I ran into a weird problem.
When I build a simple Android project, everything works fine.
But when I add my modules to this project, tgings complicate,
First, because the android activity needs to be compiled with the -P and -T
options in order to run properly, I compile the modules and the activity in
two separate passes: the modules are being compiled without the -P and -T
options (otherwise the interdependent modules can't see each other, ans
compilation results in an error)

But the second stage doesn't always pass - I've found that there are three
modules which -- if I include them in the build, cause the second stage to
terminate with the following error:

Exception in thread "main"
java.lang.reflect.GenericSignatureFormatError: Signature Parse error:
Expected Field Type Signature
	Remaining input: Z>;
	at java.base/sun.reflect.generics.parser.SignatureParser.error(SignatureParser.java:124)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:291)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:277)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeArgument(SignatureParser.java:420)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeArguments(SignatureParser.java:380)
	at java.base/sun.reflect.generics.parser.SignatureParser.parsePackageNameAndSimpleClassTypeSignature(SignatureParser.java:335)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseClassTypeSignature(SignatureParser.java:304)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:283)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseFieldTypeSignature(SignatureParser.java:277)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeSignature(SignatureParser.java:469)
	at java.base/sun.reflect.generics.parser.SignatureParser.parseTypeSig(SignatureParser.java:188)
	at java.base/sun.reflect.generics.repository.FieldRepository.parse(FieldRepository.java:53)
	at java.base/sun.reflect.generics.repository.FieldRepository.parse(FieldRepository.java:42)
	at java.base/sun.reflect.generics.repository.AbstractRepository.<init>(AbstractRepository.java:74)
	at java.base/sun.reflect.generics.repository.FieldRepository.<init>(FieldRepository.java:49)
	at java.base/sun.reflect.generics.repository.FieldRepository.make(FieldRepository.java:66)
	at java.base/java.lang.reflect.Field.getGenericInfo(Field.java:109)
	at java.base/java.lang.reflect.Field.getGenericType(Field.java:276)
	at gnu.bytecode.Field.getType(Field.java:75)
	at gnu.expr.ModuleInfo.setupModuleExp(ModuleInfo.java:197)
	at kawa.standard.require.importDefinitions(require.java:313)
	at kawa.standard.ImportFromLibrary.handleImport(ImportFromLibrary.java:487)
	at kawa.standard.ImportFromLibrary.scanImportSet1(ImportFromLibrary.java:296)
	at kawa.standard.ImportFromLibrary.scanImportSet(ImportFromLibrary.java:264)
	at kawa.standard.ImportFromLibrary.scanForm(ImportFromLibrary.java:97)
	at kawa.lang.Translator.scanForm(Translator.java:1615)
	at kawa.lang.Translator.scanBody(Translator.java:1672)
	at kawa.standard.begin.scanForm(begin.java:23)
	at kawa.lang.Translator.scanForm(Translator.java:1615)
	at gnu.kawa.lispexpr.LispLanguage.parse(LispLanguage.java:117)
	at gnu.expr.Language.parse(Language.java:765)
	at gnu.expr.Language.parse(Language.java:759)
	at gnu.expr.Language.parse(Language.java:753)
	at kawa.repl.compileFiles(repl.java:768)
	at kawa.repl.processArgs(repl.java:451)
	at kawa.repl.main(repl.java:830)


When I use those modules for building or running the desktop client or
the terminal client (the build happens in a single pass), there is no
problem.

How do I even go about debugging this?