karldw commented on code in PR #12973:
URL: https://github.com/apache/arrow/pull/12973#discussion_r861385399
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r/tools/nixlibs.R:
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@@ -435,13 +435,22 @@ turn_off_all_optional_features <- function(env_var_list) {
# Because these are done as environment variables (as opposed to build
flags),
# setting these to "OFF" overrides any previous setting. We don't need to
# check the existing value.
+ # Some features turn on other features (e.g. engine -> substrait ->
protobuf),
+ # So the list of things to turn off is long. See:
+ #
https://github.com/apache/arrow/blob/master/cpp/cmake_modules/ThirdpartyToolchain.cmake#L275
turn_off <- c(
"ARROW_MIMALLOC" = "OFF",
"ARROW_JEMALLOC" = "OFF",
"ARROW_JSON" = "OFF",
"ARROW_PARQUET" = "OFF", # depends on thrift
"ARROW_DATASET" = "OFF", # depends on parquet
"ARROW_S3" = "OFF",
+ "ARROW_GCS" = "OFF",
Review Comment:
If the user has set ARROW_GCS to ON and we've reached this function, the
build is going to fail unless we turn it OFF. But maybe that's better than
turning it off and providing a successful build that doesn't include that
component? Let me know what you think behavior should be here.
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