypt).

For what each package is for, and how VeraCrypt is downloaded and checked, see Install.

VeraCrypt on a computer without a desktop

VeraCrypt's official package needs the libsm6 library but doesn't say so. Every Ubuntu Desktop has it; a minimal or server installation may not. There, VeraCrypt is reported as installed but fails with "libSM.so.6: cannot open shared object file". Install it with sudo apt install libsm6. See Use Deucalion without a desktop.

Exit codes

Code	Without --install	With --install
0	Everything needed is installed (VeraCrypt doesn't count).	Everything needed is installed now.
1	Something needed is missing.	Still missing: …