/dev/loki

Speaking of Packman mirrors...

2012-05-06T02:59:00.001+02:00

Speaking of Packman mirrors... we're in a pretty sorry state regarding that so if you're aware of sites that do mirror Packman but never told us (I'm aware of the one at yandex.ru, have to get it on that mirror list), or if you can get in touch with some mirror sites near you or even on your continent to ask them to mirror Packman, please do.

They can then simply contact us on our mailing-list (that's packman followed by an "at" sign followed by "links2linux" and a dot and "de" -- grrr to spammers) and we'll get back to them with the details for rsync.

packman.inode.at mirror is down

2012-05-06T02:44:00.000+02:00

The Packman mirror at packman.inode.at is down. We don't know yet what happened nor whether it will be back up soon (or not).

In the mean time, please use another mirror in the mean time.

Here's a quick copy'n'paste one-liner you can put in a shell (konsole, gnome-terminal, xterm, urxvt, ...) as root to switch:

perl -p -i.old -e \
's,^(baseurl=).*(/suse/.+)$,${1}http://ftp.halifax.rwth-aachen.de/packman${2}, if /^baseurl=.*packman\.inode\.at.*/' \
/etc/zypp/repos.d/*packman*.repo

Packman haz buttcrackerz

2012-04-28T00:42:00.001+02:00

Bugtracker! I meant to say "bugtracker", I swear!

So, the oh so popular and useful Packman project finally has a proper bugtracker, how awesome is that? Yes, truckloads of awesome. More seriously, it was about time and I finally just decided to do it.

From now on, please use our bugtracker to submit bugs, package requests, etc..., rather than using the mailing-list, although the latter is still fine for discussions and such, obviously.

Using a bugtracker will make it a lot easier for everyone to keep up with what needs to be done, for the packagers to pick things to do when they're bored (hah! right... I had to look up that word in the dictionary), and to make it clear once more that we definitely need more packagers to join and help out.

One needs to create a user account to be able to file a bug/request, but that's quick and doesn't involve any pain. We cannot use openSUSE accounts (as on .opensuse.org), sadly.

In case you didn't notice from the links above, the URL of the Packman bugtracker is https://bugs.links2linux.org.

Collectd on openSUSE

2012-02-20T20:42:00.001+01:00

collectd is a very nice metrics collection daemon for Linux, *BSD and a few other Unix variants. Essentially, what it does is run in the background, record a lot of metrics about the system and store them into RRD, from which you can then visualize time graphs.

There are around 100 plugins, going from low level things such as CPU load, memory usage to application level metrics like MySQL slow queries, Apache access log, memcached, etc..., as well as the ability of writing your own plugins in many languages using a nice, well documented and stable API.

I'm maintaining the latest version of collect for openSUSE in the server:monitoring repository.

Finally finished to upgrade to the latest, 5.0.3 -- please test and report any issues either directly to me by email, or using our bug tracker.

openSUSE election platform 2011

2011-12-02T01:06:00.001+01:00

Yep, I'm running for the privilege of being on the openSUSE board again. Lots of fine candidates this time, which is pretty cool in its own right.

I finally managed to fill out the remaining bits of my election platform page, so if you're interested, please have a read -- yes, I know, it's long ;)

The short summary:

I care about the contributors, their environment, it must be a fun place where people feel comfortable, with friends
I care a lot about the people aspects of the project, probably even more so than for the technical bits
I believe that I have a few ideas on concrete things we (and specifically, but not only, the board) should get involved in

All that "I, I, I" comes quite tedious, to be honest, and I'm under the impression that I'm bragging around, which is something my inner beast is spanking me for, endlessly. But well, the whole purpose is specifically to explain what each candidate proposes so I guess it's fine.

So if you adhere to what I wrote there and/or if you trust me to do the right things, do vote for me -- don't think that oh well, I'll be elected anyway, if everybody thinks like that, I won't ;D

FOSDEM 2012: announcing the devrooms

2011-11-11T00:50:00.000+01:00

Just sent out the ack/nack emails for the developer rooms at FOSDEM 2012, the latter part always being pretty tough, but we have to make choices.

On the good side: here is the list of the devrooms for FOSDEM 2012.

