Bug Report

mypy --install-types missing some libraries' type stubs.

To Reproduce

1. A project that imports and uses networkx.
2. mypy --install-types .
3. Does not install type stubs for networkx.

import networkx
graph = networkx.Graph()

Expected Behavior

mypy --install-types . should install types-networkx like it does for many different libraries.

Actual Behavior

Does not

Your Environment

• Python version used: 3.12 (but doesn't work for lower versions as well)
• Mypy version used: Not working for both 1.13, 1.14
• Mypy command-line flags: --install-types .
• Mypy configuration options from mypy.ini (and other config files):

show_error_codes = true
exclude = "tests"
check_untyped_defs = true