Problem

The AIPCC-packaged version of kfp 2.15.2 in the RHOAI 3.3 index does not properly declare docstring-parser as a dependency, causing runtime failures when using Elyra's KFP pipeline processor.

Evidence

Upstream kfp 2.15.2 declares docstring-parser as required:

From PyPI kfp 2.15.2 metadata:

"requires_dist": [
  "click>=8.1.8",
  "click-option-group==0.5.7",
  "docstring-parser[1,]=0.7.3",   <-- THIS IS MISSING IN AIPCC
  "google-api-core...",
  ...
]

AIPCC index has docstring-parser available:

$ python scripts/list_aipcc_packages.py --package docstring-parser
h1. Index: CPU (https://console.redhat.com/api/pypi/public-rhai/rhoai/3.3/cpu-ubi9/simple/)
docstring-parser: 0.17.0

The package exists in the index but is not being pulled in by dependency resolution.

Resulting error at runtime:

[E 2026-01-30 16:19:27.584 ElyraApp] Error registering kfp processor 
"elyra.pipeline.kfp.processor_kfp.KfpPipelineProcessor" - No module named 'docstring_parser'

CI failure:

See GitHub Actions run for PR #2879.

Root Cause

The AIPCC-repackaged kfp-2.15.2 wheel likely has modified or missing dependency metadata that does not include docstring-parser in its METADATA or requires.txt file.

Impact

• Elyra KFP pipeline processor fails to load
• Users cannot create Kubeflow pipelines from JupyterLab
• Affects all workbenches using AIPCC 3.3 index

Workaround

Explicitly add docstring-parser to the pyproject.toml dependencies:

dependencies = [
    ...
    "docstring-parser~=0.17.0",  # Workaround for AIPCC kfp missing dependency
    ...
]

Request

Please update the kfp package in AIPCC 3.3 index to properly declare docstring-parser as a required dependency, matching the upstream PyPI package metadata.