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Development: Rodrigo Siqueira (Debian), GLib, Code with Google, PSF GSoC, LLVM's RISC-V Compiler, GammaRay 2.11.0 Release, Fedora Women’s Day

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  • Rodrigo Siqueira: Status Update, June 2019

    For a long time, I’m cultivating the desire of getting the habit of writing monthly status update; in some way, Drew DeVault’s Blog posts and Martin Peres advice leverage me toward this direction. So, here I’m am! I decided to embrace the challenge of composing a report per month. I hope this new habit helps me to improve my write, summary, and communication skills; but most importantly, help me to keep track of my work. I want to start this update by describing my work conditions and then focus on the technical stuff.

    The last two months, I have to face an infrastructure problem to work. I’m dealing with obstacles such as restricted Internet access and long hours in public transportation from my home to my workplace. Unfortunately, I cannot work in my house due to the lack of space, and the best place to work it is a public library at the University of Brasilia (UnB); go to UnB every day makes me wast around 3h per day in a bus. The library has a great environment, but it also has thousands of internet restrictions, for example, I cannot access websites with ‘.me’ domain and I cannot connect to my IRC bouncer. In summary: It has been hard to work these days. So, let’s stop to talk about non-technical stuff and let’s get to the heart of the matter.

    I really like to work on VKMS, I know this isn’t news to anyone, and in June most of my efforts were dedicated to VKMS. One of my paramount endeavors it was found and fixed a bug in vkms that makes kms_cursor_crc, and kms_pipe_crc_basic fails; I was chasing this bug for a long time as can be seen here [1]. After many hours of debugging I sent a patch for handling this issue [2], however, after Daniel’s review, I realize that my patch does not correctly fix the problem. Daniel decided to dig into this issue and find out the root of the problem and later sent a final fix; if you want to see the solution, take a look at [3]. One day, I want to write a post about this fix since it is an interesting subject to discuss.

    Daniel also noticed some concurrency problems in the CRC code and sent a patchset composed of 10 patches that tackle the issue. These patches focused on creating better framebuffers manipulation and avoiding race conditions; it took me around 4 days to take a look and test this series. During my review, I asked many things related to concurrency and other clarification about DRM, and Daniel always replied with a very nice and detailed explanation. If you want to learn a little bit more about locks, I recommend you to take a look at [4]; serious, it is really nice!

  • g_clear_signal_handler() in GLib 2.61.1

    It’s been a long time since I’ve blogged, so I thought I’d do a quick series on new APIs in the upcoming 2.62 release series of GLib.

    Today, it’s the g_clear_signal_handler() function added by Marco Trevisan. This is a simple helper function along the same lines as g_clear_pointer(), g_clear_error() and g_clear_handle_id(). Given a GObject and a signal handler ID, it disconnects the signal handler and clears the signal handler ID variable to zero.

  • Code with Google helps more students learn to code

    Melissa Schonig is a fifth-grade English and Language Arts (ELA) teacher at Lynhaven Elementary School where 40-50 percent of students are Latino, and many don’t have access to computers at home. She didn’t know much about computer science, but wanted her students to get familiar with coding because it can help with other skills, such as critical thinking and collaboration. So she tried a CS First activity where students coded different endings to the story they read in class. Melissa says that, in a short time, “the kids were problem solving, troubleshooting, and helping one another. It was incredible to hear the conversations about coding and the other concepts we were learning in the room.”

  • ‘Code With Google’ Offers Free Programming Lessons For Kids

    Programming is a crucial skill necessary for kids who are stepping into an increasingly software-driven world. However, the training resources required to learn coding aren’t readily available to everyone.

    To bridge this gap, Google has launched ‘Code With Google‘ — an educational resource that will help school teachers to teach the basics of programming to students.

