treat deps.edn git deps as if from .jar

otherwise they are treated as project files and warn more than
they should.

fixes #580

src/main/shadow/build/classpath.clj

@@ -573,10 +573,27 @@
      :file file
      :url (.toURL file)}))
 
+(defn is-gitlib-file? [^File file]
+  (loop [file (.getAbsoluteFile file)]
+    (cond
+      (nil? file)
+      false
+
+      (and (.exists file) (.isDirectory file) (= ".gitlibs" (.getName file)))
+      true
+
+      :else
+      (recur (.getParentFile file)))))
+
+(comment
+  (is-gitlib-file? (io/file "src" "main" "shadow" "build.clj"))
+  (is-gitlib-file? (io/file (System/getProperty "user.home") ".gitlibs" "libs")))
+
 (defn find-fs-resources*
   [cp ^File root]
   (let [root-path (.getCanonicalPath root)
-        root-len (inc (count root-path))]
+        root-len (inc (count root-path))
+        is-gitlib-root? (is-gitlib-file? root)]
     (into []
       (for [^File file (file-seq root)
             :when (and (.isFile file)
@@ -590,7 +607,12 @@
                            (rc/normalize-name))]
             :when (not (should-ignore-resource? cp name))]
 
-        (make-fs-resource file name)
+        (-> (make-fs-resource file name)
+            ;; treat gitlibs as if they were from a .jar
+            ;; affects hot-reload and warnings logic
+            (cond->
+              is-gitlib-root?
+              (assoc :from-jar true)))
         ))))
 
 (defn find-fs-resources [cp ^File root]
@@ -604,6 +626,7 @@
 
     (.isDirectory file)
     (find-fs-resources cp file)
+
     (and (.isFile file) (util/is-jar? (.getName file)))
     (find-jar-resources cp file)
 

src/main/shadow/build/compiler.clj

@@ -463,7 +463,7 @@
 
 (defn do-compile-cljs-resource
   [{:keys [compiler-options] :as state}
-   {:keys [resource-id resource-name url file output-name] :as rc}
+   {:keys [resource-id resource-name from-jar] :as rc}
    source]
   (let [{:keys [warnings static-fns elide-asserts load-tests fn-invoke-direct infer-externs form-size-threshold]}
         compiler-options]
@@ -487,7 +487,7 @@
               (-> ana/*cljs-warnings*
                   (merge warnings)
                   (cond->
-                    (or (and file (= :auto infer-externs))
+                    (or (and (= :auto infer-externs) (not from-jar))
                         (= :all infer-externs))
                     (assoc :infer-warning true)))