Running lein scm-source on OSX fails with exception

[gaberger]

clojure.lang.ArityException: Wrong number of args (4) passed to: string/join
at clojure.lang.AFn.throwArity (AFn.java:429)
clojure.lang.AFn.invoke (AFn.java:44)
clojure.lang.AFn.applyToHelper (AFn.java:165)
clojure.lang.AFn.applyTo (AFn.java:144)
clojure.core$apply.invokeStatic (core.clj:648)
clojure.core$apply.invoke (core.clj:641)
leiningen.scm_source$exec.invokeStatic (scm_source.clj:12)
leiningen.scm_source$exec.doInvoke (scm_source.clj:7)
clojure.lang.RestFn.invoke (RestFn.java:436)
leiningen.scm_source$scm_source.invokeStatic (scm_source.clj:23)
leiningen.scm_source$scm_source.doInvoke (scm_source.clj:20)
clojure.lang.RestFn.invoke (RestFn.java:410)
clojure.lang.Var.invoke (Var.java:379)
clojure.lang.AFn.applyToHelper (AFn.java:154)
clojure.lang.Var.applyTo (Var.java:700)
clojure.core$apply.invokeStatic (core.clj:648)
clojure.core$apply.invoke (core.clj:641)
leiningen.core.main$partial_task$fn__5932.doInvoke (main.clj:272)
clojure.lang.RestFn.invoke (RestFn.java:410)
clojure.lang.AFn.applyToHelper (AFn.java:154)
clojure.lang.RestFn.applyTo (RestFn.java:132)
clojure.lang.AFunction$1.doInvoke (AFunction.java:29)
clojure.lang.RestFn.applyTo (RestFn.java:137)
clojure.core$apply.invokeStatic (core.clj:648)
clojure.core$apply.invoke (core.clj:641)
leiningen.core.main$apply_task.invokeStatic (main.clj:322)
leiningen.core.main$apply_task.invoke (main.clj:308)
leiningen.core.main$resolve_and_apply.invokeStatic (main.clj:328)
leiningen.core.main$resolve_and_apply.invoke (main.clj:324)
leiningen.core.main$_main$fn__5998.invoke (main.clj:401)
leiningen.core.main$_main.invokeStatic (main.clj:394)
leiningen.core.main$_main.doInvoke (main.clj:391)
clojure.lang.RestFn.invoke (RestFn.java:408)
clojure.lang.Var.invoke (Var.java:379)
clojure.lang.AFn.applyToHelper (AFn.java:154)
clojure.lang.Var.applyTo (Var.java:700)
clojure.core$apply.invokeStatic (core.clj:646)
clojure.main$main_opt.invokeStatic (main.clj:314)
clojure.main$main_opt.invoke (main.clj:310)
clojure.main$main.invokeStatic (main.clj:421)
clojure.main$main.doInvoke (main.clj:384)
clojure.lang.RestFn.invoke (RestFn.java:436)
clojure.lang.Var.invoke (Var.java:388)
clojure.lang.AFn.applyToHelper (AFn.java:160)
clojure.lang.Var.applyTo (Var.java:700)
clojure.main.main (main.java:37)

[immoh]

#4 fixes this