Build Warnings on Windows and Ubuntu-latest Due to R Version and .drectve Issues

[jibarozzo]

Description:

We had recent build warnings for the multiverse package and identified potential causes affecting both Windows and Ubuntu builds.

Windows (windows-latest, oldrel4):

• R Version: Logs indicate that R 4.0.5 is being used instead of the specified version.
• Warning: Encountering a warning related to a corrupt .drectve file during the R CMD check process.

Ubuntu (ubuntu-latest, devel):

• Build Failure: The test is failing, which might be related to the recent rollout of Ubuntu 24.04 and compatibility issues with the R version used.

Proposed Solution:

Switch Ubuntu Runner Version: Temporarily change the GitHub Actions workflow YAML to use runs-on: ubuntu-22.04 instead of ubuntu-latest. This is a viable short-term fix since Ubuntu 22.04 will continue to be maintained for the next two years.

Next Steps:

• Merge Current Changes: Changes from PR Default scaffolding with savvy::savvy_init(). #7 were merged. This is were the issue started..
• Track Issue

Additional Notes:

Artifact Access: Build artifacts and detailed logs are available for further analysis here.
Long-Term Fix: Plan to explore the root causes related to the R version discrepancies and the .drectve file corruption to implement a permanent solution.

[jdhoffa]

Windows (windows-latest, oldrel4):

Warning: Encountering a warning related to a corrupt .drectve file during the R CMD check process.

I would probably begin by investigating this file:
https://github.com/r-staceans/multiverse/blob/main/src/Makevars.win.in

[jdhoffa]

Specifically this line of the Makevars.win.in file:
https://github.com/r-staceans/multiverse/blob/35a06129e53c814544048f81f59ffe8a2c028e54/src/Makevars.win.in#L15

resonates a little bit with this open StackOverflow question:
https://stackoverflow.com/questions/25161814/warning-corrupt-drectve-at-end-of-def-file