review callback: Set labels, render list of failed checks in reporter

buildbot_nix/__init__.py

@@ -608,20 +608,64 @@ def gerritReviewCB(builderName, build, result, master, arg):
     if builderName != 'lix/nix-eval':
         return dict()
 
-    message =  "Buildbot finished compiling your patchset\n"
-    message += "on configuration: %s\n" % builderName
+    all_checks = {}
+    for step in build['steps']:
+        if step['name'] != 'build flake':
+            continue
+
+        for url in step['urls']:
+            if url['name'].startswith('success: checks.'):
+                path = url['name'].split(' ')[1]
+                all_checks[path] = (True, url['url'])
+            elif url['name'].startswith('failure: checks.'):
+                path = url['name'].split(' ')[1]
+                all_checks[path] = (False, url['url'])
+
+    collected_oses = {}
+    for check in all_checks:
+        arch = check.split('.')[1]
+        os = arch.split('-')[1]
+        (success, failure) = collected_oses.get(os, (0, 0))
+        if all_checks[check][0]:
+            success += 1
+        else:
+            failure += 1
+
+        collected_oses[os] = (success, failure)
+    labels = {}
+
+    if 'linux' in collected_oses:
+        (success, failure) = collected_oses['linux']
+        if success > 0 and failure == 0:
+            labels['Verified-On-Linux'] = 1
+        elif failure > 0:
+            labels['Verified-On-Linux'] = -1
+
+    if 'darwin' in collected_oses:
+        (success, failure) = collected_oses['darwin']
+        if success > 0 and failure == 0:
+            labels['Verified-On-Darwin'] = 1
+        elif failure > 0:
+            labels['Verified-On-Darwin'] = -1
+
+    message =  "Buildbot finished compiling your patchset!\n"
     message += "The result is: %s\n" % util.Results[result].upper()
+    if result != util.SUCCESS:
+        successful_checks = []
+        failed_checks = []
+        for check in all_checks:
+            if not all_checks[check][0]:
+                failed_checks.append(f" - {check} (see {all_checks[check][1]})")
+
+        if len(failed_checks) > 0:
+            message += "Failed checks:\n" + "\n".join(failed_checks) + "\n"
+
 
     if arg:
         message += "\nFor more details visit:\n"
         message += build['url'] + "\n"
 
-    if result == util.SUCCESS:
-        verified = 1
-    else:
-        verified = -1
-
-    return dict(message=message, labels={'Verified': verified})
+    return dict(message=message, labels=labels)
 
 def gerritStartCB(builderName, build, arg):
     message = "Buildbot started compiling your patchset\n"