If one download fails, all repeat

[adamhsparks]

Everything was downloading and installing until one hiccuped.

In addition: Warning messages:
1: In utils::download.file(url, save_location, quiet = !verbose) :
  downloaded length 11648970 != reported length 11923364
2: In utils::download.file(url, save_location, quiet = !verbose) :
  URL 'https://mac.R-project.org/bin/darwin20/arm64/icu-71.1-darwin.20-arm64.tar.xz': Timeout of 60 seconds was reached

The installer downloaded everything once again when I restarted the process and the second time it succeeded.

Congratulations!
Xcode CLI, Gfortran, and R developer binaries have been installed successfully.

It's minor, but you might consider, if possible, checking if the process has already been run and if there are already some of these system libs available so that they aren't downloaded again.

[coatless]

Ewk! Thanks for raising this point.

At the moment, I don't have a good solution to address this problem. Principally, we are not logging the packages downloaded through the recipes system. This complicates both restarting downloads and uninstalling the recipe binaries.

This isn't likely to be fixed in the short term as I'll need to think of a good way to store the downloaded packages in a manner similar to how install.packages() work.