haskell - Building trouble with hindent on Debian 8 -


i tried build hindent-4.4.0 on debian 8 ghc-7.6.3 performing cabal install hindent , had following problems :

1. first problem

my build stop errors :

src/descriptive/json.hs:199:33: not in scope: `floatingorinteger' src/descriptive/json.hs:213:39: not in scope: `torealfloat' 

after research, reinstalled scientific-0.3.3.8 lib cabal install scientific (the lib provided debian 8 seems have problem )

after that, build of hindent has continue until the...

2. second problem

i error message :

src/hindent/pretty.hs:88:31:     expecting 1 more argument `ast'     in class declaration `pretty' 

i suspected mismatching module version number , tried install recent version of hindent-4.4.2 manually downloading archive hackage.

i performed standard cabal install leads me ...

3. third problem

cabal rejecting package due incompatible base version :

rejecting: base-4.6.0.1/installed-8aa... (conflict: hindent => base>=4.7 && <5) 

and other versions of hindent seems incompatible base-4.6.

do know how build version of hindent on debian 8?