Mind you, that list does not include the Distribution Miniconf, which will take place in two rooms during both days and will gather sessions, talks, ideas from many (mostly Linux) distribution projects.

gpodder 2 vs 3 in Packman

2011-11-08T02:06:00.000+01:00

The gpodder project introduced its new major release 3.0.0 today and, unfortunately, it seems like I didn't pay attention to the complete change announcement, as I just bumped the gpodder package in Packman to 3.0.0 (from 2.18).

Now, gpodder 3.0.0 does introduce a lot of changes, notably in the UI but also regarding its database format and requires migrating the database from 2 to 3. It doesn't seem to have all of the features of 2.20 either. So what happens is that when you just upgrade the gpodder package, you end up with something you don't necessarily want to use. At least as of now.

Upstream will still maintain the 2.x branch for quite a while, and gradually port features from 2 to 3 and, hence, it actually makes sense to do it differently. What I have done now is to revert the gpodder package at Packman to the 2.xx branch (and upgrade to 2.20 at the same time).

If you want to use gpodder 3.0.0, then just install the package gpodder3 instead: zypper or YaST2 will tell you to remove gpodder in order to do so, as you cannot have both installed at the same time (they have file conflicts).

Now, if, in between those changes, you already did the upgrade, do one of the following:

if you want to keep using 3.x: then run rpm -e gpodder && zypper install gpodder3 (as root)
if you want to go back to 2.x: then run rpm -e gpodder && zypper install gpodder (as root)

On a side note, please wait a couple of hours (after this blog post) before doing so, as our main repository server is only synced to some mirrors after 4 hours (after 1 hour for most though).

Sorry for the inconvenience.

Installing Perl Module RPMs on openSUSE

2011-11-06T23:02:00.000+01:00

The additional repository devel:languages:perl has quite a slew of Perl module packages in it (over 2000 at the time of writing).

Hence, if you are often using and requiring Perl modules, it makes a lot of sense to add it to your list of repositories, which you can do with the following command (as root):

zypper addrepo http://r.opensu.se/devel:languages:perl.repo

(if you wonder what r.opensu.se is, read up on it here: r.opensu.se).

A little known fact is that when building RPM packages, there is a post-build script that analyzes the files that are part of the resulting package in order to scan for Perl modules. For each of those Perl modules, it adds a Provides with the Perl name of that Perl module, with a specific notation which is like this: perl(Name::of::the::Perl::package).

As an example, if you need the Perl module Net::SMTP::SSL, you just need to do this:

zypper install 'perl(Net::SMTP::SSL)'

Note that you should indeed put that parameter to the zypper install command into quotes, as if you don't, bash will attempt to interpret the braces and give a syntax error.

Now, in this case, it is fairly simple, as the Perl module Net::SMTP::SSL is provided by the RPM package perl-Net-SMTP-SSL (at least on openSUSE/SLE), so you might have been able to derive the name of the RPM package from the name of the missing Perl module on your own. But that Perl module could very well be part of a package with a different name: for example, the Perl module Class::MOP is not in the RPM package perl-Class-MOP but in the RPM package perl-Moose (because it's part of the Moose CPAN module).

And a last little trick: if you only want to find out which RPM package(s) provides specific Perl modules, you may also use this:

zypper what-provides 'perl(Class::MOP)'

(Note that this one only works on repositories that you have in your list of active repositories, which you can see with zypper repos or zypper lr.)

Loop mount iso files without being root

2011-10-28T07:15:00.001+02:00

There is a rather convenient way to mount ISO files (CD/DVD images) onto a directory on Linux, which goes as follows:
mount -o loop,ro /path/to/image.iso /path/to/mountpoint
(where the mountpoint is a directory).

This method works very well, but has one essential drawback: you must be root in order to do that. So how do I get to do so as a regular user ?

A barely known alternative lies in fuseiso, which uses the FUSE filesystem in user-space layer to accomplish that.

In order to use it, you must install the package fuseiso, which is available with the openSUSE distribution, and from the release repository (e.g. for 11.4) as well as from the filesystems repository and OBS project:
zypper install fuseiso

Once that has been done (as root ;)), you can simply mount ISO files like this, without being root:
fuseiso /path/to/image.iso /path/to/mountpoint

Note that as an additional benefit, fuseiso also supports images in NRG, BIN, MDF and IMG (dd) format, as well as zisofs.

In order to unmount, simply use fusermount -u, e.g. like this:
fusermount -u /path/to/mountpoint

openSUSE 12.1 Beta testing

2011-10-03T10:21:00.000+02:00

So it's openSUSE 12.1 Beta 1 testing time !

