Add prebuild hook

Can be used to add an upstream changelog generated from the
git repository to the build dir.

Closes: #587652

2 files changed, 5 insertions, 0 deletions

diff --git a/gbp/config.py b/gbp/config.py
index 7c932007..a0ca547a 100644
--- a/gbp/config.py
+++ b/gbp/config.py
@@ -37,6 +37,7 @@ class GbpOptionParser(OptionParser):
                  'keyid'           : '',
                  'posttag'         : '',
                  'postbuild'       : '',
+                 'prebuild'        : '',
                  'postimport'      : '',
                  'debian-tag'      : 'debian/%(version)s',
                  'upstream-tag'    : 'upstream/%(version)s',
diff --git a/gbp/git.py b/gbp/git.py
index 8546a833..c09ce1ea 100644
--- a/gbp/git.py
+++ b/gbp/git.py
@@ -62,6 +62,10 @@ class GitRepository(object):
             stdin = None
         return stdin
 
+    def base_dir(self):
+        """Base of the repository"""
+        return os.path.join(self.path, '.git')
+
     def has_branch(self, branch, remote=False):
         """
         check if the repository has branch 'branch'