I am building ghc from source. The building page http://hackage.haskell.org/trac/ghc/wiki/Building/Using#Sourcetreesandbuildt... mentions lndir for separating source trees from build trees. Given how much detail is generally given for individual commands eg http://hackage.haskell.org/trac/ghc/wiki/Building/GettingTheSources maybe it would be nice to have a (typical?) lndir command also given? Also there is a mention about using a local git clone here http://hackage.haskell.org/trac/ghc/wiki/Building/GettingTheSources Arent these two alternative ways with similar intent - viz. keeping source pristine and separating build 'messiness'? Or do people use both git (local) clone + lndir? If so why? Rusi [ghc noob here: Please tell me if this is the wrong list to ask this kind of question :-) ]