I can very precisely answer the question as one of Luna designers. Luna's textual syntax is strongly influenced by Python and Ruby, because we think that it is one of the most widely understandable and easy to use syntax out there at the moment - just like wantreprenr007 said.
The concepts in Luna were influenced mainly by Haskell, Idris, Erlang and other functional languages.
The concepts in Luna were influenced mainly by Haskell, Idris, Erlang and other functional languages.