First build failed in install: cp -a onto /opt/psi logs 'failed to
preserve ownership ... Permission denied' for every file (chown refused)
and exits non-zero, which tripped the die-guard although the copy itself
was fine. Use cp -r --preserve=mode,timestamps,links instead. Record the
pitfall in the new-module skill guardrails.
The official olex2-linux64.zip already ships both the GUI (olex2) and the
console build (olex2c) plus cctbx and a private CPython 3.8, so nothing is
compiled. Default prep downloads + sha256-verifies the zip (rolling file,
version carries the upstream SVN revision), install copies the vendor tree
flat into PREFIX and adds bin/olex2 + bin/olex2c launchers that reproduce
the vendor start env without running the unirun auto-updater.
duan_j
agosti_j