xargo rebuilds a random subset of dependencies on every build

japaric / xargo

The sysroot manager that lets you build and customize `std`

Apache License 2.0

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xargo rebuilds a random subset of dependencies on every build #127

Closed oli-obk closed 7 years ago

oli-obk commented 7 years ago

This does not happen with cargo. Since it only happens on half the student's computers, and there's no pattern in their setups that can explain the difference, I cannot offer more information. All the students are using nightly-2017-03-28 and are compiling https://github.com/embed-rs/stm32f7-discovery

The moment a single file changes, dependencies are rebuild

Any ideas how to debug this?

japaric commented 7 years ago

Any ideas how to debug this?

Set the env variable RUST_LOG=cargo::ops::cargo_rustc::fingerprint and run the Xargo command. Perhaps compare with other repo where the rebuild doesn't happen: an example from the discovery book or from the f3 crate.

oli-obk commented 7 years ago

We haven't been able to reproduce this anymore. Let's see what happens next April ;)