proton_cefsetup installs the immutable CEF runtime required by a specificProton release and its matching subprocess executable. Runtime installationsare shared by all projects for a user and are selected by platform, archivedigest, and layout version. Subprocess executables are shared by platform andProton version under ~/.proton/subprocesses.
Proton CLI 0.7.0 prepares this installation automatically for dev,build, and package. Use proton_cli setup for optional prewarming from anydirectory. Direct Moon builds still require prior setup.
Install the selected runtime and subprocess executable without the CLI with:
moonx moonbit-community/proton_cefsetup
Subprocess resolution rejects empty files and, on Unix, files without executablepermission. Setup repairs invalid cached executables under the installation lock;these filesystem checks do not validate every possible binary corruption.