[PATCH] dpkg-base: Support format source 3.0 (git)

[Alexander Smirnov <asmirnov@ilbers.de>]

By default git objects are inaccessible from buildchroot but they could
be required by dpkg-buildpackage. So this patch fetches objects to work
directory and drop alternates.

NOTE: this is a workaround and it's intended to unblock the work until
proper solution will be implemented in bitbake.

Signed-off-by: Alexander Smirnov <asmirnov@ilbers.de>
---
 meta/classes/dpkg-base.bbclass | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/meta/classes/dpkg-base.bbclass b/meta/classes/dpkg-base.bbclass
index 4941f9b..ad58f0b 100644
--- a/meta/classes/dpkg-base.bbclass
+++ b/meta/classes/dpkg-base.bbclass
@@ -18,6 +18,13 @@ dpkg_runbuild() {
 
 # Wrap the function dpkg_runbuild with the bind mount for buildroot
 do_build() {
+    # Packages with format source 3.0 (git) require access to git objects,
+    # so drop alternates and fetch them to package working directory
+    if [ -f ${WORKDIR}/git/.git/objects/info/alternates ]; then
+        git --git-dir ${WORKDIR}/git/.git repack -a
+        rm -f ${WORKDIR}/git/.git/objects/info/alternates
+    fi
+
     mkdir -p ${BUILDROOT}
     sudo mount --bind ${WORKDIR} ${BUILDROOT}
     _do_build_cleanup() {
-- 
2.9.5