diff --git a/platformio/commands/lib.py b/platformio/commands/lib.py
index 7b35a1f5..5e3965fb 100644
--- a/platformio/commands/lib.py
+++ b/platformio/commands/lib.py
@@ -125,7 +125,8 @@ def print_lib_item(item):
     click.echo("=" * len(item['name']))
     if "id" in item:
         click.secho("#ID: %d" % item['id'], bold=True)
-    click.echo(item.get("description", item.get("url", "")))
+    if "description" in item or "url" in item:
+        click.echo(item.get("description", item.get("url", "")))
     click.echo()
 
     for key in ("version", "homepage", "license", "keywords"):
@@ -223,8 +224,8 @@ def lib_search(query, json_output, page, noninteractive, **filters):
             break
         result = get_api_result(
             "/v2/lib/search",
-            dict(
-                query=" ".join(query), page=int(result['page']) + 1),
+            {"query": " ".join(query),
+             "page": int(result['page']) + 1},
             cache_valid="3d")
 
 
@@ -256,7 +257,11 @@ def get_builtin_libs(storage_names=None):
             if storage_names and storage['name'] not in storage_names:
                 continue
             lm = LibraryManager(storage['path'])
-            items.append(dict(name=storage['name'], items=lm.get_installed()))
+            items.append({
+                "name": storage['name'],
+                "path": storage['path'],
+                "items": lm.get_installed()
+            })
     return items
 
 
diff --git a/platformio/managers/lib.py b/platformio/managers/lib.py
index b41b0997..92e57a11 100644
--- a/platformio/managers/lib.py
+++ b/platformio/managers/lib.py
@@ -17,8 +17,9 @@
 import json
 import os
 import re
+from glob import glob
 from hashlib import md5
-from os.path import join
+from os.path import isdir, join
 
 import arrow
 import click
@@ -42,30 +43,23 @@ class LibraryManager(BasePkgManager):
             "module.json"
         ]
 
-    def check_pkg_structure(self, pkg_dir):
-        try:
-            return BasePkgManager.check_pkg_structure(self, pkg_dir)
-        except exception.MissingPackageManifest:
-            # we will generate manifest automatically
-            # if library doesn't contain any
-            pass
+    def get_manifest_path(self, pkg_dir):
+        path = BasePkgManager.get_manifest_path(self, pkg_dir)
+        if path:
+            return path
 
-        manifest = {
-            "name": "Library_" + md5(pkg_dir).hexdigest()[:5],
-            "version": "0.0.0"
-        }
-        for root, dirs, files in os.walk(pkg_dir):
-            if len(dirs) == 1 and not files:
-                manifest['name'] = dirs[0]
-                continue
-            if dirs or files:
-                pkg_dir = root
-                break
+        # if library without manifest, returns first source file
+        src_dir = join(util.glob_escape(pkg_dir))
+        if isdir(join(pkg_dir, "src")):
+            src_dir = join(src_dir, "src")
+        chs_files = glob(join(src_dir, "*.[chS]"))
+        if chs_files:
+            return chs_files[0]
+        cpp_files = glob(join(src_dir, "*.cpp"))
+        if cpp_files:
+            return cpp_files[0]
 
-        with open(join(pkg_dir, self.manifest_names[0]), "w") as fp:
-            json.dump(manifest, fp)
-
-        return pkg_dir
+        return None
 
     def load_manifest(self, path):
         manifest = BasePkgManager.load_manifest(self, path)
@@ -75,15 +69,13 @@ class LibraryManager(BasePkgManager):
         # if Arudino library.properties
         if "sentence" in manifest:
             manifest['frameworks'] = ["arduino"]
+            manifest['description'] = manifest['sentence']
+            del manifest['sentence']
 
         if "author" in manifest:
             manifest['authors'] = [{"name": manifest['author']}]
             del manifest['author']
 
-        if "sentence" in manifest:
-            manifest['description'] = manifest['sentence']
-            del manifest['sentence']
-
         if "keywords" not in manifest:
             keywords = []
             for keyword in re.split(r"[\s/]+",
@@ -131,6 +123,31 @@ class LibraryManager(BasePkgManager):
 
         return manifest
 
+    def check_pkg_structure(self, pkg_dir):
+        try:
+            return BasePkgManager.check_pkg_structure(self, pkg_dir)
+        except exception.MissingPackageManifest:
+            # we will generate manifest automatically
+            # if library doesn't contain any
+            pass
+
+        manifest = {
+            "name": "Library_" + md5(pkg_dir).hexdigest()[:5],
+            "version": "0.0.0"
+        }
+        for root, dirs, files in os.walk(pkg_dir):
+            if len(dirs) == 1 and not files:
+                manifest['name'] = dirs[0]
+                continue
+            if dirs or files:
+                pkg_dir = root
+                break
+
+        with open(join(pkg_dir, self.manifest_names[0]), "w") as fp:
+            json.dump(manifest, fp)
+
+        return pkg_dir
+
     @staticmethod
     def normalize_dependencies(dependencies):
         if not dependencies:
diff --git a/platformio/managers/package.py b/platformio/managers/package.py
index 55d2844f..8450ff52 100644
--- a/platformio/managers/package.py
+++ b/platformio/managers/package.py
@@ -155,18 +155,23 @@ class PkgInstallerMixin(object):
         if isfile(path) and path.endswith(self.VCS_MANIFEST_NAME):
             pkg_dir = dirname(dirname(path))
 
+        manifest = {}
         if path.endswith(".json"):
             manifest = util.load_json(path)
-        else:
-            manifest = {}
+        elif path.endswith(".properties"):
             with codecs.open(path, encoding="utf-8") as fp:
                 for line in fp.readlines():
                     if "=" not in line:
                         continue
                     key, value = line.split("=", 1)
                     manifest[key.strip()] = value.strip()
-        manifest['__pkg_dir'] = pkg_dir
+        else:
+            if "name" not in manifest:
+                manifest['name'] = basename(pkg_dir)
+            if "version" not in manifest:
+                manifest['version'] = "0.0.0"
 
+        manifest['__pkg_dir'] = pkg_dir
         return manifest
 
     def check_pkg_structure(self, pkg_dir):
diff --git a/platformio/managers/platform.py b/platformio/managers/platform.py
index a8f04678..85d963a2 100644
--- a/platformio/managers/platform.py
+++ b/platformio/managers/platform.py
@@ -560,7 +560,7 @@ class PlatformBase(PlatformPackagesMixin, PlatformRunMixin):
                 if not isdir(libcore_dir):
                     continue
                 storages.append({
-                    "name": "%s-%s" % (opts['package'], item),
+                    "name": "%s-core-%s" % (opts['package'], item),
                     "path": libcore_dir
                 })