我正在尝试安装lambdabot。安装一直在步骤74/100终止,并给出了下面的错误。 Constructor `PatBind' should have 4 arguments, but has been= FunBind
[Match locat fname pats Nothing (UnGuardedRhs rhs) (BDecls []
:Source not found.Maybe if you used more than just two fingers...Data.Tree flatten :: Tree aJust try something else.Source not found.lambdabot> src Tree flatten
Source