Hamada S. Badr

FYI. I've tested this successfully with the experimental version RStan. PS: It conflicts with #2641.

@andrjohns After you've merged `develop` in 02b85557330c7d20382038e43ccc0f9d3061c5db, this branch now has the two versions of `eigen` and builds v3.3.9. https://github.com/stan-dev/math/blob/24f3f763b4f05adcaf8cca65b24de6c6bb5da2fa/make/libraries#L12

Would it make sense to respect `pkgType` option (i.e., use `type = getOption("pkgType")`) like in `utils::install.packages()` and `remotes::install_*()`? We could then use something like: ```r options( install.packages.check.source = "no", pkgType...

> Except that if some package does require the newer source version, then it fails. This is not an uncommon situation. True. That's why I install the versioned dependencies with...

> Can you show a GHA job? I've switched to `remotes` for now, but here's the `setup-r-dependencies` step that I was using: ```yaml - name: Set up R dependencies uses:...

> * extra packages from CRAN are best with an `any::` prefix: https://github.com/r-lib/actions/tree/v2-branch/setup-r-dependencies#extra-packages-and-the-any-prefix Yeah, I got an error when I added the `any::` prefix, but maybe b/c I was using...

@gaborcsardi I've followed your suggestions and now I get an error in #358. Here's the GHA run: https://github.com/hsbadr/additive/runs/4828585746

> #358 is hopefully fixed, so your workflow should work now. Ok; thanks! I'll test it and report back.

> #358 is hopefully fixed, so your workflow should work now. Confirmed. Thanks!

Similar crash at https://github.com/hsbadr/HiClimR/runs/4831022375 (`error: R session crashed with exit code -9`): ```r ℹ Creating lockfile '.github/pkg.lock' ✔ Updated metadata database: 2.87 MB in 7 files. ℹ Creating lockfile '.github/pkg.lock'...