issue: loading from jar file is not working

project.clj

@@ -24,8 +24,9 @@
                    :resource-paths ["test-resources"]
                    :dependencies []
                    :leiningen/reply
-                   {:dependencies [[org.slf4j/jcl-over-slf4j "1.8.0-beta0"]]
+                   {:dependencies [[org.slf4j/jcl-over-slf4j "1.8.0-beta0"]
+                                   [dda/dummy "0.1.0-SNAPSHOT"]]
                     :exclusions [commons-logging]}}
              :test {:source-paths ["test"]
                     :resource-paths ["test-resources"]
-                    :dependencies []}})
+                    :dependencies [[dda/dummy "0.1.0-SNAPSHOT"]]}})

src/cryogen_core/classpath_able_io.clj

@@ -9,7 +9,8 @@
 (ns cryogen-core.classpath-able-io
   (:require [clojure.java.io :as io]
             [clojure.string :as st]
-            [schema.core :as s]))
+            [schema.core :as s])
+   (:import [java.nio.file FileSystems Paths Files]))
 
 (def SourceType (s/enum :classpath :filesystem))
 
@@ -73,12 +74,12 @@
 
 (s/defn file-from-cp ;  :- File
   [resource-path :- Path]
-  (let [file-from-cp (io/file (io/resource resource-path))]
   (try
+    (let [file-from-cp (io/file (io/resource resource-path))]
       (when (.exists file-from-cp)
-        file-from-cp)
+        file-from-cp))
     (catch Exception e
-        nil))))
+      nil)))
 
 (s/defn file-from-fs ;  :- File
   [fs-prefix :- Prefix

test/cryogen_core/classpath_able_io_test.clj

@@ -19,6 +19,12 @@
 
 (def target "target/tmp")
 
+; TODO: Fix this test!
+(deftest test-file-from-cp
+  (is
+   (sut/file-from-cp
+    "dummy")))
+
 (deftest test-resource-from-cp-or-fs
   (is
    (.exists

test/cryogen_core/classpath_able_io_test.repl

@@ -0,0 +1,21 @@
+TODO: to solve reading from jars:
+ 1. create fs
+
+
+(FileSystems/newFileSystem
+   (java.net.URI.
+    "jar:file:/home/jem/.m2/repository/dda/dummy/0.1.0-SNAPSHOT/dummy-0.1.0-SNAPSHOT.jar")
+  {})
+
+
+ 2. be able to use it
+ 
+(Files/exists
+  (.getPath
+    (FileSystems/getFileSystem
+    (java.net.URI.
+      "jar:file:/home/jem/.m2/repository/dda/dummy/0.1.0-SNAPSHOT/dummy-0.1.0-SNAPSHOT.jar"))
+    "dummy"
+    (into-array String '()))
+    (into-array java.nio.file.LinkOption {}))
+