In a discussion of twitter it was pointed out that the checksums of packages change after publication on CRAN. One example is the Matrix package version 1.2-12, which was available on CRAN already on nov 17, 2017 but got a different checksum on nov 20, 2017. This caused issues in eg easybuilders.
(see reference here : https://github.com/easybuilders/easybuild-easyconfigs/pull/6118 ) I went through the Matrix SVN repo, and there is no commit whatsoever that adds the last line in the DESCRIPTION file. This line reads: Date/Publication: 2017-11-20 18:57:47 UTC I wondered how this happens, and it looks like CRAN adds this automatically days after the source is available for download. This is suboptimal imho as it would technically mean that you can have two files of the same package version with different checksums. It leads people to believe packages on CRAN can be changed without bumping the version number, and technically that's what it boils down to. Anyone who knows what's going on there? Reference to twitter discussion with Kenneth Hoste about this : https://twitter.com/kehoste/status/990484417721389056 Kind regards Joris -- Joris Meys Statistical consultant Department of Data Analysis and Mathematical Modelling Ghent University Coupure Links 653, B-9000 Gent (Belgium) <https://maps.google.com/?q=Coupure+links+653,%C2%A0B-9000+Gent,%C2%A0Belgium&entry=gmail&source=g> tel: +32 (0)9 264 61 79 ----------- Biowiskundedagen 2017-2018 http://www.biowiskundedagen.ugent.be/ ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php [[alternative HTML version deleted]] ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