Before filing new bugs, make sure you search for existing bugs first.

If you're as annoyed by Bugzilla's search interface as I am, you can use this page to search for 12.1 Beta 1 bugs: just type in keywords and done.

The page also has an opensearch descriptor in order to add 12.1 Beta bug search to the list of search engines in your favorite browser.

FOSDEM 2012: call for devrooms

2011-09-27T20:49:00.000+02:00

So here we go again, FOSDEM, the largest and coolest open source contributor event in Europe is prepping up for its 2012 edition.

I've just opened the Call for Developer Rooms, the deadline for submissions is 2011-10-27.

Other call-for-stuffs will open very soon (lightning talks, stands, main tracks).

http://counter.opensuse.org/link/

2011-08-31T23:17:00.000+02:00

Since quite a while, we're having those nifty countdown images for openSUSE, which we've used for releases as well as for the countdown to the openSUSE Conference.

One issue with it is that it does not ship a link to point to when clicked upon, obviously, as it is just a plain image (and no javascript nor flash). Well, if you have put that picture on your blog/site/pants, please consider surrounding it with a link that points to http://counter.opensuse.org/link/, and we will adapt that link (which is a plain HTTP redirect) accordingly over time (e.g. now it points to the openSUSE conference page, then it will point to the 12.1 release page, etc...).

To do that, if your HTML-foo isn't that high, just use this:

<a href="http://counter.opensuse.org/link/"><img src="http://counter.opensuse.org/small/"/></a>

opensu.se maintenance

2011-08-31T23:10:00.001+02:00

Marcus "darix" Rueckert, Detlef Reichelt and I are currently moving servers for all the domains that are hosted on opensu.se (including opensuse-community.org).

There might be a few hiccups during the transition phase (which is almost done ;)).

Oracle related packages for openSUSE

2011-08-28T02:27:00.000+02:00

Petr Vanek and I are maintaining some packages for openSUSE (and SLE) that build against the Oracle Instant Client libraries (I mean Oracle the database). Now, those libraries are not open source in any way, but are available from the Oracle TechNet website.

There are a few open source projects that are of interest, at least for people who have to work with the Oracle database, and we do package a few of them and Petr makes them available in his repository.

As of now, they're all built against version 10.2 of Oracle Instant Client, for openSUSE 11.3, openSUSE 11.4, Factory (snapshot) and SLE 11.

Packages include ocilib, perl-DBD-Oracle (the Oracle database driver for Perl), php5-pecl-oci8 (the Oracle database driver for PHP5), python-cx_Oracle (a Python module to access Oracle databases), ruby-oci8 (the... you got he picture, this time for Ruby), as well as tora and tora-svn.

Why would we package that stuff, as it is not open source ? Well, actually, the software that we package is open source, it's just that the shared libraries and C headers they require are not. Oh, and we do not redistribute the Oracle Instant Client library RPMs there. That is something you must get from Oracle by yourself.

On communication, cultural differences, and the openSUSE Conference

2011-08-27T16:42:00.001+02:00

Disclaimer: the next paragraphs may sound presumptuous, but they're not. I swear.

It has occurred to me, time and time again, that some people consider others as semi-gods. People who are highly active e.g. in open source projects, and are sometimes even regarded for their work. Well, it sucks.

I know that this has happened to me a few times (being seen as a semi-god, that is), and I hate it. Not only does it not have any ground for being, we're just folks like everyone else, and while hard and good work should be appreciated, and while a simple "thank you" is way too rare and rewarding, taking it to that level is a very-bad-thing (tm)

The main reason for it to be bad is that it breaks communication, it puts artificial barriers between people. Now, I can only speak for myself, but I want people to talk to me, to come to me, say hi, and have a chat about virtually anything, be it on the matter of the openSUSE project or not.

I like hearing about cultural differences, about experiences people make in their life, about funny and not-so-funny moments. I love spending time talking to people, especially "broken" people, who have gone through hard times (haven't we all ?), because they're full of life, full of content, even if it's sorrow. But hey, I like having a good time with happy people too ;).

But culture is often in the way of common sense and the ability to communicate across those artificial differences, specifically when we're talking about the differences in behavior and, well, yes, communication, precisely.

