FWIW, you can get the URL and extract the link with extension from there. Archived packages are always tarballs, so that makes the following possible:
url <- "https://cran.r-project.org/package=httr&version=1.3.0"; library(RCurl) pkgurl <- gsub(".*(https://cran.+\\.tar.gz).*", "\\1", getURL(url)) install.packages(pkgurl, type = "source", repos = NULL) Cheers Joris On Fri, Nov 2, 2018 at 5:42 PM Iñaki Ucar <iu...@fedoraproject.org> wrote: > On Wed, 24 Oct 2018 at 11:40, Kurt Hornik <kurt.hor...@wu.ac.at> wrote: > > > > >>>>> Kurt Wheeler writes: > > > > Try e.g. > > > > https://cran.r-project.org/package=httr&version=1.3.1 > > https://cran.r-project.org/package=httr&version=1.3.0 > > This is a nice feature that I didn't know. I recently proposed > enforcing this scheme in Fedora's packaging guidelines, because in > this way, a SPEC would build correctly even if the package was updated > and the old version was archived (is this guaranteed to continue to > work in future? I assumed so...). > > There is an odd thing about this format though, and that is the > absence of a file extension. This is a redirection, yes, but the > spectool can't trust the filename that is sent by the remote server, > and uses only the filename extracted from the URL. > > Without extension, RPM doesn't know how to unpack the sources. So we > have to do the following similarly odd trick (note the "#"): > > Source0: > https://cran.r-project.org/package=%{packname}&version=%{version}#/%{packname}_%{version}.tar.gz > > Did you consider this problem? Is there any alternate immutable URL > *with* extension? If not, is there any potential issue with the trick > above? > > Regards, > -- > Iñaki Ucar > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > -- 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> ----------- Biowiskundedagen 2017-2018 http://www.biowiskundedagen.ugent.be/ ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
