Hi, 2009/4/14 bradford cross <bradford.n.cr...@gmail.com>
> > > On Mon, Apr 13, 2009 at 2:31 PM, Stephen C. Gilardi <squee...@mac.com>wrote: > >> On Apr 13, 2009, at 4:58 PM, bradford cross wrote: >>> >>> I have written up my journeys so far: >>> http://bradfordcross.blogspot.com/2009/04/clojure-build-and-dependency-management.html >>> >> >> Thanks very much for the write-up! >> >> Given the recent discussions and interest in dependency management I >> thought I'd mention an idea in that area that I think is a good one. >> >> At ILC '09, Francois-Rene Rideau made a presentation about "xcvb": >> >> http://common-lisp.net/project/xcvb/ >> >> which is intended to be a successor to Common Lisp's ASDF with some nice >> features. >> >> One of the issues it addresses is the possibly problematic behavior of a >> "same world" compiler as we have in Clojure AOT: build dependencies which >> are intended to be explicit and correct can be incorrect, but accidentally >> work. >> >> Here's an example: >> >> A depends on B and C >> E depends on A, B, and D, but only declares A and D >> >> Compile A >> Compile E >> >> works >> >> Now change A so it no longer depends on B. >> >> Now compiling E "breaks". (And in the general case, the guy who >> made the change to A knows nothing about E.) > > > Yes, I have had nasty issues with this in the past. IMO, explicitly > declaring deps and not relying on transitive resolution is the only way to > go. > I don't understand, the example given by Stuart does not rely on any transitive resolution mechanism, but rather plain explicit dependency declaration. So I think that transitive resolution is not the problem here. The problem is that the compilation of A had a side effect left that the compilation of E benefited from. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
