I did a full reread and corrections. Phew!

It was getting quite unwieldy, with
cowbuilder/pbuilder/sbuild/schroot/qemu instructions all over the
place. Now we clearly outline the schroot/qemu instructions
separately, and we've taken the VM disgression out into the blog post.

I never use it, and the one time i had to (it's found by the polybar
package build), i realized it didn't actually worked.

The procedure was written for cowpoke. That relies on cowbuilder which
we is a secondary option. With sbuild, there's no
sbuild-specific *thing* to do remote builds, but after looking at how
cowpoke works, it is simple enough to reproduce what it does with
simple commands (yay dcmd).

I found about dcmd after looking at the cowpoke source code.

This means one less command to learn, because you *need*
dpkg-buildpackage -S to perform source-only uploads, while dpkg-source
-b only builds a source package. The latter is useful to build stuff,
but that's it, so we drop that.

vagrant is good enough for our needs