Difference between revisions of "R package guidelines"

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{{Package guidelines}}

Revision as of 15:50, 21 July 2018

Package creation guidelines

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This document covers standards and guidelines on writing PKGBUILDs for R packages. Most information can be obtained by looking at the package's DESCRIPTION file. You can get most of this from inside R by running tools::CRAN_package_db().

Package naming

Packages should be named r-pkgname, where pkgname is taken from the Package field from the DESCRIPTION file. The package name should be lowercase.

Package Version

Take it from the Version field. R allows packages to have colons and hyphens in their version, this is disallowed in PKGBUILDs. Convert these to a period or underscore.

Arch

See PKGBUILD#arch. If the package's CRAN webpage has NeedsCompilation: yes it is likely architecture-specific. Otherwise, it is likely not.

Dependencies

R packages listed in Depends, Imports, or the LinkingTo fields in a package's DESCRIPTION file should be listed under depends.

R packages listed in Suggests should be listed as optdepends.

Some packages require external tools, these are listed under SystemRequirements.

gcc-fortran is needed as a makedepends for some packages but is not always listed in the DESCRIPTION file.

Source

All R packages available on CRAN are available at the website https://cran.r-project.org/src/contrib/cranname_cranversion.tar.gz where cranname is the name of the package on CRAN and cranversion the cran version.

Build and Package

R has built-in support for building packages, we just need to install and copy over the built package afterwards:

 build(){
     R CMD INSTALL pkg.tar.gz -l "$srcdir"
 }
 package() {
     install -dm0775 "$pkgdir"/usr/lib/R/library
     cp -a --no-preserve=ownership pkgname "$pkgdir"/usr/lib/R/library
 }

Examples

RcppEigen

 pkgname=r-rcppeigen
 pkgver=0.3.3.4.0
 pkgrel=1
 pkgdesc="Rcpp Integration for the Eigen Templated Linear Algebra Library"
 arch=('x86_64')
 url="https://cran.r-project.org/package=RcppEigen"
 license=('GPL')
 depends=('r' 'r-rcpp')
 optdepends=('r-inline' 'r-runit' 'r-pkgkitten')
 source=("https://cran.r-project.org/src/contrib/RcppEigen_$pkgver.tar.gz")
 md5sums=('78ee1ef7c6043efa875434ae5fcea2ec')
 
 build(){
     R CMD INSTALL RcppEigen_"$pkgver".tar.gz -l "$srcdir"
 }
 package() {
     install -dm0755 "$pkgdir"/usr/lib/R/library
     cp -a --no-preserve=ownership RcppEigen "$pkgdir"/usr/lib/R/library
 }

XML

An example where the R package has characters not allowed in pkgver:

 _cranver=3.98-1.11
 pkgname=r-xml
 pkgver=${_cranver//[:-]/.}
 pkgrel=1
 pkgdesc='Tools for Parsing and Generating XML Within R and S-Plus'
 arch=('x86_64')
 url='https://cran.r-project.org/package=XML'
 license=('BSD')
 depends=('r' 'libxml2')
 optdepends=('r-bitops' 'r-rcurl')
 replaces=('r-cran-xml')
 source=("https://cran.r-project.org/src/contrib/XML_$_cranver.tar.gz")
 md5sums=('6c67f5730ada3456372520773a920b8e')
 
 build(){
     R CMD INSTALL XML_"$_cranver".tar.gz -l "$srcdir"
 }
 package() {
     install -dm0755 "$pkgdir"/usr/lib/R/library
     cp -a --no-preserve=ownership XML "$pkgdir"/usr/lib/R/library
 }