T16180 broken in ghci way
--- /dev/null 2019-04-04 18:56:29.121560266 +0000
+++ th/T16180.run/T16180.run.stderr.normalised 2019-04-04 20:23:07.716605549 +0000
@@ -0,0 +1,13 @@
+ghc: ^^ Could not load 'mydata', dependency unresolved. See top entry above.
+
+
+ByteCodeLink: can't find label
+During interactive linking, GHCi couldn't find the following symbol:
+ mydata
+This may be due to you not asking GHCi to load extra object files,
+archives or DLLs needed by your current session. Restart GHCi, specifying
+the missing library using the -L/path/to/object/dir and -lmissinglibname
+flags, or simply by naming the relevant files on the GHCi command line.
+Alternatively, this link failure might indicate a bug in GHCi.
+If you suspect the latter, please send a bug report to:
+ glasgow-haskell-bugs@haskell.org
*** unexpected failure for T16180(ghci)