optparse-applicative-0.13 stopped exporting (<>) in favour
of Monoid instance and the build now fails as:
Main.hs:305:8: error:
• Variable not in scope: (<>) :: Mod f3 a5 -> Mod f2 a4 -> t1
• Perhaps you meant one of these:
‘<$>’ (imported from Options.Applicative),
‘<*>’ (imported from Options.Applicative),
‘*>’ (imported from Options.Applicative)
optparse-applicative-0.13 stopped exporting (<>) in favour of Monoid instance and the build now fails as:
Signed-off-by: Sergei Trofimovich siarheit@google.com