clojure.core/proxy does not work when one reloads namespace containing defprotocol.
E.g. one can't reload the following file without triggering an error:
`
(ns foo.baz)
(defprotocol Hello
(hello [this]))
(def hello-proxy
(proxy [foo.baz.Hello] []
(hello []
(println "hello world"))))
(hello hello-proxy)
`
Saving the above as foo/baz.clj, I get the following error:
$ rlwrap java -cp target/clojure-1.8.0-master-SNAPSHOT.jar:. clojure.main
Clojure 1.8.0-master-SNAPSHOT
user=> (require 'foo.baz :reload)
hello world
nil
user=> (require 'foo.baz :reload)
CompilerException java.lang.IllegalArgumentException: No implementation of method: :hello of protocol: #'foo.baz/Hello found for class: foo.baz.proxy$java.lang.Object$Hello$6f95b989, compiling:(foo/baz.clj:11:1)
I'm using the current git master (commit 5cfe5111ccb5afec4f9c73), but clojure 1.7 has the same problem.
The problem is that proxy-name only uses the interface names as a key. These names do not change when reloading the namespace, but the interfaces themself are new.
I'm going to attach a short patch which fixes that issue for me.