Generalization is always wrong (got it?), but there are a few traits that nevertheless apply in a very fuzzy way. Germans usually don't like physical contact, getting too much in their protective circle. They don't really like people who talk much either, or who behave in an extroverted way. Latins (French, Spaniards, Greeks, Italians, ...) often appear as sloppy, too relaxed, they don't take appointments seriously, they're always late, they're always talking, and loud, etc... Well hell yes. Asian cultures (in the broad geographic sense) are even more mind-boggling (to us Europeans, that is). North Americans are said to be quite vocal and easy to get in touch with, but don't appreciate digging a little deeper. Germans say things pretty straight as they are ("this sucks" is often perfectly acceptable). All those differences, all those barriers to understanding what we say to each other, and how we mean it.

At the openSUSE Conference or wherever we may meet, or even through electronic media, drop those differences, don't bother, say things straight up as they are, but be relaxed, have a good time, be vocal, talk, say what's on your mind. Don't be afraid to hurt feelings, you won't, because we're all a big happy (and sometimes grumpy) bunch of friends. Feel at home, this is your community. I am your friend. Poke me with a stick, give me a hug, talk to me out of the blue, whatever, slice me into pieces and put salt on it (that's a special for Alberto), I don't care. But don't remain silent, intimidated, blocked by your cultural background and, at the same time, be inclusive and accept those differences, to a certain extent (full circle or chicken/egg ?).

See you there, or anywhere else, and give me a hug, or at least a high five ;).

My talks at the openSUSE Conference 2011

2011-08-27T16:12:00.000+02:00

Big mistake, big mistake. At the call for papers deadline, we ended up with not having any sessions about packaging at all except one by Jan Engelhardt.

Now, that would have been quite a ludicrous situation, as our core activity is precisely to build packages, without which it wouldn't be a distribution in the first place.

So I picked up an early email from Lars Vogdt who proposed a few sessions on the topic of packaging. Unfortunately, it was really early in the call for papers phase and we weren't quite organized yet, which caused his proposal to remain unanswered for a few weeks. I tried to contact him by email a few times, but he didn't reply (until now, that is), and I nevertheless took it up on myself to do a few packaging related sessions at the conference.

Introduction to Packaging

One thing that some people in the project have been bugging (me) about on a regular basis is an introductory presentation about packaging for openSUSE. Having been doing that for around 10 years on an almost daily basis, I can indeed understand that it appears as a daunting task and somewhat of a black art (which it is).
So here we go: Introduction to Packaging (Sunday 11 Sept in Brendl, at 11:45). The key here is that I am not assuming any prior knowledge at all. If you're already versed into packaging, this isn't for you. But if you always wanted to know about the main activity of our project, at least in technical terms, you totally have to be there.

Mind you, after that presentation, you will not be able to write your first package, but it will give you an understanding of what packages actually are, the terms, the ecosystem, the process, the toolchains and... well... what the hell it actually takes to create an RPM package for openSUSE. It does sound boring, and too technical, but it isn't. Trust me, we'll have a good time. I'm looking forward to seeing a lot of folks there with an appetite for finding out, and a lot of questions I'll more than happily be able to answer.

Workshops

Obviously, we're not going to stop there. For those who will have attended the above mentioned presentation, as well as for the folks who have a fuzzy idea of how to build packages, but have never actually tried to do so (or did but failed), there is something for you as well: Packaging, hands-on: on Monday, in the BR-Room, at 14:00, I will guide you for two hours through your first steps at accomplishing what is next to witchcraft: building your first package, on your own, on your notebook.

The purpose here is to take every fear away at barriers to enter the secret cult of RPM wizardry. So bring along your notebook, a shell, vim or whatever editor you prefer, an openSUSE Build Service account (go to this mind-boggling URL to create an openSUSE account if you don't have one already -- if you have an openSUSE account, you have everything you need), and we'll do it step by step, slowly, to bring you to the overwhelming feeling of joy once you will have your first (and hopefully not last) RPM package for openSUSE on your harddisk.

Upping the ante

Can we do even better than that? Sure, we can. On Tuesday, there will be a second workshop session: Advanced Packaging, at 14:00 in the BR-Room. That one will be a bit more improvised, but we'll take on more complex scenarios, depending on what we will not have covered in the previous workshop. Things like subpackages, -devel packages, distribution integration, shared library packages (and the openSUSE packaging guidelines that apply to them), packaging Perl modules, Python modules, etc...

And the rest...

There are quite a few additional sessions that have my name on it, but I won't be able to organize those as well. So I'm looking for people to take them on.

