Solved with direnv. Also - in my .bashrc in all of my (many) clients:

  $ type uvi uvl uvv
  uvi is a function
  uvi ()
  {
      uv pip install $@
  }
  uvl is a function
  uvl ()
  {
      uv pip list
  }
  uvv is a function
  uvv ()
  {
      uv venv;
      cat > .envrc <<EOF
  source .venv/bin/activate
  EOF

      direnv allow
  }