  • PSF GSoC students blogs: Week 6: Client side and OOP

    I worked on client side by migrating functions written in basemap and creating the instance of topview to generate plot in cartopy

  • PSF GSoC students blogs: Weekly check in [week 6 - 01/07 - 07/07]
  • LLVM's RISC-V Compiler Back-End Looks To Go Official For 9.0 Release

    LLVM's RISC-V CPU back-end has made immense progress over the past few years and now for the LLVM 9.0 release due out at the end of August or early September could become official.

    The RISC-V compiler back-end currently within the LLVM tree has been treated as "experimental" but for the in-development 9.0 release it could become an "official" back-end. Alex Bradbury who maintains this RISC-V code has requested this official status change.

  • GammaRay 2.11.0 Release

    We have released version 2.11.0 of our Qt application monitoring tool GammaRay. GammaRay allows you to observe behavior and data structures of Qt code inside your program live at runtime.

    GammaRay 2.11 comes with a new inspection tool for Qt’s event handling, providing even more insights into the inner working of your application. Besides looking at the events and their properties as they occur the event

  • Start developing LibreOffice! Download the source code, and build on Windows [Ed: Mike Saunders of LibreOffice has just asked people to get proprietary software from Microsoft to get involved in LibreOffice]
  • Call for Fedora Women’s Day 2019 proposals

    Fedora Women’s Day (FWD) is a day to celebrate and bring visibility to female contributors in open source projects, including Fedora. This event is headed by Fedora’s Diversity and Inclusion Team.

    During the month of September, in collaboration with other open source communities, women in tech groups and hacker spaces, we plan to organize community meetups and events around the world to highlight and celebrate the women in open source communities like Fedora and their invaluable contributions to their projects and community.

    These events also provide a good opportunity for women worldwide to learn about free and open source software and jump start their journey as a FOSS user and/or a contributor.  They also provide a platform for women to connect, learn and be inspired by other women in open source communities and beyond. 

More in Tux Machines

LibreOffice 6.4 Alpha1 is ready for testing

The LibreOffice Quality Assurance ( QA ) Team is happy to announce LibreOffice 6.4 Alpha1 is ready for testing! LibreOffice 6.4 will be released as final at the beginning of February, 2020 ( Check the Release Plan ) being LibreOffice 6.4 Alpha1 the first pre-release since the development of version 6.4 started in the beginning of June, 2019. Since then, 4600 commits have been submitted to the code repository and more than 720 bugs have been set to FIXED in Bugzilla. Check the release notes to find the new features included in this version of LibreOffice. Read more

Events: Cloud Foundry Summit, OpenSUSE Asia and FSFE System Hackers

  • The Importance of Culture in Software Development

    A few weeks ago at Cloud Foundry Summit, I had the chance to grab a few of our partners and talk about how culture plays a part in the software development process. While appropriate tools are very important, it is only part of the story. Culture will make or break any change initiative regardless of how amazing our technology is.

  • openSUSE Asia Summit

    I met Edwin and Ary earlier this year at the openSUSE Conference in Nuremberg. They invited me to come to the openSUSE Asia Summit happening in Bali. I wasn't sure that I would be able to attend it. But then, around June I saw a tweet reminding about the deadline for the Call for Proposal for the openSUSE Asia Summit and I thought maybe I should give it a try. I submitted a workshop proposal on MicroOS and a lightning talk proposal to the openSUSE Asia CFP team. Both were accepted and I couldn't be happier. It gave me the chance to meet friends from the openSUSE community again, learn and share more. We do not have direct flights to Indonesia. I traveled through Air Mauritius to Kuala Lumpur and then Malaysia Arlines to Denpasar, Bali. I spent almost 24 hours traveling before reaching my hotel in Jimbaran. I was totally knackered when I arrived but the enthusiasm of being there for the summit was stronger than anything. I booked a taxi through Traveloka ahead of my arrival in Bali. It was recommended by Edwin. When I compared other taxi fares I felt glad I booked it online. I also bought a SIM card on my way to the hotel with a 6GB data package. I knew we'd all communicate mostly on Telegram, just as we did for oSC 2019. My hotel WiFi connection wasn't great but I was impressed by the 4G coverage of my mobile Internet provider, XL Axiata. Mobile connectivity was extremely helpful as I would rely on GoJek car-hailing for the next few days.

