Of course, it takes more than these few lines to write a real Paredit,
but still, wouldn’t it be cool?  :-)

What do people (Mike in particular!) think?

Ludo’.

¹ https://www.gnu.org/software/guix/packages/z.html#zile-on-guile

PS: The closure of Zile-on-Guile is 103 MiB, but Zile-on-Guile itself is
    only 400K and its dependencies are already in the installation
    image.