karldw commented on a change in pull request #11001:
URL: https://github.com/apache/arrow/pull/11001#discussion_r696121898
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File path: r/tools/nixlibs.R
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@@ -52,6 +43,21 @@ try_download <- function(from_url, to_file) {
!inherits(status, "try-error") && status == 0
}
+quietly <- !env_is("ARROW_R_DEV", "true") # try_download uses quietly global
+# * download_ok, build_ok: Use prebuilt binary, if found, otherwise try to
build
+# * no download, build_ok: Build with local git checkout, if available, or
+# sources included in r/tools/cpp/. Optional dependencies are not included,
+# and will not be automatically downloaded.
+# https://arrow.apache.org/docs/developers/cpp/building.html#offline-builds
+# * download_ok, no build: Only use prebuilt binary, if found
+# * neither: Get the arrow-without-arrow package
+# Download and build are OK unless you say not to (or can't access github)
+download_ok <- (!env_is("LIBARROW_DOWNLOAD", "false")) &&
try_download("https://github.com";, tempfile())
Review comment:
> CI jobs that test both with and without the
`download_optional_dependencies()` call.
Is the right place for those this file?
https://github.com/ursa-labs/arrow-r-nightly/blob/master/.github/workflows/build-and-test-all.yml
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