[RFC 1/1] speedup localepurge task by emulating less

["'Felix Moessbauer' via isar-users" <isar-users@googlegroups.com>]

The download and dpkg status tasks do not need to be emulated, as these
properly support running without a chroot and for a foreign architecture.

The install task itself does support running without a chroot, however
not for a foreign architecture. By that, we keep the emulation of the
install task for now.

Signed-off-by: Felix Moessbauer <felix.moessbauer@siemens.com>
---
 meta/classes/image-locales-extension.bbclass | 8 +++++---
 meta/classes/rootfs.bbclass                  | 1 +
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/meta/classes/image-locales-extension.bbclass b/meta/classes/image-locales-extension.bbclass
index 9149d643..787719cd 100644
--- a/meta/classes/image-locales-extension.bbclass
+++ b/meta/classes/image-locales-extension.bbclass
@@ -29,8 +29,10 @@ ROOTFS_INSTALL_COMMAND_BEFORE_EXPORT += "image_install_localepurge_download"
 image_install_localepurge_download[weight] = "40"
 image_install_localepurge_download[network] = "${TASK_USE_NETWORK_AND_SUDO}"
 image_install_localepurge_download() {
-    sudo -E chroot '${ROOTFSDIR}' \
-        /usr/bin/apt-get ${ROOTFS_APT_ARGS} --download-only localepurge
+    sudo -E apt-get \
+        ${ROOTFS_APT_ARGS} \
+        ${NO_CHROOT_APT_ARGS} \
+        --download-only localepurge
 }
 
 ROOTFS_INSTALL_COMMAND += "image_install_localepurge_install"
@@ -63,7 +65,7 @@ __EOF__
     sudo -E -s <<'EOSUDO'
         set -e
         localepurge_state='i'
-        if chroot '${ROOTFSDIR}' dpkg -s localepurge 2>/dev/null >&2
+        if dpkg --root '${ROOTFSDIR}' -s localepurge 2>/dev/null >&2
         then
             echo 'localepurge was installed (leaving it installed later)'
         else
diff --git a/meta/classes/rootfs.bbclass b/meta/classes/rootfs.bbclass
index 4de684a4..1098a100 100644
--- a/meta/classes/rootfs.bbclass
+++ b/meta/classes/rootfs.bbclass
@@ -20,6 +20,7 @@ ROOTFS_BASE_DISTRO ?= "${BASE_DISTRO}"
 ROOTFS_FEATURES ?= ""
 
 ROOTFS_APT_ARGS="install --yes -o Debug::pkgProblemResolver=yes"
+NO_CHROOT_APT_ARGS ?= "-o APT::Architecture=${DISTRO_ARCH} -o Dir=${ROOTFSDIR}"
 
 ROOTFS_CLEAN_FILES="/etc/hostname /etc/resolv.conf"
 
-- 
2.50.1

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