Python integration issue - matlab folders missing from LD_LIBRARY_PATH

[dsuedholt]

Hello,

I'd like to use the MATLAB python engine within a github workflow. However, the following steps fail:

steps:
  - uses: actions/setup-python@v5

  - uses: matlab-actions/setup-matlab@v2

  - run: python -m pip install matlabengine

The MATLAB setup is successful, but installing matlabengine fails with

RuntimeError: MATLAB R2024b installation not found. Install to default location, or add <matlabroot>/bin/glnxa64 to LD_LIBRARY_PATH, where <matlabroot> is the root of a MATLAB R2024b installation.

and an equivalent error on MacOS.

Would it be possible to modify this action to edit LD_LIBRARY_PATH accordingly? Thanks!

[mcafaro]

Hi @dsuedholt,

You can add <matlabroot>/bin/glnxa64 to LD_LIBRARY_PATH by using the matlabroot output and a bash step that sets an environment variable. However, it is currently only possible to use MATLAB Engine on a self-hosted runner with a pre-installed and licensed version of MATLAB. Please see issue #22 for more details.