On Sun, 04 Mar 2012 00:02:57 Michael Orlitzky wrote: > On 03/03/2012 07:50 PM, François Bissey wrote: > > On Sat, 03 Mar 2012 15:50:06 Michael Orlitzky wrote: > >> I think Francois was referring to how easy it is to hack on the > >> dependencies. Right now, you just extract the spkg, modify it, tar it > >> up, and sage -f it. > >> > >> In prefix, you would revbump (-r1) your ebuild, stick a patch in the > >> 'files' directory, edit the ebuild to use the patch, and then re-emerge > >> that package. If you don't like patches, you could also just set SRC_URI > >> to e.g. file:///my-modified-package.tar.bz2 and re-emerge. > > > > No, I was refering to the ability to clone the sage hg repository and > > switch to your own "homebrew" version of sage by running "sage -b". That > > isn't supported right now in Gentoo (although I have idea on how to > > achieve it I haven't done the perspiration yet to make it happen). > > > > The best you can do with sage-on-gentoo is an equivalent of "sage -ba" > > which will rebuild your own install in full . And you cannot switch > > between > > clone of the tree. > > If all of the dependencies were installed as pseudo-system prefix > packages, couldn't you just make a copy of the sage library, and type > 'make' or whatever?
That's a bit more complicated than that. But in essence yes you can. Now do you know how to get your version of the library to be used instead of the system one? Getting a copy and recompiling it is just.... hum..... 2/3 of the story (just so you know I have a fairly good idea about that last bit). > > I guess my question is, if I want to modify some other program on my > system, I extract a copy in ~/src, modify what I want to, and then do > ./configure && make. Why would the sage library be special? I think you are missing the point. Sage has tools to enable you to only rebuild a minimal subset of files - it is disabled in sage-on-gentoo - that enables to test a small change relatively quickly. If I want to do the same with s-o-g I have to rebuild the whole thing. Francois -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
