Precompile issue

[boymaas]

Hello there, was integrating stefon in my project and got this strange error on running precompile:

java.lang.ClassCastException: clojure.lang.PersistentArrayMap cannot be cast to java.lang.CharSequence
at clojure.string$split.invoke(string.clj:222)
at leiningen.stefon_precompile$split_ns.invoke(stefon_precompile.clj:9)
at leiningen.stefon_precompile$stefon_precompile.invoke(stefon_precompile.clj:16)
at clojure.lang.Var.invoke(Var.java:415)
at clojure.lang.AFn.applyToHelper(AFn.java:161)
at clojure.lang.Var.applyTo(Var.java:532)
at clojure.core$apply.invoke(core.clj:619)
at leiningen.core.main$resolve_task$fn__3029.doInvoke(main.clj:189)
at clojure.lang.RestFn.invoke(RestFn.java:410)
at clojure.lang.AFn.applyToHelper(AFn.java:161)
at clojure.lang.RestFn.applyTo(RestFn.java:132)
at clojure.lang.AFunction$1.doInvoke(AFunction.java:29)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invoke(core.clj:619)
at leiningen.core.main$apply_task.invoke(main.clj:230)
at leiningen.core.main$resolve_and_apply.invoke(main.clj:234)
at leiningen.core.main$_main$fn__3092.invoke(main.clj:303)
at leiningen.core.main$_main.doInvoke(main.clj:290)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.lang.Var.invoke(Var.java:415)
at clojure.lang.AFn.applyToHelper(AFn.java:161)
at clojure.lang.Var.applyTo(Var.java:532)
at clojure.core$apply.invoke(core.clj:617)
at clojure.main$main_opt.invoke(main.clj:335)
at clojure.main$main.doInvoke(main.clj:440)
at clojure.lang.RestFn.invoke(RestFn.java:436)
at clojure.lang.Var.invoke(Var.java:423)
at clojure.lang.AFn.applyToHelper(AFn.java:167)
at clojure.lang.Var.applyTo(Var.java:532)
at clojure.main.main(main.java:37)

My settings are as follows:

:stefon-options {
:mode :production
:asset-roots ["resources"]
:serving-root "resources/public/assets"
:manifest-file "resources/manifest.json"
:precompiles ["resources/assets/app.js.stefon"]
}

Tried solving the problem myself by looking at the code, I am seeing a str/split on an namespace on a return on (:stefon-options project). Since I have no experience with lein and their plugin structure I could not figure it out. Maybe I am just doing something wrong. Help would be appreciated! :-)

[pbiggar]

I think the problem is that stefon expects to see a string representing a namespace in project.clj's stefon-options, not a map with options.

If we can make that clearer in the README, would love a PR to that effect!

[boymaas]

Yes, I thought something like that also, but what namespace? If i look at the example project, which is based on an earlier version I just see key, values. I'll try to figure it out, production is still a few months ahead, it will probably be resolved by that time ;-)

[dwwoelfel]

@boymaas it wants you to def your options in a namespace, then provide the namespace-qualified symbol as a string in your project.clj. It looks like this:

myproject/src/stefon.clj:

(ns myproject.stefon)

(def stefon-options
  {:mode :production
   :asset-roots ["resources"]
   ...})

project.clj:

(defproject myproject ...
  ...
  :stefon-options "myproject.stefon/stefon-options"
  ...)

Does that make sense?

[boymaas]

@dwwoelfel yes!! That makes sense! Thank you for the time to explain this :-) Gonna run with it immediatly ...