Get acyclic's tests running after compilation failures, fixing a metadata.mill.json invalidation bug

1 files changed, 5 insertions, 0 deletions

diff --git a/core/src/main/scala/mill/eval/Evaluator.scala b/core/src/main/scala/mill/eval/Evaluator.scala
index 007e1755..db74445c 100644
--- a/core/src/main/scala/mill/eval/Evaluator.scala
+++ b/core/src/main/scala/mill/eval/Evaluator.scala
@@ -115,6 +115,11 @@ class Evaluator(workspacePath: Path,
 
                 write.over(metadataPath, upickle.default.write(inputsHash -> terminalResult, indent = 4))
               case _ =>
+                // Wipe out any cached metadata.mill.json file that exists, so
+                // a following run won't look at the cached metadata file and
+                // assume it's associated with the possibly-borked state of the
+                // destPath after an evaluation failure.
+                rm(metadataPath)
             }