lldb --python-path prints the worng path

[Lawrence D'Anna]

lldb --python-path prints the wrong path.

It prints /usr/lib/lib/python3/dist-packages, but it should be

/usr/lib/python3/dist-package
or perhaps
/usr/lib/llvm-13/lib/python3/dist-packages/

This is because debian packaging scripts built it with

-DCMAKE_INSTALL_PREFIX=/usr/lib/llvm-13

So lldb expects that liblldb will be installed at /usr/lib/llvm-13/lib/liblldb.so.1
but this has been moved to /lib/x86_64-linux-gnu/liblldb-13.so.1 and replaced with a symlink.

The way lldb finds its python path is essentially
$(dirname $(dirname $path_to_liblldb))/lib/python3/dist-packages

see: ScriptInterpreterPython::ComputePythonDir, ScriptInterpreterPython::GetPythonDir
https://github.com/llvm/llvm-project/blob/7c5ecc8b7e1bcd1b02eafeba9bbf3d5bc50d72c5/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp#L394

ProblemType: Bug
DistroRelease: Ubuntu 21.10
Package: lldb-13 1:13.0.0-2
ProcVersionSignature: Ubuntu 5.13.0-21.21-generic 5.13.18
Uname: Linux 5.13.0-21-generic x86_64
ApportVersion: 2.20.11-0ubuntu71
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Thu Nov 18 14:43:08 2021
InstallationDate: Installed on 2017-04-13 (1680 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
SourcePackage: llvm-toolchain-13
UpgradeStatus: Upgraded to impish on 2021-11-09 (9 days ago)

[Sylvestre Ledru (sylvestre)]

don't hesitate to provide patch for this. I am not sure I will have time to work on it soon.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.