home-assistant: Add error output for missing deps

Print missing dependencies to the console when running the parse
requirements script. This allows to spot missing packages that could be
added to nixpkgs

1 files changed, 9 insertions, 1 deletions

diff --git a/pkgs/servers/home-assistant/parse-requirements.py b/pkgs/servers/home-assistant/parse-requirements.py
index 647e4513de4..96cf1d86050 100755
--- a/pkgs/servers/home-assistant/parse-requirements.py
+++ b/pkgs/servers/home-assistant/parse-requirements.py
@@ -105,7 +105,9 @@ components = parse_components(version=version)
 build_inputs = {}
 for component in sorted(components.keys()):
     attr_paths = []
-    for req in sorted(get_reqs(components, component)):
+    missing_reqs = []
+    reqs = sorted(get_reqs(components, component))
+    for req in reqs:
         # Some requirements are specified by url, e.g. https://example.org/foobar#xyz==1.0.0
         # Therefore, if there's a "#" in the line, only take the part after it
         req = req[req.find('#') + 1:]
@@ -114,8 +116,14 @@ for component in sorted(components.keys()):
         if attr_path is not None:
             # Add attribute path without "python3Packages." prefix
             attr_paths.append(attr_path[len(PKG_SET + '.'):])
+        else:
+            missing_reqs.append(name)
     else:
         build_inputs[component] = attr_paths
+    n_diff = len(reqs) > len(build_inputs[component])
+    if n_diff > 0:
+        print("Component {} is missing {} dependencies".format(component, n_diff))
+        print("missing requirements: {}".format(missing_reqs))
 
 with open(os.path.dirname(sys.argv[0]) + '/component-packages.nix', 'w') as f:
     f.write('# Generated by parse-requirements.py\n')