Managing the Bazaar PPA

See also: Bazaar Developer Document Catalog.

Background

We build Ubuntu .deb packages for Bazaar as an important part of the release process. These packages are hosted in a few Personal Package Archives (PPA) on Launchpad.

As of June 2008, there are two PPAs:

<https://launchpad.net/~bzr/+archive>
Final released versions.
<https://launchpad.net/~bzr-beta-ppa/+archive>
Releases and release candidates.

We build packages for every supported Ubuntu release <https://wiki.ubuntu.com/Releases>. Packages need no longer be updated when the release passes end-of-life because all users should have upgraded by then. (As of May 2008, Edgy Eft is no longer supported.)

We build a distinct package for each distrorelease. As of bzr 1.5, Dapper uses python-support and later distributions use python-central. If you upload a release-specific version, you should add a suffix to the package version, e.g. bzr.1.3-1~bazaar1~dapper1.

Every package is first uploaded into the beta ppa. For final release versions it is also copied to the main PPA.

The debian/ directory containing the packaging information is kept in branches on Launchpad, named like <https://code.launchpad.net/~bzr/bzr/packaging-hardy>. or <lp:~bzr/bzr/packaging-hardy>.

Preconditions

Packaging Bazaar

Short form

For people who have already set up everything they need, building the release packages is as simple as:

cd ~/dev/bzr/releases/packaging
export UBUNTU_RELEASES="dapper feisty gutsy hardy intrepid"
~/dev/bzr/bzr.dev/tools/packaging/update-packaging-branches.sh
~/dev/bzr/bzr.dev/tools/packaging/update-changelogs.sh 1.6~beta3-1~bazaar1
~/dev/bzr/bzr.dev/tools/packaging/build-packages
dput bzr-beta-ppa build-area/bzr_1.6~beta3~bazaar1*.changes

Long Form

  1. You will end up checking out a separate directory for each supported release. Such as ~/dev/bzr/releases/packaging/hardy

  2. Decide on the final version number. It should be of this form:

    bzr-1.6~beta3-1~bazaar1~hardy1
    

    There are three hyphen-separated parts: the package name, the upstream version, and the packaging version.

    Caution: Upstream betas or release candidates must insert a tilde to make them sort before the final release, like this: bzr-1.6~beta3-1~bazaar1~hardy1.

    Final releases will use a release string of the form: bzr-1.6-1~bazaar1~hardy1

  3. Export the distroreleases that you will be packaging for:

    export UBUNTU_RELEASES="dapper feisty gutsy hardy intrepid"
    
  4. Checkout (or update) the packaging branch for each supported release:

    bzr co lp:~bzr/bzr/packaging-hardy
    

    There is a script available to help:

    tools/packaging/update-packaging-branches.sh
    
  5. The bzr-builddeb step will download the original tarball if you do not already have it. Putting it into a tarballs directory.

  6. For Bazaar plugins, change the debian/control file to express a dependency on the correct version of bzr.

    For bzrtools this is typically:

    Build-Depends-Indep: bzr (>= 1.6~), rsync
    Depends: ${python:Depends}, bzr (>= 1.6~), bzr (<< 1.7~), patch
    
  7. Make a new debian/changelog entry for the new release, either by using dch or just editing the file:

    dch -v '1.6~beta3-1~bazaar1~hardy1' -D hardy
    

    dch will default to the distro you're working in and this isn't checked against the version number (which is just our convention), so make sure to specify it.

    Make sure you have the correct email address for yourself, version number, and distribution. It should look something like this:

    bzr (1.6~beta3-1~bazaar1~hardy1) hardy; urgency=low
    
     * New upstream release.
    
    -- John Sample <sample@example.com>  Mon, 31 Mar 2008 12:36:27 +1100
    

    If you need to upload the package again to fix a problem, normally you should increment the last number in the version number, following the distro name. Make sure not to omit the initial -1, and make sure that the distro name in the version is consistent with the target name outside the parenthesis.

    You will also want to commit these changes into the packaging branch.

    There is a helper script which will update the changelog and commit it for all of your $UBUNTU_RELEASES. It is available as:

    tools/packaging/update-changelogs.sh
    

    You must supply the release string, such as:

    tools/packaging/update-changelogs.sh 1.6~beta3-1~bazaar1
    

    It will automatically append the distro numbering on the end.

  8. Build the source packages:

    cd packaging-$DISTRO; bzr builddeb -S
    

    This will create a .changes file in build-area. You will need to sign it with:

    debsign -m$UID build-area/*.changes
    

    Where $UID is the gpg key you want to use to sign the changes. Alternatively, you can configure ~/.bazaar/builddeb.conf with:

    [BUILDDEB]
    builder = dpkg-buildpackage -rfakeroot
    source-builder= dpkg-buildpackage -rfakeroot -S -sa
    

    Which tells bzr builddeb to automatically sign the package with the key associated with the user who created the changelog entry.

  9. Upload into the beta PPA for each release:

    dput bzr-beta-ppa build-area/*.changes
    
  10. For final release versions, also copy it into the ~bzr PPA:

    dput bzr-ppa ../bzr__1.6-1\~bazaar1\~hardy1\_source.changes
    

    Alternatively, you can use Launchpad's "copy" feature to copy the packages between repositories.

  11. You should soon get an "upload accepted" mail from Launchpad, which means that your package is waiting to be built. You can then track its progress in <https://launchpad.net/~bzr-beta-ppa/+archive> and <https://launchpad.net/~bzr-beta-ppa/+archive/+builds>.

Monitoring the contents of PPAs

If you add all the bzr PPAs to your sources.list then you can see a summary of current package versions with:

apt-cache madison bzr