Oh, and please bug me at the conference. I'm tall, and look evil, and can be evil at times, I have a creepy looking G+ profile photo (on purpose, I like it), but I don't bite, I don't pose, I'm a rather nice guy. As I'm not German, I don't mind hugs either, much like our all around nice guy from the flat of the land.

I've been in this project for a very long time, been involved in various bits of it, and have quite some experience in several technical (and not so technical) areas. I hope we'll be able to un-organize some small sessions on various matters you'd like to know more about, I'm sure I can help, and I totally want to spread my experience around. This conference is YOUR conference, so make the most of it (want to stress that so much that I even adhere to the bad practice of using <b/> tags in HTML). Drop your cultural habits for a few days, don't be shy, let's talk, have some beers (or water), get to know each other and, most importantly, have a lot of fun.

So, hopefully, see you there!

Back from FrOSCon

2011-08-22T23:16:00.000+02:00

Back from the FrOSCon conference (the only one that has even weirder capitalization than openSUSE ;D).
Mixed feelings. While it was a bit boring during the day as there was pretty much no one passing by the stands (not just ours), I'm not really convinced it's that useful to have a stand there... Of course, the great weather didn't help, as most non-contributor-people who would might have come to the conference out of curiosity will most definitely have preferred making good use of the sunny weather that weekend. Understandable :)

Mind you, I definitely had a good time, as the organization is very well done, the catering is nice (at least for speakers and booth personnel, didn't try the other options), the barbecue with DJ on Saturday evening was excellent, and, of course, I got to see quite a lot of people I know through openSUSE and FOSDEM (quite a lot of people wearing the ultimate street cred t-shirt of FOSDEM supporters, btw ;)), and a few I didn't. Got to chat a lot with core Mageia contributors as well, which was definitely fun and interesting. Hence, lots of great FOSS people around, awesome.
Was obviously also great in the evening/night, chatting around beers (even if it was Kölsch (yellow water with a tiny bit of alcohol and some bitter)) with fellow contributors across different projects. Also got to meet Jan Krings for the first time (as well as Marcus Möller, Jan Krings and Jan Weber, which I've met IRL before).

If you've never been at such events (even more striking at FOSDEM methinks, because there's a huge crowd, with lots and lots of projects there, and a lot of discussions and cross-pollination going around), and are mostly on the "user" side of things, then just stop the hate. Forget about distrowars, competition, and all that. That's just totally not how it works for almost all the people who actively contribute to their projects. Even between BSD and Linux. We may have our differences and preferences, but we all respect the work, brains, excellence, and love everyone is putting into their respective undertakings.

But in terms of audience, I wonder whether FrOSCon shouldn't have a sharper focus. At least, the focus wasn't all that clear to me, it seems like the target is "everything". There are stands of distribution projects, which are typically for the non-Linux/BSD-users-yet to grab some DVDs and play with it. There are stands of vendors, who pay for their stand, and whom are either selling books, or showcasing their services and solutions to potential customers, or hunting for highly qualified hackers. That's a pretty different audience already, at least when compared to the more entry-level distribution showcase stands. Then there are tracks and "devrooms" (yes, they really call them the same as at FOSDEM :)), which is .. dunno.. depends, some did sound more advanced, for developers, and some were a lot more entry level (e.g., paraphrasing, "openoffice.org is open source, what does that mean for me, user ?").

Just my 2 cents, but I'm under the impression that it could serve a better purpose to be less general purpose and have a slightly sharper focus in terms of target audience. But hey, maybe it was just the weather (heard from others, e.g. from fellow openSUSEr Jan Weber) that there were clearly a lot more people the years before), and maybe the organizers are just fine with the amount and type of audience that was there.

i.opensu.se YMP Generator

2011-08-16T02:04:00.001+02:00

Bernhard Wiedemann approached me a few days ago to host his YMP generator CGI script on opensu.se.

I wrote it from scratch (it's just a few lines of Perl code really ;)), and it's now up and running on i.opensu.se (follow that link for details and explanation).

In a similar fashion to r.opensu.se, it is meant to be helpful to give support to users, as it is much simpler to hand them a short URL like http://i.opensu.se/utilities/atool than going through the hassle of guiding them through YaST2.

It is especially well suited for twitter, IRC, etc...

The source code is in my git repo at gitorious.

