Using version 1.0.16 I get the following error in sbt.
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: com.sun..mail#javax.mail;1.6.0: java.text.ParseException: inconsistent module descriptor file found in 'https://repo1.maven.org/maven2/com/sun//mail/javax.mail/1.6.0/javax.mail-1.6.0.pom': bad organisation: expected='com.sun..mail' found='com.sun.mail';
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Unresolved dependencies path:
[warn] com.sun..mail:javax.mail:1.6.0
[warn] +- org.clapper:avsl_2.12:1.0.16 (/Users/alex/git/glass/rules/build.sbt#L28-65)
[warn] +- com.cognotekt:glass-rules_2.12:0.0.3
[error] sbt.librarymanagement.ResolveException: unresolved dependency: com.sun..mail#javax.mail;1.6.0: java.text.ParseException: inconsistent module descriptor file found in 'https://repo1.maven.org/maven2/com/sun//mail/javax.mail/1.6.0/javax.mail-1.6.0.pom': bad organisation: expected='com.sun..mail' found='com.sun.mail';
I guess that this is a result of the above mentioned typo.