Backport "Actively remove Scala 2 pickles and emit synthetic TASTy attribute for copied stdlib .class files" to 3.8.0#24911

Merged

WojciechMazur merged 14 commits intorelease-3.8.0from

release-3.8.0_backport-24846

Jan 7, 2026

Commits on Jan 7, 2026

fix bytecode attributes for patched files

hamzaremmal
authored and
WojciechMazur
committed
Add validation to ensure Scala 2 pickles are not stored
WojciechMazur
committed
Rename unpickler to removeScala2Pickles
WojciechMazur
committed
Add validation for existance of TASTy attribute. Add synthetic TASTY attribute for copied .class files
WojciechMazur
committed
Fix sjs builds - use fixed scala-library-nonboostrapped source directory
WojciechMazur
committed
Remove dependency on scala-library-nonbootstraped project - detect .class files produced by javac based on the source attributes
WojciechMazur
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Ensure that Scala 2 pickle attributes are also removed
WojciechMazur
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Remove `TastyAttributeReader` replace with inline reader using prototypes
WojciechMazur
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Add assertion to ensure that no new TASTy attributes are generated or removed that would be missing in unpatched sources compiled using Scala 3
WojciechMazur
committed
Validate existance of 'Scala' attribute in all .scala outputputs. Patch specialized classes to add missing attribute (Scala 2 compiler bug?)
WojciechMazur
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Ignore AnyVal.class not having .tasty corresponding class
WojciechMazur
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Allow to skip scala/AnyVal.tasty on nonbootstrapped but not on bootstrapped
WojciechMazur
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Disable non-boostrapped sbt-bridge tests - works on bootstrap, fails probably due to missing AnyVal.tasty
WojciechMazur
committed
Fix path check on Windows
WojciechMazur
committed