Explain that you need to download some image from websites

devices/qemu/arista-veos.json

@@ -0,0 +1,37 @@
+{
+    "name": "Arista vEOS",
+    "category": "router", 
+    "emulator": "qemu", 
+    "vendor_name": "Arista", 
+    "vendor_url": "http://www.arista.com/", 
+    "documentation_url": "http://www.arista.com/docs/Manuals/ConfigGuide.pdf", 
+    "product_name": "Arista vEOS",
+    "product_url": "https://eos.arista.com/", 
+    "repository_version": 1, 
+    "status": "stable",
+    "maintainer": "GNS3 Team",
+    "maintainer_email": "developers@gns3.net",
+ 
+    "adapter_type": "e1000",
+    "adapters": 8,
+    "hda_disk_image": [
+        {
+            "filename": "Aboot-veos-2.1.0.iso",
+            "version": "2.1.0",
+            "sha1sum": "ea9dc1989764fc6db1d388b061340743016214a7",
+            "download_url": "https://www.arista.com/en/support/software-download"     
+        }
+    ],
+    "hdb_disk_image": [
+        {
+            "filename": "vEOS-lab-4.13.8M.vmdk",
+            "version": "4.13.8M",
+            "sha1sum": "5f42d71b30bc682e44ccf7340e20ea7ea8967ef5",
+            "download_url": "https://www.arista.com/en/support/software-download"    
+        }
+    ],
+    "options": "-nographics",
+    "kvm_support": true,
+    "ram": 2048,
+    "processor": "x64"
+}

devices/qemu/microcore-linux.json

@@ -10,7 +10,7 @@
     "repository_version": 1, 
     "status": "stable",
     "maintainer": "GNS3 Team",
-    "maintainer_email": "dev@gns3.net",
+    "maintainer_email": "developers@gns3.net",
  
     "adapter_type": "e1000",
     "adapters": 1,

gns3registry/main.py

@@ -77,7 +77,8 @@ if __name__ == "__main__":
                 print(" * {} {}: {}".format(file["version"], file["filename"], file["sha1sum"]))
     elif args.install:
         image = registry.download_image(args.install, config.images_dir)
-        add_image(image)
+        if image:
+            add_image(image)
     else:
         parser.print_help()
         sys.exit(1)

gns3registry/registry.py

@@ -51,10 +51,14 @@ class Registry:
                  if file["sha1sum"] == sha1sum:
                     path = os.path.join(images_dir, file["filename"])
 
-                    print("Download {} to {}".format(file["direct_download_url"], path))
-                    #TODO: Skip download if file already exist with same sha1
-                    urllib.request.urlretrieve(file["direct_download_url"], path)
-                    return path
+                    if "direct_download_url" in file:
+                        print("Download {} to {}".format(file["direct_download_url"], path))
+                        #TODO: Skip download if file already exist with same sha1
+                        urllib.request.urlretrieve(file["direct_download_url"], path)
+                        return path
+                    else:
+                        print("You need to download by hand the image {filename} from:\n{download_url}\n\nAnd run: ./bin/gns3-get --add {filename}".format(filename=file["filename"], download_url=file["download_url"]))
+                        return None
 
     def search_device(self, query):
         results = []