Emmanuel Charpentier wrote: > From Trac#20523 <https://trac.sagemath.org/ticket/20523> : > > Replying to [comment:9 tscrim]: >> I get a failure trying to install this on Cygwin32 with >> {{{ >> checking for lzma_version_number in -llzma... no >> configure: error: "liblzma library and headers are required" >> Error configuring R. >> }}} >> which is the same failure I had on #20190. > > From the R 3.3.0 release notes > <https://cran.r-project.org/doc/manuals/r-release/NEWS.html> : > : > > The previously included versions of zlib, bzip2, xz and PCRE have > been removed, so suitable external (usually system) versions are > required (see the ‘R Installation and Administration’ manual). > > > So it's either : > > * add xz-tools (né lzma-utils) to the list of prerequisites for Sage > (i. e. relying on system's liblzma) ; > * adding xz-tools (at least the lzma library) to sage (cluttering it > with yet one more library to maintain) ; > * or relying on system's R through an interface that remains to be > written... > > > Pick your poison...
Make R optional? (Nothing in Sage depends on it, except for the interface to it, including Rpy2.) xz is already an /optional/ Sage package; we'd also need PCRE (or make it a prerequisite, just for R). (I'd personally make xz standard anyway, and recompress our upstream tarballs with it, probably even dropping bzip2.) In case we made R optional, we could re-include some stuff (such as PCRE) into the "upstream" tarball as well; not sure if we should do so if we keep R standard. My 2ct, -leif -- 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.
