I would not follow the instructions in RTIGER�s README for installing
Bioconductor packages.
BiocManager::install(�RTIGER�) would install both CRAN and Bioconductor
dependencies of RTIGER, and would be my preferred instruction in a README or
INSTALL file. A complete instruction might be to install your package as if it
were on Bioconductor �
If (!requireNamepace(�BiocManager�, quietly = TRUE))
install.packages(�BiocManager�)
BiocManager::install(�<your package>�)
It does not make sense to me to have instructions in .onAttach / .onLoad or in
each function for the user to install a �Suggests:� package, when actually the
package is required for use and belongs in Imports: or perhaps Depends:.
The instruction to use �version = �3.14�� of Bioconductor in the RTIGER
document is not universally correct, since different Bioconductor versions are
tied to specific R versions (see
https://bioconductor.org/about/release-announcements/ ). On one version of R I
am currently using, I get
> BiocManager::install(version = "3.14")
Error: Bioconductor version '3.14' requires R version '4.1'; use
`BiocManager::install(version = '3.17')` with R version 4.3; see
https://bioconductor.org/install
The instruction to install a vector of Bioconductor packages is also
unnecessary for Bioconductor packages in the Imports: or Depends: field of
<your package>, or if one were to pass the argument `dependencies = TRUE` to
either BiocManager::install() or install.packages() (to get the Suggests:
packages of <your package> to be installed, as well as Depends:, Imports: and
LinkingTo:).
Briefly, installation requires R to know the correct repositories. The command
BiocManager::repositories()
Returns a vector of Bioconductor and CRAN repositories relevant to your version
of R. If one is averse to using BiocManager::install(�RTIGER�), a reasonable
alternative, though still requiring that the BiocManager package is installed,
is
install.packages(�RTIGER�, repos = BiocManager::repositories())
Base R also provides a mechanism for specifying Bioconductor repositories, via
`setRepositories()` called before install.packages(). However, this is not
recommended because, as can be seen on the web page mentioned above, there are
two versions of Bioconductor for each version of R � one always gets the �old�
Bioconductor version, even when a newer version is available.
From: R-package-devel <[email protected]> on behalf of Ivan
Krylov <[email protected]>
Date: Thursday, March 16, 2023 at 2:15 PM
To: Ruff, Sergej <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: [R-pkg-devel] How to declare Bioconductor Dependencies in the
Description File of my R Package
On Thu, 16 Mar 2023 17:01:55 +0000
"Ruff, Sergej" <[email protected]> wrote:
> Last question: How does CRAN work with Bioconductor Dependencies?
> Will CRAN accept limma as a dependency or will my submission be
> rejected?
It's not explicitly spelled out in the CRAN policy
<https://cran.r-project.org/web/packages/policies.html>, but
Bioconductor and CRAN are the "mainstream repositories" for the
purposes of the following rule:
>> Packages on which a CRAN package depends should be available from a
>> mainstream repository
(Even non-mainstream repositories are allowed for optional dependencies
if you follow a few additional rules.)
Here's an example of a CRAN package with a strong dependency on a
Bioconductor package: <https://CRAN.R-project.org/package=RTIGER>. You
can see the extra instructions for installing the Bioconductor
dependencies in its README.
--
Best regards,
Ivan
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