Allow setup.py to ignore OpenCV dependency.HEADmaster

Long story, but setuptools has a hard time recognizing system-managed
OpenCV, and tries to install it anywway when building RasterCarve
Live. Allow suppressing that installation by setting the environment
variable SETUP_IGNORE_OPENCV=1.

1 files changed, 2 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index bb9025c..ab86e49 100755
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+import os
 import setuptools
 from rastercarve import __version__
 
@@ -25,7 +26,7 @@ setuptools.setup(
         "Topic :: Utilities",
     ],
     python_requires='>=3.6',
-    install_requires=["opencv-python", "numpy", "tqdm", "argparse"],
+    install_requires=["numpy", "tqdm", "argparse"] + ["opencv-python"] if os.getenv("SETUP_IGNORE_OPENCV", "0")=="0" else [],
     entry_points={
         "console_scripts": [
             "rastercarve=rastercarve.__main__:main",