[R-pkg-devel] 'rlang' win-builder error for package without rlang dependency

[Konrad Rudolph]

Hi,

My recent CRAN package submission failed with a win-builder error during
the tests and vignette building *of the previously submitted version* [1]:

```
    Error in library.dynam(lib, package, package.lib) :
      DLL 'rlang' not found: maybe not installed for this architecture?
```

(The log also shows another testing error with the new version which I can
make neither heads nor tails of, but that’s a separate issue.)

My package does not directly depend on 'rlang' (though it is a transitive
'Suggests' (build time) dependency via 'testthat'). I’m at a loss how to
fix this issue. The closest I could find was [2], where the error is caused
by tests being run for a mismatching architecture. In my case, the error
seems to be caused by 'testthat' not being able to load the rlang DLL for
x64 (weirdly the tests run to completion for the [mismatching] i386
architecture). Given that I don’t control (a) which architecture is tested
on win-builder, nor (b) how 'testthat' loads its dependencies, how can I
fix this?

… or was this error included in the win-builder output of the new
submission as a simple FYI and can be safely ignored?

[1]
https://win-builder.r-project.org/incoming_pretest/box_1.0.3_20210912_125241/Debian/00check.log
[2] https://github.com/r-hub/rhub/issues/476

--
Konrad Rudolph // @klmr

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