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Romain Perier: My work on Debian (April 2019)
This is a summary of what I have done in April 2019 on Debian
Changes
- I have uploaded raspi3-firmware 1.20190215-2 to sid
- I have bumped raspi3-firmware to 1.20190401-1
- I have bumped the preempt_rt kernel to 4.19.37-rt19 in sid
- I have bumped the experimental kernel to 5.0.7
- I have bumped the experimental preempt_rt kernel to 5.0.7-rt5
- I have bumped the experimental kernel to 5.0.8
- I have bumped the experimental kernel to 5.0.9
- I have bumped the experimental kernel to 5.0.10
- I have removed extra binary files from the orig tarball in raspi3-firmware, this closes #924315
- I have enabled support for the coreboot memconsole in kernel 5.0.x. It has been backported into sid and should be part of buster. This closes bug #872069
Joachim Breitner: Drawing foldl and foldr
Often, someone wants to exhaling the difference between a left-fold and a right-fold, i.e. foldl and foldr in Haskell, you see a picture like the following
foldl and foldr
This is taken from the recently published and very nice “foldilocks” tutorial by Ayman Nadeem, but I have seen similar pictures before.
I always thought that something is not quite right about them, in particular the foldr. I mean, they are correct, and while the foldl one clearly conveys the right intuition, the foldr doesn’t quite: it looks as if the computer would fast forward to the end of the list, and then start processing it. But that does not capture the essence of foldr, which also starts at the beginning of the list, by applying its argument lazily.
And therefore, this is how I would draw this graph:
foldl and foldr
This way (at least to people from a left-to-right top-to-bottom culture), it becomes more intuitive that with foldr, you are first looking at an application of the combinator to the first element, and then possibly more.
Mike Gabriel: My Work on Debian LTS/ELTS (April 2019)
In April 2019, I have worked on the Debian LTS project for 11.5 hours (of 17.25 hours planned, pulling over 5.75 hours to the next month) and on the Debian ELTS project for another 10 hours (of 10 hours planned) as a paid contributor.
LTS Work- Upload to jessie-security: libssh2 (DLA-1730-2 [1], regression fix)
- Upload to jessie-security: poppler (DLA-1752-1 [2])
- Upload to jessie-security: samba (DLA-1754-1 [3])
- Upload to jessie-security: systemd (DLA-1762-1 [4])
- Upload to jessie-security: systemd (DLA-1762-2 [5], regression fix)
- Help fixing sbuild in Debian 10, so it still supports building packages for Debian wheezy. (See Debian bug #926161 [6])
- Upload to wheezy-lts: cron (ELA-103-1 [7])
- Upload to wheezy-lts: samba (ELA-104-1 [8])
- Also build cron arch:i386 for wheezy-lts and update README.how-to-release-an-update.
- Upload to wheezy-lts: systemd (ELA-115-1) [9]
- [1] https://lists.debian.org/debian-lts-announce/2019/04/msg00006.html
- [2] https://lists.debian.org/debian-lts-announce/2019/04/msg00011.html
- [3] https://lists.debian.org/debian-lts-announce/2019/04/msg00013.html
- [4] https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html
- [5] https://lists.debian.org/debian-lts-announce/2019/04/msg00026.html
- [6] https://bugs.debian.org/926161
- [7] https://deb.freexian.com/extended-lts/updates/ela-103-1-cron/
- [8] https://deb.freexian.com/extended-lts/updates/ela-104-1-samba/
- [9] https://deb.freexian.com/extended-lts/updates/ela-115-1-systemd/
Ben Hutchings: Debian LTS work, April 2019
I was assigned 17.25 hours of work by Freexian's Debian LTS initiative and carried over 14 hours from March. I worked all 31.25 hours this month.
I uploaded firmware-nonfree with Emilio Pozuelo Monfort's changes, and issued DLA-1747-1.
I made a stable update to Linux 3.16 (3.16.65) and rebased the Debian package on top of this. I built and uploaded packages for testing, to reduce the risk of an uncaught regression in the next update to jessie. I prepared the next stable update (3.16.66), which is currently out for review.
I merged changes from stretch's linux package into linux-4.9, and from linux-latest into linux-latest-4.9. I built and uploaded these and prepared a DLA. However, linux-4.9 is currently waiting in the NEW queue because it includes an ABI bump.
Junichi Uekawa: Abdication and ascention to the Chrysanthemum Throne.
Jonathan Carter: Free Software Activities (2019-04)
April is over and winter is here and things are getting gloomy, but that doesn’t stop surfers from heading out into the ocean (photo taken at Muizenberg surfer’s corner, Cape Town).
Debian package work
2019-04-04: Work on gamemode (1.3.1-1) update.
2019-04-04: Upload new upstream version of tetzle (2.1.4+dfsg1-1) to debian unstable.
2019-04-04: Upload gnome-shell-extension-dashtodock (66-1~exp2) to debian experimental.
2019-04-04: Upload connectagram (1.2.9-5) to debian unstable.
2019-04-06: Upload kpmcore (3.3.0-5) to debian unstable.
