avantgardnerio commented on code in PR #3580:
URL: https://github.com/apache/arrow-datafusion/pull/3580#discussion_r976937931
##########
datafusion/proto/build.rs:
##########
@@ -61,8 +61,9 @@ fn build() -> Result<(), String> {
let json =
std::fs::read_to_string(out.join("datafusion.serde.rs")).unwrap();
let mut file = std::fs::OpenOptions::new()
.write(true)
+ .truncate(true)
Review Comment:
This was key to use just one output file for either feature set and avoid
combinatorial explosions.
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