diff --git a/bin/debpkg-bootstrap-branches b/bin/debpkg-bootstrap-branches
new file mode 100755
index 0000000..7c4e10c
--- /dev/null
+++ b/bin/debpkg-bootstrap-branches
@@ -0,0 +1,109 @@
+#!/bin/bash
+
+set -e
+set -x
+set -o pipefail
+
+package=$(basename $(pwd))
+module=${package//-/.}
+
+if [ $# -ne 0 ]; then
+  last_debian_rev=$1
+else
+  last_debian_rev=master
+fi
+
+git branch -D pristine-tar debian/upstream debian/unstable-swh debian/stretch-swh || true
+
+for tag in `git tag -l debian/*`; do
+  git tag -d $tag
+done
+
+for tag in `git tag -l --sort=v:refname v\*`; do
+  ver=${tag/v/}
+  if [ -f ../packages/${package}_${ver}.orig.tar.gz ]; then
+     continue
+  fi
+
+  git checkout $tag
+  if [ -d swh ]; then
+    git clean -dfx swh
+  fi
+  if [ -f yarn.lock ]; then
+    (yarn install --frozen-lockfile && yarn build) || true
+  fi
+  find . -maxdepth 1 -type d -name '*.egg-info' -exec rm -r '{}' \+
+  python3 setup.py egg_info
+  pname=$(awk '/^Name:/{print $2}' *.egg-info/PKG-INFO)
+  pver=$(awk '/^Version:/{print $2}' *.egg-info/PKG-INFO)
+  python3 setup.py sdist -d ../packages
+  mv ../packages/${pname}-${pver}.tar.gz ../packages/${package}_${ver}.orig.tar.gz
+done
+
+upstream_tag=v0.0.1
+ver=0.0.1
+
+author_name=$(git tag -l --format="%(if)%(*objecttype)%(then)%(taggername)%(else)%(authorname)%(end)" "${upstream_tag}")
+author_email=$(git tag -l --format="%(if)%(*objecttype)%(then)%(taggeremail)%(else)%(authoremail)%(end)" "${upstream_tag}")
+# Strip <>
+author_email=${author_email:1:-1}
+author_date=$(git tag -l --format="%(if)%(*objecttype)%(then)%(taggerdate:iso)%(else)%(authordate:iso)%(end)" "${upstream_tag}")
+
+export DEBEMAIL="${author_email}"
+export DEBFULLNAME="${author_name}"
+export GIT_AUTHOR_NAME="${author_name}"
+export GIT_AUTHOR_EMAIL="${author_email}"
+export GIT_AUTHOR_DATE="${author_date}"
+export GIT_COMMITTER_NAME="${author_name}"
+export GIT_COMMITTER_EMAIL="${author_email}"
+export GIT_COMMITTER_DATE="${author_date}"
+
+git checkout $upstream_tag
+git clean -dfx
+git checkout -b debian/upstream
+
+git ls-tree --name-only HEAD | xargs rm -r
+tar -x --strip-components 1 -f ../packages/${package}_0.0.1.orig.tar.gz
+git add .
+git commit --no-verify -m "Import upstream version 0.0.1"
+git tag debian/upstream/0.0.1
+
+git checkout --orphan pristine-tar
+pristine-tar commit ../packages/${package}_0.0.1.orig.tar.gz
+
+git checkout debian/upstream
+git checkout -b debian/unstable-swh
+git checkout ${last_debian_rev} -- debian
+cat > debian/gbp.conf << EOF
+[DEFAULT]
+upstream-branch=debian/upstream
+upstream-tag=debian/upstream/%(version)s
+upstream-vcs-tag=v%(version)s
+debian-branch=debian/unstable-swh
+pristine-tar=True
+EOF
+
+rm debian/changelog
+faketime "${author_date}" dch --create --package ${package} -v 0.0.1-1~swh1 'Initial release'
+
+git tag -l --format="%(contents:subject)%(if)%(contents:body)%(then)%0a%(contents:body)%(end)" "${upstream_tag}" | sed -E -e '/^$/d' -e 's/^ *(- *)?//' | while read line; do
+  faketime "${author_date}" dch "${line}"
+done
+
+faketime "${author_date}" dch -D unstable-swh --force-distribution ''
+
+git add debian
+git commit --no-verify -m "Updated debian directory for version 0.0.1"
+
+git checkout -b debian/stretch-swh
+faketime "${author_date}" dch --bpo -D stretch-swh --force-distribution ''
+git add debian/changelog
+sed -i s/unstable/stretch/ debian/gbp.conf
+git add debian/gbp.conf
+git commit --no-verify -m "Updated debian stretch backport directory for version 0.0.1"
+
+for tag in `git tag -l --sort=v:refname v\* | tail -n +2`; do
+  version=${tag/v/}
+  echo $tag: $version
+  ../bin/debpkg-bump-version $version ../packages/${package}_${version}.orig.tar.gz
+done
diff --git a/bin/debpkg-bump-version b/bin/debpkg-bump-version
new file mode 100755
index 0000000..624b223
--- /dev/null
+++ b/bin/debpkg-bump-version
@@ -0,0 +1,75 @@
+#!/bin/bash
+
+set -e
+
+if [ $# -lt 2 -o $# -gt 3 ]; then
+    echo "usage: $0 <new-version> <sdist> [<tagname>]"
+    exit 2
+fi
+
+newver="$1"
+shift
+sdist="$1"
+shift
+if [ $# -eq 1 ]; then
+    upstream_tag=$1
+    shift
+else
+    upstream_tag="v${newver}"
+fi
+
+debian_tag="debian/upstream/${newver}"
+
+echo 'Updating tags...'
