#19739: ghc: uses happy during configure -------------------------------------+-------------------------------------- Reporter: ryandesign@… | Owner: gwright@… Type: defect | Status: new Priority: Normal | Milestone: Component: ports | Version: 1.7.1 Keywords: | Port: ghc -------------------------------------+-------------------------------------- Comment(by gale@…): Replying to [ticket:19739 ryandesign@…]:
...There is no way ghc could declare a dependency on happy, since happy declares a dependency on ghc, and circular dependencies are not allowed.
GHC itself is written in Haskell. Every modern version of GHC requires a fairly recent previous version of itself to be already installed in order to compile. So this circularity is inherent to GHC, far beyond the issue with happy. There is a procedure for porting GHC to a new platform, but it is a long and complex procedure that requires significant manual human intervention. It would be nice if the way that MacPorts deals with this issue were documented somewhere. If it already is documented, it would be nice if the port description for ghc would include a link to that page. -- Ticket URL: <http://trac.macports.org/ticket/19739#comment:1> MacPorts <http://www.macports.org/> Ports system for Mac OS