Re: GHC 7.4.2 on Ubuntu Trusty

2014-10-28 Thread Yitzchak Gale
I wrote: This thread makes it clear what a mess we have inherited from the days when GHC was primarily a research compiler. Let's face it - GHC is now also a serious production compiler, and this urgently needs to be cleaned up. hvr wrote: Are you referring to the GMP dependency or something

Re: GHC 7.4.2 on Ubuntu Trusty

2014-10-28 Thread Edward Z. Yang
Excerpts from Yitzchak Gale's message of 2014-10-28 13:58:08 -0700: How about this: Currently, every GHC source distribution requires no later than its own version of GHC for bootstrapping. Going backwards, that chops up the sequence of GHC versions into tiny incompatible pieces - there is no

Re: Recursion on TypeNats

2014-10-28 Thread Iavor Diatchki
Hello, actually type-level integers are easier to work with than type-level naturals (e.g., one can cancel things by subtracting at will). I agree that ideally we want to have both integers and naturals (probably as separate kinds). I just don't know what notation to use to distinguish the