uv

fb19372a - uv/tests: fix tool_install_home test

uv/tests: fix tool_install_home test This test was, I believe, relying on the XDG_DATA_HOME environment variable not being set. When it is set, as is the case in my environment, `uv tool run` will respect it and install `black` for this particular test into my actual XDG_DATA_HOME directory. We fix this by setting `XDG_DATA_HOME` explicitly.