--- title: pressure-vessel-unruntime section: 1 ... # NAME pressure-vessel-unruntime - run Steam games in a bubblewrap container # SYNOPSIS **pressure-vessel-unruntime** [*OPTIONS*] [**--**] *COMMAND* [*ARGUMENTS...*] # DESCRIPTION **pressure-vessel-unruntime** escapes from the Steam Runtime to run **pressure-vessel-wrap** with its own bundled libraries. # OPTIONS All options are passed directly to **pressure-vessel-wrap**(1). One option is special: `--batch` : If present, the test-UI will not be run. # ENVIRONMENT `LD_LIBRARY_PATH` : Unset, and passed to **pressure-vessel-wrap** via the `--env-if-host` option so that it will be reinstated if the game is run with the host `/usr`. `LD_PRELOAD` : Unset, and passed to **pressure-vessel-wrap** via the `--env-if-host` option so that it will be reinstated if the game is run with the host `/usr`. Individual items are also passed to **pressure-vessel-wrap** via the **--host-ld-preload** option, so that `LD_PRELOAD` modules can be made available read-only in the container. `PATH` : Reset to a sensible default, and passed to **pressure-vessel-wrap** via the `--env-if-host` option so that it will be reinstated if the game is run with the host `/usr`. `PRESSURE_VESSEL_BATCH` : If set to 1, it is equivalent to `--batch`. `PRESSURE_VESSEL_WRAP_GUI` : If set, and `--batch` is not active, run the **pressure-vessel-test-ui** testing/development user interface instead of running **pressure-vessel-wrap** immediately. `STEAM_RUNTIME` : Unset. `SYSTEM_LD_LIBRARY_PATH` : Used to reset `LD_LIBRARY_PATH` to the value it had on entry to Steam. `SYSTEM_LD_PRELOAD` : Used to reset `LD_PRELOAD` to the value it had on entry to Steam. `SYSTEM_PATH` : Used to reset `PATH` to the value it had on entry to Steam. # SIGNALS The **pressure-vessel-unruntime** process replaces itself with **pressure-vessel-test-ui** or **pressure-vessel-wrap**, so signal handling is the same as for those programs. # EXIT STATUS The same as **pressure-vessel-wrap**, or nonzero for an internal error in **pressure-vessel-unruntime**. # EXAMPLE $ steam steam://install/1070560 # Steam Linux Runtime 'scout' $ steam steam://install/302380 # Floating Point, a small free game $ rm -fr ~/tmp/scout $ mkdir -p ~/tmp/scout $ tar \ -C ~/tmp/scout \ -xzvf ~/.steam/steamapps/common/SteamLinuxRuntime/com.valvesoftware.SteamRuntime.Platform-amd64,i386-scout-runtime.tar.gz In Steam, disable all Steam compatibility tools for Floating Point, and set its launch options to: /path/to/pressure-vessel/bin/pressure-vessel-unruntime \ --runtime ~/tmp/scout/files \ --shell=instead \ -- \ %command% Launching it will launch an `xterm` instead. In the resulting `xterm`(1), you can explore the container interactively, then type `"$@"` to run the game itself. For more joined-up integration with Steam, install the Steam Linux Runtime (`steam://install/1070560`), configure a native Linux game in Steam to be run with the `Steam Linux Runtime` "compatibility tool", and reset the launch options to be empty. <!-- vim:set sw=4 sts=4 et: -->