Skipping unnecessary rebuild of snap stages

snapcraft
1

I’ve got a Rust snap that is snapping fine, but is somewhat painful to rebuild, as any change to any file in the repository requires a full recompile. Is there any way to alleviate this? The two things I can think of would be:

  • Some way of telling snapcraft that changes to e.g. /docs/ doesn’t affect the Rust code at all.
    • This would have to be a manual process, since something like build.rs can read arbitrary files at compile time
  • The ability to do an incremental recompile
    • I haven’t really dived into how the Rust plugin works, but I’m surprised this doesn’t happen already, given that snapcraft reuses the VM or container between builds.
2

There have been some improvements for incremental builds when using base: core20, if that’s an option in your case. If so, could you give it a spin and let us know if it’s a friendlier workflow for you?

3

Looks like that worked. Rebuilding after changes is now much faster. Thanks!

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