fixed compression null check

Signed-off-by: Zen <[email protected]>

Author: desultory

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pycpio"
-version = "1.1.0"
+version = "1.1.1"
 authors = [
   { name="Desultory", email="[email protected]" },
 ]

src/pycpio/writer/writer.py

@@ -33,7 +33,7 @@ def compress(self, data):
             import lzma
             self.logger.info("Compressing data with xz, original size: %d" % len(data))
             data = lzma.compress(data)
-        elif self.compression is not None:
+        elif self.compression not in [False, 'False', None, '', 'false']:
             raise NotImplementedError("Compression type not supported: %s" % self.compression)
         return data