You want Clojure to treat 'env' as a Map instead of its implementation class, which is not public. Just add the type hint #^Map to 'env''s def:
user=> (def pb (new ProcessBuilder ["myCommand" "myArg"])) #'user/pb user=> (def #^Map env (.environment pb)) #'user/env user=> (.put env "VAR1", "myValue") "myValue" -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en To unsubscribe from this group, send email to clojure+unsubscribegooglegroups.com or reply to this email with the words "REMOVE ME" as the subject.