TOOLS_PLATFORM.install?= /opt/pkg/bin/install-sh
TOOLS_PLATFORM.awk?= /opt/pkg/bin/nawk
TOOLS_PLATFORM.sed?= /opt/pkg/bin/nbsed
TOOLS_PLATFORM.grep?= ${LOCALBASE}/gnu/bin/grep
TOOLS_PLATFORM.fgrep?= ${LOCALBASE}/gnu/bin/fgrep
TOOLS_PLATFORM.egrep?= ${LOCALBASE}/gnu/bin/egrep
TOOLS_PLATFORM.sh?= /bin/bash
TOOLS_PLATFORM.xargs?= #empty
#TOOLS_PLATFORM.find?= #empty
FETCH_USING = curl
FAILOVER_FETCH = YES
(not to mention that I believe pkg_rolling uninstalls the package before rebuild, hence already a problem since I didn't mark findutils to no-delete)
FWIW, I guess I'll go back to the defaults and override on a case by case basis using hacks.mk in all the packages where pkgsrc grep and/or findutils are necessary. More work, but in the end more self-explanatory...
cheers