Countdown for openSUSE Conference 2011

2011-08-08T00:50:00.000+02:00

Hacked up some quick artwork for a countdown image for the openSUSE Conference 2011.

If you want to use it on your blog, website, whatever, use the following links to the image:

Large (400x400 pixels): http://counter.opensuse.org/conf/2011/large
Medium (256x256 pixels): http://counter.opensuse.org/conf/2011/medium
Small (130x130 pixels): http://counter.opensuse.org/conf/2011/small

If you don't like the artwork, patches are welcome ;)

Obviously, the number of remaining days is updated every day and, hence, that countdown is always up-to-date (it is relative to the CEST timezone though, where the event takes place).

Off to Croatia!

2011-07-04T22:22:00.000+02:00

I'll be enjoying the nice seaside of Dalmatia (Croatia) for the next 3 weeks and, hence, won't be updating packages or be otherwise reachable to fix stuff.

That being said, I really haven't been very active (to say the least) the last few weeks. Lost the moment(um), somehow. Dunno. Maybe the motivation problem will have fixed itself after my holidays. I sure hope so.

For really urgent matters, a few people in the openSUSE and FOSDEM projects have my phone number, just poke the right people ;), e.g. Andreas Jaeger.

I most probably won't be checking my email, but I should be tweeting, so that's an option to poke me as well.

What's an orig-addon ?

2011-05-14T16:15:00.000+02:00

Funny question eh? :)

Let me take a step back first. There are quite a few packages that the openSUSE project cannot publish on their main infrastructure, not because of legal reasons, but for reasons of potential software patent infringements. That, combined with the fact that the main sponsor of the openSUSE project (Attachmate, formerly Novell) also sponsors almost all the IT infrastructure, the fact that Attachmate (and Novell before them) is a business in the USA, and that the USA has the most ludicrous legal precedents regarding software patents (hey, the market regulates itself, right ?), puts us into such a situation. It isn't different for most other distributions by the way, except for a very few which probably only get away with it because they remain rather small and under the radar.

What am I talking about? Well, packages such as gstreamer-0_10-plugins-bad, MPlayer, vlc, xine, libmad, etc... Typically because they contain implementations of multimedia codecs such as for MP3 or H.264 which are heavily covered with software patents.

The Packman project and repository provides many of those packages (amongst other things) for openSUSE, hosted in a country where software patents do not apply. Now, don't confuse software patents and copyright: copyright is well established, precise and there are no groups of people on the planet who respect copyright more than open source and Free software developers, specifically because copyrights such as the GPL, BSD or ASL (to name just a few) protect our work and our ideals. Hence, what we are doing is not illegal in any way. As an example, the mad library might be subject to software patent infringement where applicable, but is under the GPL.

Okay, now back to the actual topic. The libraries of the gstreamer framework are maintained by several contributors of the openSUSE project in the multimedia:libs project in our famous openSUSE Build Service. However, as explained above, the download repositories of multimedia:libs may not host the packages that might infringe on software patents (where applicable). So what we are doing, is to link those packages on our Build Service instance at Packman (yes, the Build Service can do that, awesome feature :)). The difference is that on Packman, due to some macros, we do build those parts that potentially infringe on software patents, and also host them in our repository and its mirrors. The trick is that they're subpackages that end in "-orig-addon". For example, for the package "gstreamer-0_10-plugins-bad", its companion is "gstreamer-0_10-plugins-bad-addon-orig" (yes, I agree, the suffix "orig-addon" is stupid, too "geeky" and not intuitive in any way.)

So, to see whether you have those installed, first open a shell as root, then do the following:

zypper search orig-addon

It will probably result in something like this:

In order to install those bits, do the following:

zypper install gstreamer-0_10-plugins-bad-orig-addon gstreamer-0_10-plugins-ugly-orig-addon

and you're done :)

On a side note: if those results don't show up when doing the search, then add the Packman repository with the following command and try again:

zypper ar -r http://r.opensu.se/packman.repo

openSUSE Conference 2011, first program commitee meeting

2011-04-22T02:27:00.000+02:00

I'm part of this year's openSUSE Conference program committee, in order to bring in some of my experience with organizing the awesome FOSDEM conference ;)

So we had our first program committee meeting today, and the summary is available on the wiki, on the forums and the opensuse-project mailing-list.

