Recently, I have had problem with my basic R-CMD-check on GitHub Actions for my R-package. The compilation of the C++ code in my package fails with an error message I don't quite get. It seems to have to do with fortran packages not being found.
See the full check log here:
The package runs perfectly fine on R-hub through:
devtools::check_rhub(platforms = "macos-highsierra-release-cran")
Is something wrong on the Github actions end? I tried changing the cache key to rerun without cached R-packages, but the same error turns up.