File: retrieve-version-from-debian-changelog.diff

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Description: retrieve upstream version from debian/changelog
Author: Jérémy Bobbio <lunar@debian.org>

diff --git a/version.py b/version.py
index 3441617..5c975ce 100644
--- a/version.py
+++ b/version.py
@@ -9,26 +9,12 @@ from subprocess import CalledProcessError, check_output
 version_re = re.compile('^Version: (.+)$', re.M)
 
 def get_version():
-    d = dirname(__file__)
-
-    if isdir(join(d, '.git')):
-        # Get the version using "git describe".
-        cmd = 'git describe --tags --match [0-9]*'.split()
-        try:
-            version = check_output(cmd).decode().strip()
-        except CalledProcessError:
-            print('Unable to get version number from git tags')
-            exit(1)
-
-        # PEP 386 compatibility
-        if '-' in version:
-            version = '.post'.join(version.split('-')[:2])
-
-    else:
-        # Extract the version from the PKG-INFO file.
-        with open(join(d, 'PKG-INFO')) as f:
-            version = version_re.search(f.read()).group(1)
-
+    cmd = 'dpkg-parsechangelog -S Version'.split()
+    try:
+        version = check_output(cmd).decode().strip().split('-')[0]
+    except CalledProcessError:
+        print('Unable to get version number from git tags')
+        exit(1)
     return version