RISCV-DV not running on RHEL 8. Python files throwing pydantic package error

[rayamsumanth]

Observed Behavior

When running the Makefiles in ${IBEX_ROOT}/dv/uvm/core_ibex, the python package immediately throws an error:

$  make IBEX_CONFIG=opentitan SIMULATOR=vcs ISS=spike ITERATIONS=1 SEED=1 TEST=riscv_arithmetic_basic_test WAVES=0 COV=0

Traceback (most recent call last):
  File "./scripts/metadata.py", line 32, in <module>
    import directed_test_schema
  File "/home/redefine/Workspace/sumanth/ibex/dv/uvm/core_ibex/scripts/directed_test_schema.py", line 37, in <module>
    class DConfig(pydantic.BaseModel):  # noqa
  File "/home/redefine/Workspace/sumanth/ibex/dv/uvm/core_ibex/scripts/directed_test_schema.py", line 65, in DConfig
    @pydantic.field_validator('ld_script', 'includes', mode='before')
AttributeError: module 'pydantic' has no attribute 'field_validator'

• The file path where @pydantic.field_validator() is used: ${IBEX_ROOT}/dv/uvm/core_ibex/scripts/directed_test_schema.py
• Tried to run on Ubuntu with QuestaSim license. Then I am facing this error which is not resolved [here].
• Tried running it on VCS. Had to switch to RHEL as there is no VCS support for Ubuntu. Raised a question regarding this [here]. I am facing this issue since then

Been here for at least a good 15-20 days with no improvements. Kindly help out.

Expected Behavior

The expected behavior is to run the Makefile and generate an output directory for the testcase mentioned

Steps to reproduce the issue

From ${IBEX_ROOT}/dv/uvm/core_ibex, please execute:

 make IBEX_CONFIG=opentitan SIMULATOR=vcs ISS=spike ITERATIONS=1 SEED=1 TEST=riscv_arithmetic_basic_test WAVES=0 COV=0

This is the only command that is run

My Environment

OS = Red Hat Enterprise Linux 8.9
Python version = 3.8.17
Pip version = 19.3.1
RTL Simulator = VCS
Pydantic version = 2.5.2

EDA tool and version:

Synopsys VCS U-2023.03

Operating system:

Red Hat Enterprise Linux 8.9

Version of the Ibex source code:

97c0a72

[rswarbrick]

Hmm, that's not great! I suspect this is a Pydantic versioning problem: they had a backwards-incompatible change that we only switched to using back in August. It might be that you've got the version that we used to require. If that is the problem, I think that pip3 install -U pydantic will get it working.

[rayamsumanth]

I don't know what's weird. The pydantic package was fine. Python version was the issue. Python could not pick up Pydantic 2.5.2 and was defaulting to Pydantic 1.9. After creating a symlink to redirect all my versions to python 3.8 installed directory, the files were taking the correct path. I can close the issue now. In the python_requiements.txt, there may be a need to add a version check >=3.8.

I was able to run basic-arithmetic-test as a sample and it passed the checks.

Thank you for the answer.