[PATCH v4 02/12] dpkg-gbp: Use host tools for dsc preparation

[Uladzimir Bely <ubely@ilbers.de>]

Instead of preinstalling gbp-related packages in sbuild chroot
we will use their host versions in order to keep sbuild environment
as clean as possible.

Signed-off-by: Uladzimir Bely <ubely@ilbers.de>
---
 doc/user_manual.md            |  4 +++-
 meta/classes/dpkg-gbp.bbclass | 24 ++++--------------------
 2 files changed, 7 insertions(+), 21 deletions(-)

diff --git a/doc/user_manual.md b/doc/user_manual.md
index caaab8cc..97270167 100644
--- a/doc/user_manual.md
+++ b/doc/user_manual.md
@@ -79,7 +79,9 @@ apt install \
   qemu \
   qemu-user-static \
   reprepro \
-  sudo
+  sudo \
+  git-buildpackage \
+  pristine-tar
 ```
 
 If your host is >= buster, also install the following package.
diff --git a/meta/classes/dpkg-gbp.bbclass b/meta/classes/dpkg-gbp.bbclass
index ddf23ca5..2fc37b2f 100644
--- a/meta/classes/dpkg-gbp.bbclass
+++ b/meta/classes/dpkg-gbp.bbclass
@@ -9,29 +9,13 @@ S = "${WORKDIR}/git"
 
 PATCHTOOL ?= "git"
 
-GBP_DEPENDS ?= "git-buildpackage pristine-tar"
 GBP_EXTRA_OPTIONS ?= "--git-pristine-tar"
 
-do_install_builddeps_append() {
-    dpkg_do_mounts
-    distro="${DISTRO}"
-    if [ ${ISAR_CROSS_COMPILE} -eq 1 ]; then
-       distro="${HOST_DISTRO}"
-    fi
-    deb_dl_dir_import "${BUILDCHROOT_DIR}" "${distro}"
-    sudo -E chroot ${BUILDCHROOT_DIR} \
-        apt-get install -y -o Debug::pkgProblemResolver=yes \
-                        --no-install-recommends --download-only ${GBP_DEPENDS}
-    deb_dl_dir_export "${BUILDCHROOT_DIR}" "${distro}"
-    sudo -E chroot ${BUILDCHROOT_DIR} \
-        apt-get install -y -o Debug::pkgProblemResolver=yes \
-                        --no-install-recommends ${GBP_DEPENDS}
-    dpkg_undo_mounts
-}
-
 dpkg_runbuild_prepend() {
-    sudo -E chroot --userspec=$( id -u ):$( id -g ) ${BUILDCHROOT_DIR} \
-        sh -c "cd ${PP}/${PPS} && gbp buildpackage --git-builder=/bin/true ${GBP_EXTRA_OPTIONS}"
+    sh -c "
+        cd ${WORKDIR}/${PPS}
+        gbp buildpackage --git-builder=/bin/true ${GBP_EXTRA_OPTIONS}
+    "
     # NOTE: `buildpackage --git-builder=/bin/true --git-pristine-tar` is used
     # for compatibility with gbp version froms debian-stretch. In newer distros
     # it's possible to use a subcommand `export-orig --pristine-tar`
-- 
2.20.1