+git fetch --tags
+
+if git show-ref --quiet "refs/tags/${debian_tag}"; then
+    echo "Tag ${debian_tag} already exists!"
+    exit 0
+fi
+
+if ! git show-ref --quiet "refs/tags/${upstream_tag}"; then
+    echo "No tag ${upstream_tag} exists, aborting!"
+    exit 3
+fi
+
+if ! git diff-index --quiet HEAD --; then
+    echo "Git repository not clean, aborting!"
+    git status
+    exit 4
+fi
+
+author_name=$(git tag -l --format="%(if)%(*objecttype)%(then)%(taggername)%(else)%(authorname)%(end)" "${upstream_tag}")
+author_email=$(git tag -l --format="%(if)%(*objecttype)%(then)%(taggeremail)%(else)%(authoremail)%(end)" "${upstream_tag}")
+# Strip <>
+author_email=${author_email:1:-1}
+author_date=$(git tag -l --format="%(if)%(*objecttype)%(then)%(taggerdate:iso)%(else)%(authordate:iso)%(end)" "${upstream_tag}")
+
+export DEBEMAIL="${author_email}"
+export DEBFULLNAME="${author_name}"
+export GIT_AUTHOR_NAME="${author_name}"
+export GIT_AUTHOR_EMAIL="${author_email}"
+export GIT_AUTHOR_DATE="${author_date}"
+export GIT_COMMITTER_NAME="${author_name}"
+export GIT_COMMITTER_EMAIL="${author_email}"
+export GIT_COMMITTER_DATE="${author_date}"
+
+git checkout debian/unstable-swh
+gbp import-orig -u "${newver}" "${sdist}"
+faketime "${author_date}" dch -v "${newver}-1~swh1" ''
+git tag -l --format="%(contents:subject)%(if)%(contents:body)%(then)%0a%(contents:body)%(end)" "${upstream_tag}" | sed -E -e '/^$/d' -e 's/^ *(- *)?//' | while read line; do
+  faketime "${author_date}" dch "${line}"
+done
+faketime "${author_date}" dch -D unstable-swh --force-distribution ''
+git add debian/changelog
+git commit --no-verify -m "Updated debian directory for version ${newver}"
+
+git checkout debian/stretch-swh
+git merge debian/unstable-swh --no-commit --no-edit || true
+git checkout debian/unstable-swh -- debian/changelog
+git add debian/changelog
+git commit --no-verify --no-edit
+
+faketime "${author_date}" dch --bpo -D stretch-swh --force-distribution ''
+git add debian/changelog
+git commit --no-verify -m "Updated debian stretch backport directory for version ${newver}"
diff --git a/bin/debpkg-update-metadata b/bin/debpkg-update-metadata
new file mode 100755
index 0000000..c41f2c1
--- /dev/null
+++ b/bin/debpkg-update-metadata
@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+
+import glob
+import os
+import sys
+
+sys.path.append('/usr/share/dh-python')
+
+from dhpython.pydist import guess_dependency
+
+
+def parse_requirements(filename):
+    requirements = []
+    if not os.path.exists(filename):
+        return requirements
+
+    with open(filename) as f:
+        for line in f.readlines():
+            line = line.strip()
+            if not line or line.startswith('#'):
+                continue
+            requirements.append(line)
+    return requirements
+
+
+def dependencies_from_requirements(directory):
+    requirements = []
+    for filename in glob.glob(os.path.join(directory, 'requirements*.txt')):
+        requirements.extend(parse_requirements(filename))
+
+    for req in set(requirements):
+        yield guess_dependency('cpython3', req, accept_upstream_versions=True)
+
+
+def get_all_dependencies(directory):
+    dependencies = ['debhelper (>= 11)', 'python3-all', 'dh-python (>= 3)']
+    yield from dependencies
+    yield from dependencies_from_requirements(directory)
+
+
+if __name__ == '__main__':
+    if len(sys.argv) != 2:
+        dir = '.'
+    else:
+        dir = sys.argv[1]
+    for dep in get_all_dependencies(dir):
+        print(dep)