diff --git a/packages/org.xbmc.kodi.py b/packages/org.xbmc.kodi.py
index 9f240ae..bc6e30a 100644
--- a/packages/org.xbmc.kodi.py
+++ b/packages/org.xbmc.kodi.py
@@ -77,7 +77,7 @@ def load() -> PackageRegistry:
         with open(ipk_path, 'rb') as f:
             ipk_hash = hashlib.sha256(f.read()).hexdigest()
 
-        appinfo = ipk_file.get_appinfo(ipk_path)
+        control, appinfo = ipk_file.get_appinfo(ipk_path)
         manifest = {
             'id': appinfo['id'],
             'title': appinfo['title'],
@@ -90,7 +90,8 @@ def load() -> PackageRegistry:
             'ipkHash': {
                 'sha256': ipk_hash
             },
-            'ipkSize': os.stat(ipk_path).st_size
+            'ipkSize': os.stat(ipk_path).st_size,
+            'installedSize': control['installedSize'],
         }
         with cache.open_file(manifest_name, 'w') as f:
             json.dump(manifest, f)
diff --git a/repogen/__main__.py b/repogen/__main__.py
index 121278e..ad08746 100644
--- a/repogen/__main__.py
+++ b/repogen/__main__.py
@@ -13,11 +13,13 @@
 parser.add_argument('-D', '--no-gen-details', dest='gen_details', action='store_false')
 parser.add_argument('-L', '--no-gen-list', dest='gen_list', action='store_false')
 
+parser.add_argument('-p', '--packages', nargs='+', required=False)
+
 parser.set_defaults(gen_api=True, gen_details=True, gen_list=True)
 
 args = parser.parse_args()
 
-packages = pkg_info.list_packages(Path(args.input_dir))
+packages = pkg_info.list_packages(Path(args.input_dir), args.packages)
 
 if args.gen_api:
     apidata.generate(packages, Path(args.output_dir, 'api'))
diff --git a/repogen/ipk_file.py b/repogen/ipk_file.py
index e5117cc..4db4d12 100644
--- a/repogen/ipk_file.py
+++ b/repogen/ipk_file.py
@@ -1,10 +1,15 @@
 import io
 import json
-import re
 import tarfile
-from typing import TypedDict, NotRequired
+from typing import TypedDict, NotRequired, Optional
 
 import ar
+from debian_parser import PackagesParser
+
+
+class Control(TypedDict):
+    version: str
+    installedSize: Optional[int]
 
 
 class AppInfo(TypedDict):
@@ -15,14 +20,21 @@ class AppInfo(TypedDict):
     appDescription: NotRequired[str]
 
 
-def get_appinfo(ipk_path: str) -> AppInfo:
+def get_appinfo(ipk_path: str) -> (Control, AppInfo):
     with open(ipk_path, 'rb') as f:
         archive = ar.Archive(f)
         control_file = io.BytesIO(archive.open('control.tar.gz', mode='rb').read())
         with tarfile.open(fileobj=control_file, mode='r:gz') as control:
             with control.extractfile(control.getmember('control')) as cf:
-                package_name = re.compile(r'Package: (.+)\n').match(cf.readline().decode('utf-8')).group(1)
+                parser = PackagesParser(cf.read().decode('utf-8'))
+                control_data = {entry['tag']: entry['value'] for entry in parser.parse()[0]}
+                package_name = control_data['Package']
+                installed_size = int(control_data['Installed-Size'])
+                control_info: Control = {
+                    'version': control_data['Version'],
+                    'installedSize': installed_size if installed_size > 10000 else None
+                }
         data_file = io.BytesIO(archive.open('data.tar.gz', mode='rb').read())
         with tarfile.open(fileobj=data_file, mode='r:gz') as data:
             with data.extractfile(data.getmember(f'usr/palm/applications/{package_name}/appinfo.json')) as af:
-                return json.load(af)
+                return control_info, json.load(af)
diff --git a/repogen/pkg_info.py b/repogen/pkg_info.py
index 961ef6e..224e25a 100644
--- a/repogen/pkg_info.py
+++ b/repogen/pkg_info.py
@@ -32,10 +32,9 @@ class PackageInfo(TypedDict):
     lastmodified_str: str
 
