Merge pull request #48 from dhellmann/doc-version-git

doc build take version from git when package not installed

docs/source/conf.py

@@ -14,7 +14,15 @@
 
 import datetime
 
-import virtualenvwrapper.version
+# Try to import the version from our package, but if that fails
+# because of the way the RTD build works fall back to at least using
+# the git tag information.
+try:
+    from virtualenvwrapper.version import version
+except ImportError:
+    import subprocess
+    p = subprocess.run(['git', 'describe'], stdout=subprocess.PIPE)
+    version = p.stdout.decode('utf-8').strip()
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -52,7 +60,7 @@
 # built documents.
 #
 # The short X.Y version.
-version = virtualenvwrapper.version.version
+# version = "SEE IMPORTS ABOVE"
 # The full version, including alpha/beta/rc tags.
 release = version