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When a file referenced by a task's inputs/outputs (e.g. `Compile / resources +=
file("nope.txt")`) does not exist, hashing the task's cache key threw a
NoSuchFileException deep inside sjsonnew serialization. It surfaced as an opaque
sjsonnew.SerializationException that dumped the entire input list, with the real
cause buried several `Caused by:` levels down, so users routinely mistook it for
a corrupt cache and reached for `clean`.
ActionCache.mkInput now catches the hashing failure, detects a NoSuchFileException
anywhere in the cause chain (ActionCache.findMissingFile), and throws a
MessageOnlyException naming the file:
[error] file referenced by the build does not exist: nope.txt
util-cache gains a dependency on util-control (a leaf module, no cycle) for
MessageOnlyException.
Fixes #9217.
Co-authored-by: Brian Hotopp <[email protected]>
Co-authored-by: Claude Opus 4.8 (1M context) <[email protected]>
18 lines
656 B
Markdown
18 lines
656 B
Markdown
### Clearer error when a referenced file does not exist
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If a file added to a task's inputs/outputs (e.g. `Compile / resources += file("nope.txt")`)
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does not exist, tasks such as `package` previously failed while hashing the task's cache
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key with an opaque `sjsonnew.SerializationException` that dumped the entire input list, with
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the real cause (`NoSuchFileException`) buried several `Caused by:` levels down. This was
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routinely mistaken for a corrupt cache.
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sbt now reports the missing file directly:
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```
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[error] file referenced by the build does not exist: nope.txt
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```
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This addresses [#9217][i9217].
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[i9217]: https://github.com/sbt/sbt/issues/9217
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