how to grep all of hackage!

howto grep hackage.md

first decide where to place your local copy of stuff

cd $YOURPLACE

how to get the most recent version of everything

cabal list --simple | awk '{print ($1)}' | uniq | time xargs -P20 -n1 cabal get

then use grep/ ripgrep or whatever to find where code exists/is used/ is defined

then look at the matches