Log message:
all: replace SUBST_SED with the simpler SUBST_VARS

pkglint -Wall -r --only "substitution command" -F

With manual review and indentation fixes since pkglint doesn't get that
part correct in every case.

Log message:
devel/py-jupyter_core: Add ${PREFIX} to Jupyter's system prefixes

This enables Jupyter to discover kernels installed by pkgsrc packages
other than py-ipykernel.

Bump PKGREVISION.

Log message:
py-jupyter_core: updated to 4.4.0

4.4.0:
- ``jupyter troubleshoot`` gets the list of packages from the Python environment
  it's in, by using ``sys.executable`` to call ``pip list``.
- Added utility function ``ensure_dir_exists``, and switched to using it over
  the one from ipython_genutils, which does permissions wrong.
- Avoid creating the ``~/.ipython`` directory when checking if it exists for
  config migration.
- Fix mistaken description in zsh completions.
- Fix subcommand tests on Windows.
- The README now describes how to work on ``jupyter_core`` and build the docs
- Fix a broken link to a release in the docs

Log message:
Add py-jupyter_core 4.3.0

Jupyter core package. A base package on which Jupyter projects rely.