On 2024-08-28 5:59 p.m., Alexey Sergushichev wrote:
Hi,
Is there any reason why .Rbuildignore is not used before copying package
files in R CMD build?
For some of the packages I develop I have rather large directories with
miscellaneous files for testing and other purposes. They are in my
.Rbuildignore (and .gitignore) file, but that doesn't prevent R CMD build
from trying to copy them on the build process. Having them copied either
breaks the build completely because /tmp directory gets out of space, or
just slows it down a lot. So I wonder if there is a specific reason for
this behavior and whether it could be change or controlled by some
parameter.
There is some discussion in the context of pkgbuild package:
https://github.com/r-lib/pkgbuild/issues/59 It provides a hackish
workaround for that, which also does not work on Windows.
I think the reason is simplicity. The build process can add, delete or
modify files. You wouldn't want that to happen on the original source
files, so R copies the files to a temporary location to run things.
If it applied .Rbuildignore first, then important files for the build
might not be available, and the build could fail.
Having an R package that needs so much data that you can't fit two
copies of it on your disk is a really unusual situation. I think it
will have to be up to you to fix it (by increasing your temp space, or
decreasing the size of some of those files, or something else).
Duncan Murdoch
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