4. Den Quelltext bekommen¶
4.1. Quellpaket-URLs¶
Bazaar bietet einige nette Abkürzungen, um Zugang zu Launchpads Quellverzeichnispaketen zu bekommen, sowohl in Ubuntu als auch in Debian.
Um Dich auf Quellzweige zu beziehen benutze:
ubuntu:package
wobei Paket sich auf den Paketnamen bezieht, an dem du interessiert bist. Diese URL gehört zu dem Paket der aktuellen Entwicklerversion von Ubuntu. Um auf das Tomboy-Verzeichnis der Entwicklerversion zuzugreifen, würdest du benutzen:
ubuntu:tomboy
To refer to the version of a source package in an older release of Ubuntu, just prefix the package name with the release’s code name. E.g. to refer to Tomboy’s source package in Saucy use:
ubuntu:saucy/tomboy
Weil sie eindeutig sind, kannst Du die Distro-Serien-Namen auch abkürzen:
ubuntu:s/tomboy
You can use a similar scheme to access the source branches in Debian, although there are no shortcuts for the Debian distro-series names. To access the Tomboy branch in the current development series for Debian use:
debianlp:tomboy
and to access Tomboy in Debian Wheezy use:
debianlp:wheezy/tomboy
4.2. Den Quelltext herunterladen¶
Every source package in Ubuntu has an associated source branch on Launchpad. These source branches are updated automatically by Launchpad, although the process is not currently foolproof.
There are a couple of things that we do first in order to make the workflow more efficient later. Once you are used to the process you will learn when it makes sense to skip these steps.
4.2.2. Den trunk-Zweig bekommen¶
We use the bzr branch command to create a local branch of the package. We’ll name the target directory tomboy.dev just to keep things easy to remember:
$ bzr branch ubuntu:tomboy tomboy.dev
The tomboy.dev directory represents the version of Tomboy in the development version of Ubuntu, and you can always cd into this directory and do a bzr pull to get any future updates.
4.2.3. Sicherstellen, dass die Version aktuell ist¶
When you do your bzr branch you will get a message telling you if the packaging branch is up to date. For example:
$ bzr branch ubuntu:tomboy
Most recent Ubuntu version: 1.8.0-1ubuntu1.2
Packaging branch status: CURRENT
Branched 86 revisions.
Occasionally the importer fails and packaging branches do not match what is in the archive. A message saying:
Packaging branch status: OUT-OF-DATE
means the importer has failed. You can find out why on http://package-import.ubuntu.com/status/ and file a bug on the UDD project to get the issue resolved.
4.2.4. Upstream-Tar-Datei¶
Du kannst die Upstream-Tar-Datei bekommen in dem Du folgenden Befehl ausführst:
bzr get-orig-source
This will try a number of methods to get the upstream tar, firstly by recreating it from the upstream-x.y tag in the bzr archive, then by downloading from the Ubuntu archive, lastly by running debian/rules get-orig-source. The upstream tar will also be recreated when using bzr to build the package:
bzr builddeb
The builddeb plugin has several configuration options.
4.2.5. Einen Zweig fuer ein bestimmtes Release bekommen¶
When you want to do something like a stable release update (SRU), or you just want to examine the code in an old release, you’ll want to grab the branch corresponding to a particular Ubuntu release. For example, to get the Tomboy package for Quantal do:
$ bzr branch ubuntu:m/tomboy quantal
4.2.6. Ein Debian Quellpaket importieren¶
If the package you want to work on is available in Debian but not Ubuntu, it’s still easy to import the code to a local bzr branch for development. Let’s say you want to import the newpackage source package. We’ll start by creating a shared repository as normal, but we also have to create a working tree to which the source package will be imported (remember to cd out of the tomboy directory created above):
$ bzr init-repo newpackage
$ cd newpackage
$ bzr init debian
$ cd debian
$ bzr import-dsc http://ftp.de.debian.org/debian/pool/main/n/newpackage/newpackage_1.0-1.dsc
As you can see, we just need to provide the remote location of the dsc file, and Bazaar will do the rest. You’ve now got a Bazaar source branch.