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FAQ and common issues

Which operating systems are supported?

Linux is supported:

  • RHEL9 (on lxplus and HTCondor)
  • Ubuntu LTS on a best-effort basis

Other distributions may be available upon sufficient interest.

aliBuild not using system/CVMFS packages

Use the --always-prefer-system flag on platforms like RHEL9 where aliBuild does not automatically use system packages:

aliBuild build --always-prefer-system FairShip

Git "unsafe directory" warning

Recent versions of Git may refuse to operate in directories owned by other users. If you see this warning, add the directory to the safe list:

git config --global --add safe.directory /cvmfs/ship.cern.ch/24.01/shipdist

This was resolved in aliBuild 1.17.3+.

LHCb environment interference

The lbenv tool can break the SHiP software stack. Configure lbenv to prevent automatic loading. With the right configuration, both LHCb and SHiP software can coexist in the same account.