diff --git a/HISTORY.rst b/HISTORY.rst
index 0825752f4c..1451fd11bb 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -64,6 +64,9 @@ PlatformIO 3.0
   + Support for the 3rd party manifests (Arduino IDE "library.properties"
     and ARM mbed "module.json")
 
+* Added support for BBC micro:bit board that is built on the ARM mbed and
+  Nordic nrf51 platform
+  (`issue #709 <https://github.com/platformio/platformio/issues/709>`_)
 * Print human-readable information when processing environments without
   ``-v, --verbose`` option
   (`issue #721 <https://github.com/platformio/platformio/issues/721>`_)
diff --git a/platformio/__init__.py b/platformio/__init__.py
index fe95a14d6a..e880489ee4 100644
--- a/platformio/__init__.py
+++ b/platformio/__init__.py
@@ -14,7 +14,7 @@
 
 import sys
 
-VERSION = (3, 0, "0a2")
+VERSION = (3, 0, "0a3")
 __version__ = ".".join([str(s) for s in VERSION])
 
 __title__ = "platformio"
diff --git a/platformio/builder/tools/piolib.py b/platformio/builder/tools/piolib.py
index ad81bdeba5..795f72e644 100644
--- a/platformio/builder/tools/piolib.py
+++ b/platformio/builder/tools/piolib.py
@@ -24,6 +24,7 @@
 
 from platformio import util
 from platformio.builder.tools import platformio as piotool
+from platformio.managers.lib import LibraryManager
 
 
 class LibBuilderFactory(object):
@@ -105,28 +106,8 @@ def version(self):
 
     @property
     def dependencies(self):
-        deps = self._manifest.get("dependencies")
-        if not deps:
-            return deps
-        items = []
-        if isinstance(deps, dict):
-            if "name" in deps:
-                items.append(deps)
-            else:
-                for name, version in deps.items():
-                    items.append({"name": name, "version": version})
-        elif isinstance(deps, list):
-            items = [d for d in deps if "name" in d]
-        for item in items:
-            for k in ("frameworks", "platforms"):
-                if k not in item or isinstance(k, list):
-                    continue
-                if item[k] == "*":
-                    del item[k]
-                elif isinstance(item[k], basestring):
-                    item[k] = [i.strip() for i in item[k].split(",")
-                               if i.strip()]
-        return items
+        return LibraryManager.normalize_dependencies(
+            self._manifest.get("dependencies", []))
 
     @property
     def src_filter(self):
diff --git a/platformio/managers/lib.py b/platformio/managers/lib.py
index a34a196b4a..ce1543a880 100644
--- a/platformio/managers/lib.py
+++ b/platformio/managers/lib.py
@@ -33,6 +33,30 @@ def __init__(self, package_dir=None):
     def manifest_name(self):
         return ".library.json"
 
+    @staticmethod
+    def normalize_dependencies(dependencies):
+        if not dependencies:
+            return []
+        items = []
+        if isinstance(dependencies, dict):
+            if "name" in dependencies:
+                items.append(dependencies)
+            else:
+                for name, version in dependencies.items():
+                    items.append({"name": name, "version": version})
+        elif isinstance(dependencies, list):
+            items = [d for d in dependencies if "name" in d]
+        for item in items:
+            for k in ("frameworks", "platforms"):
+                if k not in item or isinstance(k, list):
+                    continue
+                if item[k] == "*":
+                    del item[k]
+                elif isinstance(item[k], basestring):
+                    item[k] = [i.strip() for i in item[k].split(",")
+                               if i.strip()]
+        return items
+
     @staticmethod
     def max_satisfying_repo_version(versions, requirements=None):
 
@@ -132,10 +156,7 @@ def install(self, name, requirements=None, quiet=False,
         if not quiet:
             click.secho("Installing dependencies", fg="yellow")
 
-        _dependencies = manifest['dependencies']
-        if not isinstance(_dependencies, list):
-            _dependencies = [_dependencies]
-        for filters in _dependencies:
+        for filters in self.normalize_dependencies(manifest['dependencies']):
             assert "name" in filters
             if any([s in filters.get("version", "") for s in ("\\", "/")]):
                 self.install("{name}={version}".format(**filters))