Merge pull request #297 from bollwyvl/gh-296-optional-gitpython

make gitpython dependency optional

conda_lock/conda_lock.py

@@ -3,6 +3,7 @@
 """
 
 import datetime
+import importlib.util
 import logging
 import os
 import pathlib
@@ -823,10 +824,21 @@ def create_lockfile_from_spec(
     else:
         time_metadata = None
 
-    git_metadata = GitMeta.create(
-        metadata_choices=metadata_choices,
-        src_files=spec.sources,
-    )
+    if metadata_choices & {
+        MetadataOption.GitUserEmail,
+        MetadataOption.GitUserName,
+        MetadataOption.GitSha,
+    }:
+        if not importlib.util.find_spec("git"):
+            raise RuntimeError(
+                "The GitPython package is required to read Git metadata."
+            )
+        git_metadata = GitMeta.create(
+            metadata_choices=metadata_choices,
+            src_files=spec.sources,
+        )
+    else:
+        git_metadata = None
 
     if metadata_choices & {MetadataOption.InputSha, MetadataOption.InputMd5}:
         inputs_metadata: Optional[Dict[str, InputMeta]] = {

conda_lock/src_parser/__init__.py

@@ -169,7 +169,10 @@ def create(
         metadata_choices: AbstractSet[MetadataOption],
         src_files: List[pathlib.Path],
     ) -> "GitMeta | None":
-        import git
+        try:
+            import git
+        except ImportError:
+            return None
 
         git_sha: "str | None" = None
         git_user_name: "str | None" = None

requirements-dev.txt

@@ -27,3 +27,4 @@ mkdocs-click
 mkdocs-include-markdown-plugin
 flaky
 docker
+gitpython

requirements.txt

@@ -7,7 +7,6 @@ pyyaml >= 5.1
 ruamel.yaml
 tomli; python_version<"3.11"
 typing-extensions
-gitpython
 toolz >=0.12.0,<1.0.0
 # poetry:
 cachecontrol[filecache] >=0.12.9
@@ -35,4 +34,4 @@ requests >=2.18
 # poetry:
 tomlkit >=0.7.0
 # poetry:
-virtualenv >=20.0.26
+virtualenv >=20.0.26