fix: add upper bound for packaging version (#3331)

`packaging` 22.0 removes `LegacyVersion`, which `pip-requirements-parser` is currently using
bentoml · Dec 8, 2022 · b9b86fd · b9b86fd
1 parent 2f5e247
commit b9b86fd
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Showing 2 changed files with 3 additions and 2 deletions.
diff --git a/pyproject.toml b/pyproject.toml
@@ -47,7 +47,7 @@ dependencies = [
   "opentelemetry-instrumentation-asgi==0.35b0",
   "opentelemetry-semantic-conventions==0.35b0",
   "opentelemetry-util-http==0.35b0",
-  "packaging>=20.0",
+  "packaging>=20.0,<22",
   "pathspec",
   "pip-tools>=6.6.2",
   "pip-requirements-parser>=31.2.0",

diff --git a/src/bentoml/_internal/bento/build_config.py b/src/bentoml/_internal/bento/build_config.py
@@ -16,7 +16,6 @@
 import psutil
 import fs.copy
 from pathspec import PathSpec
-from pip_requirements_parser import RequirementsFile
 
 from ..utils import bentoml_cattr
 from ..utils import resolve_user_filepath
@@ -598,6 +597,8 @@ def write_to_bento(self, bento_fs: FS, build_ctx: str) -> None:
             f.write(install_sh)
 
         if self.requirements_txt is not None:
+            from pip_requirements_parser import RequirementsFile
+
             requirements_txt = RequirementsFile.from_file(
                 resolve_user_filepath(self.requirements_txt, build_ctx),
                 include_nested=True,