The PyPI langflow-nightly is pip-installable again, so the temporary
`if: false` guard added on 2026-05-28 is no longer needed.
#13418 (release-1.10.0) and its forward-port #13419 (main) gave the
extension bundles their own nightly track: langflow-nightly now depends on
lfx-arxiv-nightly / lfx-duckduckgo-nightly / lfx-ibm-nightly, which pin
lfx-nightly==0.5.0.dev* instead of an unsatisfiable stable lfx>=0.5.0,<0.6.0.
Verified against the published dev57 wheels: a dry-run resolve of
langflow-nightly[postgresql] succeeds (549 packages, exit 0), pulling
lfx-nightly==0.5.0.dev57 via the *-nightly bundle variants.
3ff3c576ca