  • The 3rd FSFE System Hackers hackathon

    On 10 and 11 October, the FSFE System Hackers met in person to tackle problems and new features regarding the servers and services the FSFE is running. The team consists of dedicated volunteers who ensure that the community and staff can work effectively. The recent meeting built on the great work of the past 2 years which have been shaped by large personal and technical changes. The System Hackers are responsible for the maintenance and development of a large number of services. From the website’s deployment to the mail servers and blogs, from Git to internal services like DNS and monitoring, all these services, virtual machines and physical servers are handled by this friendly group that is always looking forward to welcoming new members.

GNU Parallel Released and 10 Years of GNU Health

  • GNU Parallel 20191022 ('Driving IT') released [stable]

    GNU Parallel 20191022 ('Driving IT') [stable] has been released. It is available for download at: No new functionality was introduced so this is a good candidate for a stable release. GNU Parallel is 10 years old next year on 2020-04-22. You are here by invited to a reception on Friday 2020-04-17.

  • GNU Health: 10 years of Freedom and Equity in Healthcare

    I am back from my trip to India, where I spent a week with the team of All India Institute of Medical Sciences – AIIMS –, the largest public hospital in Asia and a leading research institution. They have taken the decision to adopt GNU Health, the Free Hospital and Health Information System. One key aspect in Free Software is ownership. From the moment they adopted GNU Health, it now also belongs to AIIMS. They have full control over it. They can download and upgrade the system; access the source code; customize it to fit their needs; and contribute back to the community. This is the definition of Free Software. The definition of Free Software is universal. GNU Health is equally valid for very large institutions, national public health networks and small, rural or primary care centers. The essence is the same.

Programming Leftovers

  • NumFOCUS and Tidelift partner to support essential community-led open source data science and scientific computing projects

    NumFOCUS and Tidelift today announced a partnership to support open source libraries critical to the Python data science and scientific computing ecosystem. NumPy, SciPy, and pandas—sponsored projects within NumFOCUS—are now part of the Tidelift Subscription. Working in collaboration with NumFOCUS, Tidelift financially supports the work of project maintainers to provide ongoing security updates, maintenance and code improvements, licensing verification and indemnification, and more to enterprise engineering and data science teams via a managed open source subscription from Tidelift.

  • Python Plotting With Matplotlib

    A picture is worth a thousand words, and with Python’s matplotlib library, it fortunately takes far less than a thousand words of code to create a production-quality graphic. However, matplotlib is also a massive library, and getting a plot to look just right is often achieved through trial and error. Using one-liners to generate basic plots in matplotlib is relatively simple, but skillfully commanding the remaining 98% of the library can be daunting.

  • Nominations for 2019 Malcolm Tredinnick Memorial Prize

    Malcolm was an early core contributor to Django and had both a huge influence and large impact on Django as we know it today. Besides being knowledgeable he was also especially friendly to new users and contributors. He exemplified what it means to be an amazing Open Source contributor. We still miss him. The DSF Prize page summarizes the prize nicely: The Malcolm Tredinnick Memorial Prize is a monetary prize, awarded annually, to the person who best exemplifies the spirit of Malcolm’s work - someone who welcomes, supports and nurtures newcomers; freely gives feedback and assistance to others, and helps to grow the community. The hope is that the recipient of the award will use the award stipend as a contribution to travel to a community event -- a DjangoCon, a PyCon, a sprint -- and continue in Malcolm’s footsteps.

  • Dirk Eddelbuettel: pkgKitten 0.1.5: Creating R Packages that purr

    This release provides a few small changes. The default per-package manual page now benefits from a second refinement (building on what was introduced in the 0.1.4 release) in using the Rd macros referring to the DESCRIPTION file rather than duplicating information. Several pull requests fixes sloppy typing in the, NEWS.Rd or manual page—thanks to all contributors for fixing these. Details below.