❯ make -C Doc help
Please use `make <target>' where <target> is one of
  clean      to remove build files
  venv       to create a venv with necessary tools
  html       to make standalone HTML files
  htmlview   to open the index page built by the html target in your browser
  htmllive   to rebuild and reload HTML files in your browser
  htmlhelp   to make HTML files and a HTML help project
  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter
  text       to make plain text files
  texinfo    to make Texinfo file
  epub       to make EPUB files
  changes    to make an overview over all changed/added/deprecated items
  linkcheck  to check all external links for integrity
  coverage   to check documentation coverage for library and C API
  doctest    to run doctests in the documentation
  pydoc-topics  to regenerate the pydoc topics file
  dist       to create a "dist" directory with archived docs for download
  check      to run a check for frequent markup errors

❯ make -C Doc gettext
mkdir -p build
Building NEWS from Misc/NEWS.d with blurb
/Users/hugo/github/python/cpython/main/Doc/build/NEWS is already up to date
PATH=./venv/bin:$PATH sphinx-build -b gettext -d build/doctrees -j auto   -W . build/gettext
Running Sphinx v7.3.7
loading pickled environment... done

Sphinx error:
This environment is incompatible with the selected builder, please choose another doctree directory.
make: *** [build] Error 2