mirror of https://github.com/sbt/sbt.git
c7f435026f
The CompileSetup class is being used to detect changes to arguments of incremental compiler that affect result of compilation and trigger recompilation. Examples of such arguments include, the target (output) directory, Scala compiler options, Scala compiler version, etc. By adding `nameHashing` to CompileSetup we have a chance to handle change to that flag smoothly by throwing away old Analysis object and starting with an empty one. That's implemented in AggressiveComile by extending the logic that was responsible for detection of changes to CompileSetup values. Thanks to this change we fix #1081. Analysis formats has been updated to support persisting of newly added value in CompileSetup. We used to not store the value of `nameHashing` flag in persisted Analysis file and infer it from contents of relations but that leads to issue #1071 when empty relations are involved. Given the fact that CompileSetup stores `nameHashing` value now, we can just use it when reading relations and fix #1071. This requires reading/writing compile setup before reading relations. I decided to make that change even if there's a comment saying that reading/writing relations first was done intentionally. |
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