2 files changed, 21 insertions, 10 deletions
diff --git a/src/fedpkg.py b/src/fedpkg.py
index f5cee54..ae829fa 100755
--- a/src/fedpkg.py
+++ b/src/fedpkg.py
@@ -344,29 +344,38 @@ def chainbuild(args):
     if mymodule.module in args.package:
         log.error('%s must not be in the chain' % mymodule.module)
         sys.exit(1)
+    # make sure we didn't get an empty chain
+    if args.package == [':']:
+        log.error('Must provide at least one dependency build')
+        sys.exit(1)
     # Break the chain up into sections
     urls = []
     build_set = []
     log.debug('Processing chain %s' % ' '.join(args.package))
     for component in args.package:
         if component == ':':
-            if build_set:
-                # We've hit the end of a set, add the set as a unit to the
-                # url list and reset the build_set.
-                urls.append(build_set)
-                log.debug('Created a build set: %s' % ' '.join(build_set))
-                build_set = []
+            # We've hit the end of a set, add the set as a unit to the
+            # url list and reset the build_set.
+            urls.append(build_set)
+            log.debug('Created a build set: %s' % ' '.join(build_set))
+            build_set = []
         else:
             # Figure out the scm url to build from package name
             try:
                 hash = pyfedpkg.get_latest_commit(component)
                 url = pyfedpkg.ANONGITURL % {'module':
                                              component} + '#%s' % hash
-                build_set.append(url)
             except pyfedpkg.FedpkgError, e:
                 log.error('Could not get a build url for %s: %s'
                           % (component, e))
                 sys.exit(1)
+            # If there are no ':' in the chain list, treat each object as an
+            # individual chain
+            if ':' in args.package:
+                build_set.append(url)
+            else:
+                urls.append([url])
+                log.debug('Created a build set: %s' % url)
     # Take care of the last build set if we have one
     if build_set:
         log.debug('Created a build set: %s' % ' '.join(build_set))
diff --git a/src/pyfedpkg/__init__.py b/src/pyfedpkg/__init__.py
index 9a5abc9..775306f 100644
--- a/src/pyfedpkg/__init__.py
+++ b/src/pyfedpkg/__init__.py
@@ -967,10 +967,12 @@ class PackageModule:
         # Handle the chain build version
         if chain:
             log.debug('Adding %s to the chain' % url)
-            chain[-1].append(url)
-            cmd.append(url)
+            chain.append([url])
+            # This next list comp is ugly, but it's how we properly get a :
+            # put in between each build set
+            cmd.extend(' : '.join([' '.join(sets) for sets in chain]).split())
             log.info('Chain building %s + %s for %s' % (self.nvr,
-                                                        chain,
+                                                        chain[:-1],
                                                         self.target))
             log.debug('Building chain %s for %s with options %s and a ' \
                       'priority of %s' %