 
-def from_package_info_file(info_path: Path, offline=False) -> Optional[PackageInfo]:
+def load_registry(info_path: Path) -> (str, PackageRegistry):
     extension = info_path.suffix
     content: PackageRegistry
-    print(f'Parsing package info file {info_path.name}', file=sys.stderr)
     if extension == '.yml':
         pkgid, content = parse_yml_package(info_path)
     elif extension == '.py':
@@ -44,10 +43,16 @@ def from_package_info_file(info_path: Path, offline=False) -> Optional[PackageIn
         raise ValueError(f'Unrecognized info format {extension}')
     validator = validators.for_schema('packages/PackageInfo.json')
     validator.validate(content)
+    return pkgid, content
+
+
+def from_package_info_file(info_path: Path, offline=False) -> Optional[PackageInfo]:
+    pkgid, content = load_registry(info_path)
     return from_package_info(pkgid, content, offline)
 
 
 def from_package_info(pkgid: str, content: PackageRegistry, offline=False) -> PackageInfo:
+    print(f'Parsing package info for {pkgid}', file=sys.stderr)
     manifest_url = url_fixup(content['manifestUrl'])
     pkginfo: PackageInfo = {
         'id': pkgid,
@@ -99,10 +104,20 @@ def from_package_info(pkgid: str, content: PackageRegistry, offline=False) -> Pa
     return pkginfo
 
 
-def list_packages(pkgdir: Path, offline: bool = False) -> List[PackageInfo]:
+def list_packages(pkgdir: Path, packages: Optional[List[str]] = None, offline: bool = False) -> List[PackageInfo]:
     paths: List[Path] = [f for f in pkgdir.iterdir() if f.is_file()]
-    return sorted(filter(lambda x: x, map(lambda p: from_package_info_file(p, offline), paths)),
-                  key=lambda x: x['title'])
+
+    def map_package_info(p: Path) -> Optional[PackageInfo]:
+        pkgid, content = load_registry(p)
+        if packages and pkgid not in packages:
+            return None
+        try:
+            return from_package_info(pkgid, content, offline)
+        except Exception as e:
+            print(f'Error loading package info file {p.name}: {e}', file=sys.stderr)
+            return None
+
+    return sorted(filter(lambda x: x, map(map_package_info, paths)), key=lambda x: x['title'])
 
 
 def valid_pool(value: str) -> str:
diff --git a/repogen/pkg_manifest.py b/repogen/pkg_manifest.py
index 1e52ae7..f2f524a 100644
--- a/repogen/pkg_manifest.py
+++ b/repogen/pkg_manifest.py
@@ -29,7 +29,8 @@ class PackageManifest(TypedDict):
     rootRequired: NotRequired[bool | Literal['optional']]
     ipkUrl: str
     ipkHash: PackageHash
-    ipkSize: int
+    ipkSize: NotRequired[int]
+    installedSize: NotRequired[int]
 
 
 def obtain_manifest(pkgid: str, channel: str, uri: str, offline: bool = False) -> Tuple[PackageManifest, datetime]:
diff --git a/requirements.txt b/requirements.txt
index facf0b5..d964614 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,5 +15,6 @@ jsonschema~=4.19.1
 semantic-version~=2.10.0
 shellescape~=3.8.1
 lxml~=4.9.2
+debian-parser~=0.1.2
 git+https://github.com/Kronuz/pyScss.git@60414f5d573315a8458b5fbcdf69e5c648c44a9a#egg=pyscss
 git+https://github.com/webosbrew/pelican-theme-webosbrew.git@v1.0.9#egg=pelican-theme-webosbrew
\ No newline at end of file