Jeroen Demeyer: > On 2016-10-18 17:52, Ximin Luo wrote: >> (2) In the long run, one can think about splitting out sage.rings.integers >> (and related things) into a small library "sage-types" or something like >> that. Then sagelib and fpylll can depend on this, and there would be no >> circular dependency, even when Debian or other distros try to build it. > > I do not understand how that would help you. I am proposing a solution > > (A) Split the Sage package in 2 packages (Sage-the-library + > Sage-the-distribution) > > and you have various reasons why this doesn't work. Instead you propose > > (B) Split the Sage package in 2 packages (sage.rings.integers (and related > things) + the rest) > > To me, (A) and (B) look very similar. Why would (B) work while (A) does not? > In other words, why are the problems that you mention for (A) not applicable > to (B)? >
It's a fair observation but there are important differences. In (A), the majority of the code exists in the dependency (sagelib). However the tests for this huge body of code, exist in the dependant. This causes the huge write-run-fix loop. And this is not really what a dependency system is "supposed" to be used for, we don't have similar situations like this anywhere else. In (B), the sage-types library is supposed to be a minimal library with a stable API that doesn't change too often. The write-run-fix loop is greater, but it doesn't get invoked nearly as often. This would automatically be true just because the code base is smaller, but you could also put some extra effort into making it very very stable. Furthermore, this pattern is very common. If we have a huge project and it develops a utility that is useful to other smaller projects, it often gets split out. For example we have the NSPR library from Mozilla which Firefox depends on, GObject from GNOME, etc. Smaller projects that want to play with Sage integers, might not want to depend on *all* of sagelib - it slows down testing. Possibly some of these people would have sage installed already - but some of them might not want to do this, or not want to install a whole development version of sage. X -- GPG: ed25519/56034877E1F87C35 GPG: rsa4096/1318EFAC5FBBDBCE https://github.com/infinity0/pubkeys.git -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
