Move use extendr_engine inside test! macro

[yutannihilation]

Address this concern: #392 (comment)

[Ilia-Kosenkov]

Is this PR ready or wip?

[yutannihilation]

This is ready.

[yutannihilation]

Thanks!

[eitsupi]

Hi, has a version reflecting this change been released yet?
(I'm not sure because there are no tags in this repository.) The following note appears in the package using version 0.3.1 (https://github.com/eitsupi/prqlr/blob/9c8a0330d6e57dd0bb8f4550e1ea159c96b11cca/src/rust/Cargo.toml#L12).

* checking compiled code ... NOTE
File 'prqlr/libs/x64/prqlr.dll':
  Found non-API calls to R: 'R_CStackLimit', 'R_CleanTempDir',
    'R_RunExitFinalizers', 'Rf_initialize_R', 'setup_Rmainloop'

Compiled code should not call non-API entry points in R.

Thanks for working on this!

[yutannihilation]

Not released yet. Sorry for inconvenience. At the moment, you have to use the dev version like my package. Note that I use my branch to test another dev version of libR-sys, but this is not necessary.

c.f. https://github.com/yutannihilation/string2path/blob/6b293f07bf4c0136ace45f7c158dd709163f6099/src/rust/Cargo.toml#L10

I personally consider this is a serious problem that is worth another release, but, since few people here care about CRAN much (and I'm too lazy to explain the details), it's not released yet. Btw, I recently found I have permission on crates.io, so it's possible to release if we agree to release.

[Ilia-Kosenkov]

It is possible it has not been released yet. Can you try building your package targeting github versio on of extendr?

Sorry, did not see there already is an answer when typing from phone.