cabal2ebuild

make gentoo's .ebuild file from .cabal file.

% ls
hoge.cabal ...
% cabal2ebuild
% ls
hoge.cabal hoge-0.1.2.3.ebuild ...

% hackage2ebuild cabal2ebuild 0.0.15.8 -d ebuilds
% ls ebuilds
cabal2ebuild-0.0.15.8.ebuild