package_manager: flush installed_pkgs file before oe-pkgdata-util uses it

* since this commit:
  commit f5a1013ffa9815f22e13989e2bcb83f966e7ce2c
  Author: Ross Burton <ross.burton@intel.com>
  Date:   Tue Apr 18 16:19:12 2017 +0100

    package_manager: don't race on a file when installing complementary
    packages

  the file isn't closed before oe-pkgdata-util uses it and this
  temporary file might look empty to oe-pkgdata-util, because it
  wasn't flushed yet. Which resulted in almost empty debugfs tarballs
  and no locale packages in regular rootfs.
* without this change:
  124K May 30 07:41 core-image-full-cmdline-raspberrypi3-64-20170530054003-dbg.rootfs.tar.gz
* with this change:
  173M May 30 07:29 core-image-full-cmdline-raspberrypi3-64-20170530052715-dbg.rootfs.tar.gz

(From OE-Core rev: 877d38db08aa7060d16405443cf70539c559fe82)

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/meta/lib/oe/package_manager.py b/meta/lib/oe/package_manager.py
index caccd7baa9..bc4e3013f0 100644
--- a/meta/lib/oe/package_manager.py
+++ b/meta/lib/oe/package_manager.py
@@ -399,6 +399,7 @@ class PackageManager(object, metaclass=ABCMeta):
             pkgs = self.list_installed()
             output = oe.utils.format_pkg_list(pkgs, "arch")
             installed_pkgs.write(output)
+            installed_pkgs.flush()
 
             cmd = [bb.utils.which(os.getenv('PATH'), "oe-pkgdata-util"),
                    "-p", self.d.getVar('PKGDATA_DIR'), "glob", installed_pkgs.name,