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From e3a1f344c296f9d6193f4bf2ac1e0cdafcddce0e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Micha=C5=82=20G=C3=B3rny?= <mgorny@gentoo.org>
Date: Mon, 20 Jul 2020 18:11:31 +0200
Subject: [PATCH] Make jaraco.apt & yg.lockfile imports optional
Handle missing jaraco.apt & yg.lockfile modules more gracefully,
delaying the error until dependency_context is actually used. These
two modules are only used by the dependency_context, and this context
can only work on apt-based systems, so there is no point in forcing
the extraneous dependencies on systems that do not use apt where
jaraco.context is being installed for other context managers.
---
jaraco/context.py | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/jaraco/context.py b/jaraco/context.py
index 0b5b1bc..13dfdf6 100644
--- a/jaraco/context.py
+++ b/jaraco/context.py
@@ -13,8 +13,15 @@ try:
except Exception:
import contextlib as contextlib2
-import jaraco.apt
-import yg.lockfile
+try:
+ import jaraco.apt as apt
+except ImportError:
+ apt = None
+
+try:
+ import yg.lockfile
+except ImportError:
+ yg = None
__metaclass__ = type
@@ -131,6 +138,12 @@ def dependency_context(package_names, aggressively_remove=False):
"""
installed_packages = []
log = logging.getLogger(__name__)
+ if apt is None:
+ log.error("jaraco.apt not found installed")
+ raise ImportError("jaraco.apt not found installed")
+ if yg is None:
+ log.error("yg.lockfile not found installed")
+ raise ImportError("yg.lockfile not found installed")
try:
if not package_names:
logging.debug('No packages requested')
@@ -144,7 +157,7 @@ def dependency_context(package_names, aggressively_remove=False):
stderr=subprocess.STDOUT,
)
log.debug('Aptitude output:\n%s', output)
- installed_packages = jaraco.apt.parse_new_packages(
+ installed_packages = apt.parse_new_packages(
output, include_automatic=aggressively_remove
)
if not installed_packages:
--
2.27.0
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