2019-04-08: Non-maintainer upload of plymouth (0.9.4-1.1) to debian unstable.
2019-04-15: Upload desktop-base (10.0.2) to debian unstable.
2019-04-15: File unblock request for desktop-base (10.0.2).
2019-04-15: File unblock request for calamares-settings-debian (10.0.19-1).
2019-04-15: File unblock request for live-config (5.20190312).
2019-04-16: File bug against live media having a stale /etc/fstab file causing problems (#927216).
2019-04-16: File bug against live media having duplicate sources.list entries (#927216).
2019-04-16: File bug against amdgpu not working on debian live systems (#927219).
2019-04-24: Upload new upstream version of btfs (2.19~exp1) to debian experimental.
2019-04-24: Upload new upstream version of calamares (3.2.5-1~exp1) to debian experimental.
2019-04-25: Upload new upstream version of gnome-shell-extension-workspaces-to-dock (50-1~exp1) to debian experimental.
2019-04-29: Upload new upstream version of calamares (3.2.7-1~exp1) to debian experimental.
2019-04-29: Upload new upstream version of gnome-shell-extension-multi-monitors (18-1~exp1) to debian experimental.
Debian package review and sponsoring
2019-04-04: Comment on cuba (4.2-1) (mentors.debian.net request).
2019-04-05: Quick review on siconos (4.2.0+git20181026.0ee5349+dfsg.2-1), forward request to debian-science team (mentors.debian.net request).
2019-04-09: Review siconos (4.2.0+git20181026.0ee5349+dfsg.2-1), needs some work (ftbfs) (mentors.debian.net request).
2019-04-10: Sponsor siconos (4.2.0+git20181026.0ee5349+dfsg.2-1) for debian unstable (mentors.debian.net request).
Debian QA
2019-04-11: Build fresh Debian live ISOs for testing.
2019-04-11: Test Debian Live ISOs for full-disk encryption from calamares, bootsplash themes and plymouth themes.
2019-04-13: Build fresh Debian live ISOs for testing.
2019-04-13: Test Debian Live ISOs for recent fixes.
2019-04-13: Blog entry: Help test Debian Live.
Debian community
2019-04-21: Schedule a Debian town hall meeting “Meet the new DPL and ask him anything!“.
DebConf
DebConf bursaries took out a whole lot of time towards the end of the month, I didn’t manage to log activity for this, but plan to write a lot of documentation for this process when all the essential (and time-critical) work has been completed.
Elana Hashman: PyCon 2019 Talk Resources
At PyCon US in 2019, I reprised my talk "The Black Magic of Python Wheels", originally presented at PyGotham 2018. I based this talk on my three years of work on auditwheel and the manylinux platform, hoping to share some dark details of how the proverbial sausage is made.
After this talk, I will be retiring from auditwheel maintainership.
The Black Magic of Python Wheels- Talk page, PyCon website
- Talk video: not yet posted
- Talk slides (pdf download)
- pythonwheels.com
- Simple manylinux wheelbuilding demo
- Linux Programmer's Manual: format of Executable and Linkable Format (ELF) Files
- The Linux Programming Interface: 42.3.2 "Symbol Versioning", pg. 870. (Note: all of chapter 42 would be a great resource on the topic! This is a great book.)
- ELF Symbol Versioning
- Linking to Older Versioned Symbols
- PLT and GOT - the key to code sharing and dynamic libraries
In increasing numeric order.
- PEP 376 "Database of Installed Python Distributions"
- PEP 426 "Metadata for Python Software Packages 2.0"
- PEP 427 "The Wheel Binary Package Format 1.0"
- PEP 513 "A Platform Tag for Portable Linux Built Distributions" (aka manylinux1)
- PEP 571 "The manylinux2010 Platform Tag"
- Tree Cat Silhouette Sunset: Public Domain (CC0) @besshamiti
- Happy Halloween! (Costume Dog): Public Domain (CC0) @milkyfactory
Russ Allbery: Haul post
I've not been posting much lately (or writing many book reviews) for a rather good reason: I got sucked into a bunch of open source programming work, including learning Selenium, a little bit of JavaScript, and a lot about web application internals. The project in question (currently called Merou, probably will be renamed) isn't that useful for anyone else quite yet, and is still kind of a mess, but we're slowly cleaning it up. It's nice to be working on open source for work again.
At some point I need to apply what I've learned to getting remctl's Python bindings off of Python 2 and make my web site not look like I haven't touched it since the early 2000s. It would be nice to have an extra 24 hours in each day.
Anyway, book purchasing has continued, of course.
Rachel Elise Barkow — Prisoners of Politics (nonfiction)
John Carreyrou — Bad Blood (nonfiction)
E.K. Johnston — The Afterward (sff)
Daniel Kahneman — Thinking, Fast and Slow (nonfiction)
Arkady Martine — A Memory Called Empire (sff)
Rebecca Roanhorse — Trail of Lightning (sff)
I'm currently significantly behind on writing reviews and need to take some time to catch up, but Minecraft keeps calling me....
