[PATCH 2/4] remove apt cache dirs from final rootfs

[Felix Moessbauer <felix.moessbauer@siemens.com>]

In 0c177a4b an improvement was added to not add the apt cache to the
sstate cache. This lead to reproducibility issues in case the rootfs is
provided by the sstate cache, compared to a newly assembled one.

As these folders are created on-the-fly when running apt, we simply
remove them from the final image.

Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
---
 meta/classes/rootfs.bbclass | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/meta/classes/rootfs.bbclass b/meta/classes/rootfs.bbclass
index 86f228d0..870fcf2c 100644
--- a/meta/classes/rootfs.bbclass
+++ b/meta/classes/rootfs.bbclass
@@ -235,6 +235,8 @@ rootfs_postprocess_clean_package_cache() {
     sudo -E chroot '${ROOTFSDIR}' \
         /usr/bin/apt-get clean
     sudo rm -rf "${ROOTFSDIR}/var/lib/apt/lists/"*
+    # remove apt-cache folder itself (required in case rootfs is provided by sstate cache)
+    sudo rm -rf "${ROOTFSDIR}/var/cache/apt/archives"
 }
 
 ROOTFS_POSTPROCESS_COMMAND += "${@bb.utils.contains('ROOTFS_FEATURES', 'clean-log-files', 'rootfs_postprocess_clean_log_files', '', d)}"
-- 
2.34.1