Workaround for Eclipse Helios JVM crashes

2011-04-17T20:27:00.001+02:00

You might run into this too: when using Eclipse Helios (3.6.2 here), it sometimes crashes on an alleged double free in the JVM, detected by glibc.
That's actually a feature of glibc that serves to detect bugs and security issues, which kills a process that tries to free a previously allocated memory area that has already been freed.

In this case, however, it is most probably a false positive, but glibc still decides to kill the process.

The workaround is to run Eclipse with the environment variable MALLOC_CHECK_ set to 0. There are several ways to achieve this:

when you run eclipse from a shell, run it like this:
MALLOC_CHECK_=0 eclipse
if you prefer to just run eclipse or by clicking on an icon, create the following file in your $HOME/bin, e.g. like this (just copy/paste into a shell):
cat<<EOF >"$HOME/bin/eclipse"
#!/bin/bash
export MALLOC_CHECK_=0
exec /usr/bin/eclipse "$@"
EOF
chmod 0755 "$HOME/bin/eclipse"

Note that with the latter option, you obviously need to adapt the fully qualified path to the eclipse script depending on how and where you installed it. If it comes from RPM packages, than /usr/bin/eclipse is fine. If, like me, you downloaded the tarball from eclipse.org and unpacked it somewhere under your home, you must change it accordingly -- e.g. to $HOME/apps/eclipse/eclipse

In any case, you should NOT add export MALLOC_CHECK_=0 to your ~/.profile or ~/.bashrc as that would turn off that glibc check for ALL the applications and processes you would run. And that's a bad idea.

Canterbury Rolling Application Platform

2011-04-01T07:58:00.000+02:00

Following the announcement of the Canterbury distribution, there has been a lot of work about this in the background too. In order to provide developers with the easiest framework to package with, we are pleased to announce the availability of the Canterbury Rolling Application Platform.

No more tedious packaging, upstream won't have to deal with the idiosyncrasies of distributions any more. Just write your source code, use our framework, and it will automagically be turned into a craplet, which is the new name for artifacts in our distributed platform. It will just fly!

Unlike all efforts of packaging and distribution, our approach is truly revolutionary and provides instant and effortless scalability for the cloud through virtualization of provisioning for horizontal and vertical growth of your business.

At the center of this revolutionary platform lies our secret sauce, Publish Organic in the Open, which will enable you to quickly push out your stuff into the wide world of users of the new Canterbury Rolling Application Platform.

aprfoo@feci.es$ make_poo --dist=loo LibreOpenOffice
Preparing upstream organic ... [DONE]
Building craplet loo.crap ... [DONE]
Flushing buffers ... [DONE]
Pushing to canterbury.org ... [DONE]
Finishing up. Congratulations, your CRAP is flying at the loo !

We are expecting big vendor support behind this effort, with HP, Oracle, IBM and probably also Microsoft, as it would only be a natural fit for their .NET platform.

It is obviously written in Python (significant whitespace fits in naturally with our philosophy) and will be available in git repositories soon.

How to use tin to read the openSUSE Forums

2011-03-11T13:49:00.000+01:00

The openSUSE forums also support the NNTP protocol (usually referred to as "news"). There are plenty of GUI news readers out there (thunderbird, knode, pan, ...), but as I'm using mutt to read my emails as well as irssi for IRC in screen sessions (in urxvt, I wanted a console based NNTP client for that as well. (No, I don't use lynx or w3m for web browsing, I'm not a masochist ;).)

Hence I installed trn.

Here is how to set it up to access the openSUSE forums with it:

Obviously, first install trn:
zypper install trn
then run rtin once, which will give you an error message and exit, but that will create its configuration file tree in ~/.tin:
rtin
next, edit the configuration file ~/.tin/newsrctable and add the following line:
forums.opensuse.org /home/XXX/.tin/foo foo
(where you replace /home/XXX with your actual home directory)
If you are not fluent with text editors, you can also simply execute the following command from a shell (just copy/paste it):
echo "forums.opensuse.org $HOME/.tin/foo foo" >> ~/.tin/newsrctable
now we can actually run rtin to connect to the openSUSE forums:
rtin -a -g foo
(note that the -a flag turns on color support, and -g foo tells rtin to connect to the server we configured as "foo" in ~/.tin/newsrctable)
you are now greeted with an (almost) empty screen: press the y key (yank in/out) to get a list of all the forums in order to subscribe to those that are of interest to you: simply use the arrow keys to scroll the list and press the s key (subscribe) to subscribe those you want to follow