Opening the packages tab in the sidebar crashes in large virtual environment

[BenCradock]

Describe the bug

I work with some very large repositories with lots of dependencies. In the best case scenario, opening the Packages tab hangs Marimo for a while until the list gets populated. In the worst case, the list doesn't get populated at all and I have to keyboard interrupt Marimo.

Will you submit a PR?

• Yes

Environment

{                                                                                                                                                                                                                                   
  "marimo": "0.16.5",
  "editable": false,
  "location": "<redacted>/.venv/Lib/site-packages/marimo",
  "OS": "Windows",
  "OS Version": "11",
  "Processor": "<redacted>",
  "Python Version": "3.12.8",
  "Locale": "<redacted>",
  "Binaries": {
    "Browser": "--",
    "Node": "--"
  },
  "Dependencies": {
    "click": "8.1.8",
    "docutils": "0.20.1",
    "itsdangerous": "2.2.0",
    "jedi": "0.19.2",
    "markdown": "3.8.2",
    "narwhals": "2.5.0",
    "packaging": "25.0",
    "psutil": "7.0.0",
    "pygments": "2.19.2",
    "pymdown-extensions": "10.16.1",
    "pyyaml": "6.0.2",
    "starlette": "0.46.2",
    "tomlkit": "0.13.3",
    "typing-extensions": "4.14.1",
    "uvicorn": "0.35.0",
    "websockets": "15.0.1"
  },
  "Optional Dependencies": {
    "duckdb": "1.4.0",
    "pandas": "2.3.2",
    "polars": "1.31.0",
    "pyarrow": "20.0.0",
    "loro": "1.8.1",
    "pytest": "8.4.1",
    "ruff": "0.12.9",
    "sqlglot": "27.19.0"
  },
  "Experimental Flags": {}
}

Code to reproduce

No response

[mscolnick]

@BenCradock is it crashing your browser or terminal/computer? what package manager are you using?