On Wed, Apr 10, 2013 at 01:01:53PM +0900, Charles Plessy wrote: > -- the version numbers already solve this > > -> At build time, it is not possible to guess what the "lower than" relation > should be, > and therefore the approach with a pseudopackage is more effective. > > -- this was needed three times in ten years > > -> I will be very happy to benefit from the R API pseudopackage in 2016 :) > Time files > really fast !
And I have one little piece of evidence that this will be helpful even during transitions. I am running Debian testing and have hit a breakage. The r-base-* packages have now transitioned to testing (jessie has 3.0.0-2 at the time of writing), and I'm trying to compile a local R package, only to get the following error: ** byte-compile and prepare package for lazy loading Error : package ‘mgcv’ was built before R 3.0.0: please re-install it And sure enough: polya:~ $ rmadison r-cran-mgcv r-cran-mgcv | 1.6-2-1 | squeeze | amd64, armel, i386, ia64, kfreebsd-amd64, kfreebsd-i386, mips, mipsel, powerpc, s390, sparc r-cran-mgcv | 1.7-13-1 | wheezy | amd64, armel, armhf, i386, ia64, kfreebsd-amd64, kfreebsd-i386, mips, mipsel, powerpc, s390, s390x, sparc r-cran-mgcv | 1.7-13-1 | jessie | amd64, armel, armhf, i386, ia64, kfreebsd-amd64, kfreebsd-i386, mips, mipsel, powerpc, s390, s390x, sparc r-cran-mgcv | 1.7-22-1 | sid | ia64 r-cran-mgcv | 1.7-22-2 | sid | kfreebsd-amd64, kfreebsd-i386 r-cran-mgcv | 1.7-23-1 | sid | amd64, armel, armhf, hurd-i386, i386, mips, mipsel, powerpc, s390, s390x, sparc So because of the new version in sid, which didn't wait for the R 3.0.0 migration to testing, the jessie version is still an R 2.7 version :-( Had there been a "Provides: r-api-3.0" in r-base-core and "Depends: r-api-2.7" in r-cran-mgcv, the transition would either have been delayed or knowingly pushed though in spite of this, but the breakage would have been caught at the time. (Then again, this might have been the case anyway.) Julian -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
