BaseModelica.jl pre-compiling test package is broken

[AnHeuermann]

Issue

The BaseModelica.jl test job is broken: https://libraries.openmodelica.org/branches/basemodelica_jl_master/Modelica_4.1.0/Modelica_4.1.0.html.
Every test has error message

julia --sysimage=/var/lib/jenkins/ws/OpenModelicaLibraryTestingWork/OpenModelicaLibraryTesting/TestBaseModelica.so Modelica.Blocks.Examples.BooleanNetwork1_test.jl
fatal: error thrown and no exception handler available.
InitError(mod=:C, error=ErrorException("no environment in the LOAD_PATH ([\"/home/hudson/saved_omc/libraries/.julia/environments/v1.11/Project.toml\", \"/opt/julia/julia-1.11.6/share/julia/stdlib/v1.11\"]) depends on CondaPkg"))

Julia uses the HOME variable to setup an environment. So this is persistent between different Jobs which is not good.

On our test server there seem to be some incompatibility between the installed Python modules and Python dependencies of BaseModelica.jl:

[ Info: PackageCompiler: Executing /home/andreas/workdir/OM/OpenModelicaLibraryTesting/TestBaseModelica/precompile_skript.jl => /tmp/jl_packagecompiler_VfUSyu/jl_bRRMHD
[ Info: Running CauerLowPassAnalog ...
┌ Error: Failed to initialize ANTLR parser
│   exception = Python: ModuleNotFoundError: No module named 'antlr4'
└ @ BaseModelica ~/.julia/packages/BaseModelica/eRfgs/src/antlr_parser.jl:74
┌ Info: The ANTLR parser requires:
│ 1. Generated parser files (run: cd grammar && ./build_parser.sh)
│ 2. Python dependencies (managed automatically by CondaPkg.jl)
│ 
│ If you're seeing import errors, the Python dependencies should be installed
└ automatically. Try restarting Julia to trigger CondaPkg installation.
┌ Warning: ... failed!
└ @ Main ~/workdir/OM/OpenModelicaLibraryTesting/TestBaseModelica/precompile_skript.jl:30

My best guess is that the CondaPkg installation breaks pre-compiling with PackageCompiler.jl. We could try switching to PrecompileTools.jl.

Adding flag --no-julia-sys-image to the test script could be a quick and dirty solution.

[AnHeuermann]

I got the script running on my local machine by disabling Julia pre-compilation. Now the next issue (besides the overhead for each executable) is that CondaPkg (needed by ANTRL for BaseModelica.jl) breaks our parallelization:

/home/USER/.julia/juliaup/julia-1.11.7+0.x64.linux.gnu/bin/julia MyLibrary.Mechanics.MultiBody.Examples.Pendulum_test.jl
┌ Info: CondaPkg: Waiting for lock to be freed. You may delete this file if no other process is resolving.
└   lock_file = "/home/andreas/.julia/environments/v1.11/.CondaPkg/lock"

[AnHeuermann]

At this point it might be a better idea to re-write all of the BaseModelica.jl tests with a clean Julia script.

[AnHeuermann]

The workaround seems to work:

https://libraries.openmodelica.org/branches/basemodelica_jl_master/Modelica_4.1.0/Modelica_4.1.0.html

Verification isn't working. I guess because the result files are slightly different than what our compare script expects.
But for now I would just ignore it and wait for more models to pass parsing and simulation.