The manual describes the GUIX_BUILD_OPTIONS environment variable, that can affect the operation of guix commands that perform builds. But 'guix size' can fail when GUIX_BUILD_OPTIONS is set. E.g.
$ export GUIX_BUILD_OPTIONS='-K --cores=2' $ guix size dillo guix size: error: K: unrecognized option And indeed 'guix size --help' doesn't mention any of the normal build-type options. `~Eric
