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2011 May 3 [Tuesday]

Building packages from source tutorial by DebianWomen

DW is conducting a packaging tutorial. Do note, this is not a tutorial for upstream package building from source, but still, its worth listening to. Here is Marga's announcement::

Are you enthusiastic about Debian and thinking about contributing? We want to guide you with the basics.

We are convinced that there are a lot of people out there that want to get involved with Free Software but don't know where to start.  For Debian, the most common task you'll do as a contributor is rebuilding a package.

The Debian Women project, in collaboration with the OpenHatch project, will be holding an IRC event to help people that want to compile their first Debian package from source, and apply their first patch.

The event

On Saturday May 7th, two tutorial sessions will be held on #debian-women on irc.debian.org to help people rebuild a package for the first time.
The earlier session, suggested for those that live in Oceania, Asia, Africa and Europe, will be held at 11:00 UTC. 

The later session, suggested for those that live in the Americas, will be held at 22:00 UTC. You can find out the exact time in your timezone by using the timezone converter: http://www.timezoneconverter.com/cgi-bin/tzc.tzc

There will be people available to answer questions and generally help out with any difficulties that might arise all along the day.

More info at http://wiki.debian.org/DebianWomen/BuildItEvent

Intended audience

This event is aimed to anyone who wants to rebuild a Debian package for the first time, it's a simple task that doesn't require any previous knowledge, only a working installation of Debian (or Ubuntu, or other Debian-derived system).  We want to particularly encourage women who want to get involved, to take their first steps in
contributing to Free Software, but everybody is welcome.

More about IRC

IRC is a real-time chat system you can use to get in touch with members of the Debian community. You can connect to IRC through lots of different clients, including xchat, pidgin and konversation.

About Debian Women

The Debian Women project seeks to balance and diversify the Debian Project by actively engaging with interested women and encouraging them to become more involved with Debian. http://women.debian.org

About OpenHatch

OpenHatch is an open source community aiming to help newcomers find their way into free software projects. It works towards this goal through on-line and outreach events. This event is a reappropriation of the OpenHatch "Build it" events.


2010 June 2 [Wednesday]

Pbuilder installation on UbuntuHardy

Pbuilder, constructs a chroot system and builds a package inside the chroot. It is an ideal system to use to check that a package has correct build dependencies and to build clean packages to be tested and distributed. Debian uses pbuilder for packaging and they have lotsa manuals...




Pbuilder manual - Junichi Uekawa


Ubuntu also uses Pbuilder for all their packaging work. Ubuntu has a Packaging Guide but i was following the instruction on the Ubuntu wiki page while trying to install it on hardy. Installed the dependencies and tried to create it.

$sudo pbuilder create --distribution hardy --othermirror "deb http://archive.ubuntu.com/ubuntu hardy main restricted universe multiverse"

Error!! "Command line parameter [.dsc] is not a valid .dsc file name"

The .pbuilderrc file was supposed to be created automagically but it wasnt.


But it was nigelb and geser to the rescue and its the real-time responses that makes me addicted to IRC but I find it amusing that we use cryptic and terse mode of communication on irc as compared to complete sentences in email/forums. hmmm...not sure if this is good or bad in the long runbut switching modes suddenly makes it kinda weird.

$sudo pbuilder create

$sudo pbuilder update --override-config

Upgrading for distribution hardy
Building the build Environment
extracting base tarball [/var/cache/pbuilder/base.tgz]
creating local configuration
copying local configuration
Installing apt-lines
mounting /proc filesystem
mounting /dev/pts filesystem
policy-rc.d already exists
Refreshing the base.tgz
upgrading packages
Hit http://archive.ubuntu.com hardy Release.gpg
Hit http://archive.ubuntu.com hardy Release
Hit http://archive.ubuntu.com hardy/main Packages
Reading package lists... Done
dpkg - warning: ignoring request to remove lilo which isn't installed.
Obtaining the cached apt archive contents
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Reading package lists... Done
Building dependency tree
Reading state information... Done
build-essential is already the newest version.
dpkg-dev is already the newest version.
apt is already the newest version.
aptitude is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
Copying back the cached apt archive contents
unmounting dev/pts filesystem
unmounting proc filesystem
creating base tarball [/var/cache/pbuilder/base.tgz]
cleaning the build env
removing directory /var/cache/pbuilder/build//15479 and its subdirectories

...and pbuilder was ready to be used.

$sudo apt-get update

Next it was pulling a package to build and source it via wget, apt-get, or dget for the .dsc file from packages.ubuntu.com -- only for packages in the ubuntu repo. If your code sits as a branch on your cvs, it wont be pulled from packages.ubuntu.com.

The 'Packaging from Scratch' section asks you to create a directory before using wget but its a different method when you are using a cvs. If its hosted on LP, use bzr to pull it::

$sudo bzr export -r73 /dest/dir lp:~systers/systers/stable

and make sure you dont create the "/dest/dir" by hand as bzr will protest that the file exists in the target directory but the target dir will be empty. Bzr export needs a non-existing destination as it will create the directory owned to root. Somewhere in the middle of changing the ownership it simply locked me out ...wtf? and the next steps failed quite obviously. Then I had to waste a lot of time deleteing each file and folder.

In between this, Bescom decided to be the royal pita that they usually are, conked off power for half the day-- they had some work being done at the supplying station and the engineer was even kind enough to warn the residents of our area that an electric pole was going to be replaced in the street this week so be prepared for power outages at intermittent intervals of 10-15 minutes outage all day as they would be testing. WTF? Telling him that electrical appliances dont tolerate this well got the stock reply "install an UPS". How kind of him to enlighten us. Dont I just love the way our government servants treat the tax-paying citizens.

Adding to the annoyance, nothing worked after that. dh_make, used to create a template for packaging would not be invoked and I recall reading somewhere that dh_make was supposed to be done right the first time, else it would not work. 

$dpkg-source -x *.dsc
dpkg-source: error: cannot open .dsc file ./*.dsc: No such file or directory

Oh ok, now I need to find out a solution for that as well as how to create a .dsc file for the source pulled from LP.

2010 January 8 [Friday]

bengaluru lug january meet

Here is an update on the Bengaluru LUG meetup tomorrow:

From, http://groups.google.com/group/ilug-bengaluru/browse_thread/thread/e276d78bb443394f

ILUG Bengaluru Meetup - Saturday 9th January 2010

Time:  1630 Hrs onwards.

       ThoughtWorks Technologies
       2nd Floor, Tower C, Corporate Block,
       Diamond District, Old Airport Road


       Neo Freerunner

               - state of neo freerunner/ open hardware
               - state of the software/firmwares openmoko/android etc.
               - personal experiences of various users

       Anything goes session

       Will be an unstructured/open format meetup.

Regular Activities:

       GPG keysigning - http://www.debian.org/events/keysigning

For newcomers

The meet itself will last ~1-2hrs, but usually a smaller group tends to move
to other locations for extended discussions which can potentially last until
way past dinner :-)


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