You are receiving this e-mail because you are listed as the maintainer
of a CRAN/Bioc package with 'Matrix' in its Depends or Imports.
We, the authors of 'Matrix', have detected that your dependency is not
strict enough, because you either (a) depend on a minimum version of
'Matrix' that is too old, or (b) do not specify a minimum even though
one is needed. We recommend that you use at least the following:
Unfortunately, the need for such a change is somewhat subtle and not
detected in CRAN's checks. The main issues are as follows.
Due to the details of your NAMESPACE, your package binaries cache S4
class definitions and/or methods from 'Matrix'. You can find these
cached objects "hidden" in your package namespace, in lists named
.C and .T:, e.g.,
grep("^[.][CT]", names(asNamespace("")), value = TRUE)
If your binary was built against an old version of 'Matrix', then
it is possible for cached classes and methods to differ from the
corresponding ones defined in the latest 'Matrix'.
In the worst case, behaviour seen by two users with identical versions
of your package and identical versions of 'Matrix' can differ depending
on the version of 'Matrix' available when your binary was built.
A sufficiently strict 'Matrix' version requirement avoids these issues.
Hence, going forward, we will notify package maintainers as we update
'Matrix' of potentially "stale" dependencies.
Please let us know if you have further questions, maybe after browsing
the recent R-devel thread on this topic, here:
Hello,
You are receiving this e-mail because you are listed as the maintainer of a CRAN/Bioc package with 'Matrix' in its Depends or Imports.
We, the authors of 'Matrix', have detected that your dependency is not strict enough, because you either (a) depend on a minimum version of 'Matrix' that is too old, or (b) do not specify a minimum even though one is needed. We recommend that you use at least the following:
Unfortunately, the need for such a change is somewhat subtle and not detected in CRAN's checks. The main issues are as follows.
Due to the details of your NAMESPACE, your package binaries cache S4 class definitions and/or methods from 'Matrix'. You can find these cached objects "hidden" in your package namespace, in lists named .C and .T:, e.g.,
If your binary was built against an old version of 'Matrix', then it is possible for cached classes and methods to differ from the corresponding ones defined in the latest 'Matrix'.
In the worst case, behaviour seen by two users with identical versions of your package and identical versions of 'Matrix' can differ depending on the version of 'Matrix' available when your binary was built.
A sufficiently strict 'Matrix' version requirement avoids these issues. Hence, going forward, we will notify package maintainers as we update 'Matrix' of potentially "stale" dependencies.
Please let us know if you have further questions, maybe after browsing the recent R-devel thread on this topic, here:
https://stat.ethz.ch/pipermail/r-devel/2022-September/081971.html
Thank you, Mikael, Martin, and Doug