[feature request] Hatch Plugin Updates

[juftin]

The tool.hatch.env table has been extremely useful for getting environment plugins installed into hatch's own environment:

[tool.hatch.env]
requires = [
    "hatch-pip-compile"
]

However there are cases where users might want to update plugins for new features / bug fixes and this can be difficult. Personally, I use pipx to install hatch for this reason because it gives me full control of the entire hatch environment:

pipx install --python=$(which python3.12) hatch
pipx inject hatch hatch-pip-compile
pipx runpip hatch install --upgrade hatch-pip-compile

Installing from the binary doesn't support something like this AFAICT. The best way I know how to achieve this would be to temporarily change the tool.hatch.env table and run hatch once:

[tool.hatch.env]
requires = [
    "hatch-pip-compile>=1.11.1"
]

A new CLI command giving users access to hatch's own environment could be very useful for this:

hatch self runpip install --upgrade hatch-pip-compile

or a command that just adds the --upgrade flag to pip install the dependencies listed in tool.hatch.env.requires:

hatch self env install --update

Related to https://github.com/juftin/hatch-pip-compile/issues/77 Related to https://github.com/pypa/hatch/issues/442

[ssiccha]

We have a similar problem with a builder plugin (configured under [build-system]'s requires entry). The only way to upgrade it seems to be to specify the version number explicitly as above.

Is there a way to figure out which environment hatch uses for its plugins? Neither my system installation, nor the virtual environments listed via hatch env show contain the hatch plugins.