Dirk Eddelbuettel: Where may Dirk show up: May to July 2019 edition
Paul Wise: FLOSS Activities April 2019
- bortport: cleanup
- myrepos: mention silver-platter
- spelling dictionaries: codespell (1 2 3), lintian (1 2 3 4 5)
- Debian Planets: derivatives census updates (1 2 3 4 5 6)
- Debian derivatives census: delete merged branches, add Python lib, handle invalid changelogs, drop workarounds (1 2), whitespace, TODO updates (1 2), fix SVGs (1 2 3 4), add showing new logos
- Debian meta-packages: update census deps (1 2)
- Debian wiki pages: DebConf/19/Volunteer, Derivatives (Census (QA, Template, BlackWeb (1 2), Deepin, Donau, Elive, OLPC, ParrotSecurity, ProgressLinux, Q4OS, Qlustar, siduction, SolydXK, ttos, Ubuntu, VyOS, VyOS, Webconverger, Whonix (1 2), Zevenet, ZevenOS-Neptune), Integration), DeveloperNews, Fonts/Bugs/rfn-violation, LinuxTag/Discussion, PaulWise, Presentations, PrivacyIssues, SeasonOfDocs2019 (ProjectProposals/ProfileParser), SeasonOfDocs, Statistics, Teams (DPL (AskingForMoney, New)), Outreach (Policies))
- Software Heritage wiki pages: PaulWise, Suggestion box: source code to add
- FOSSjobs wiki pages: resources
- Crashes in librecaptcha, gnome-maps, liferea, speech-dispatcher
- Features in aptitude (1 2), lintian
- Expired certificate on dedected.org (reported privately)
- Usability issues in librecaptcha, firefox
- Obsolete things in incoming.d.o
- Release needed for dosfstools
- Various issues in bash
- Malformed changelogs in Ubuntu binutils and other Debian derivatives' packages
- Minor issues in command-not-found
- Spam: reported 288 Debian mailing list posts
- Debian wiki: RecentChanges for the month
- Debian screenshots:
- approved aaphoto adduser apt-listchanges arch-test atop bsdmainutils chromium cinnamon configure-debian conluding coreutils cpu-checker cpuid cpustat ctop daptup ddccontrol ddcutil deepin-calculator dmidecode dopewars e2fsprogs eiskaltdcpp-qt exa fonts-karla fonts-karmilla gaphor gparted grub-customizer gsmartctl gthumb hddtemp heaptrack-gui hollywood how-can-i-help idle-python3.5 installation-report irssi kazam klavaro kmod krita leafpad linkchecker-web lxlauncher massif-visualizer nautilus needrestart pekka-kana-2 photoflare pixfrogger rawtherapee ristretto simplescreenrecorder swisswatch sysinfo util-linux vlc xbomb xdemineur
- rejected gnome-terminal/gnome-builder/libappmenu-gtk3-parser0 (not Debian), mpv/thunar (proprietary content), default-jdk (logo), leafpad (about dialog), heaptrack (help output), heaptrack-gui (duplicate)
- rejected deletion of gkamus/sofa-apps/fonts-allerta/viewvc/gnome-blog (spam reason), lxde/fonts-f500/calf-plugins (nonsense reason), mpv (offensive reason)
- Debian: restart postgresql for cert update
- Debian mentors: workaround some issues
- Debian wiki: whitelist email domains, whitelist email addresses, reset email addresses
- Initiate discussions about various issues with several derivatives
- Invite Donau OS, BlackWeb to the Debian derivatives census
- Welcome Mentor Embedded Linux Omni OS, TTOS, BlackWeb to the Debian derivatives census
- Respond to queries from Debian users and developers on the mailing lists and IRC
The librecaptcha issues were sponsored by my employer. All other work was done on a volunteer basis.
Benjamin Mako Hill: New Research on How Anonymity is Perceived in Open Collaboration
Online anonymity often gets a bad rap and complaints about antisocial behavior from anonymous Internet users are as old as the Internet itself. On the other hand, research has shown that many Internet users seek out anonymity to protect their privacy while contributing things of value. Should people seeking to contribute to open collaboration projects like open source software and citizen science projects be required to give up identifying information in order to participate?
I was part of a team led by Nora McDonald that conducted a two-part study to better understand how open collaboration projects balance the threats of bad behavior with the goal of respecting contributors’ expectations of privacy. First, we interviewed eleven people from five different open collaboration “service providers” to understand what threats they perceive to their projects’ mission and how these threats shape privacy and security decisions when it comes to anonymous contributions. Second, we analyzed discussions about anonymous contributors on publicly available logs of the English language Wikipedia mailing list from 2010 to 2017.
In the interview study, we identified three themes that pervaded discussions of perceived threats. These included threats to:
- community norms, such as harrassment;
- sustaining participation, such as loss of or failure to attract volunteers; and
- contribution quality, low-quality contributions drain community resources.
We found that open collaboration providers were most concerned with lowering barriers to participation to attract new contributors. This makes sense given that newbies are the lifeblood of open collaboration communities. We also found that service providers thought of allowing anonymous contributions as a way of offering low barriers to participation, not as a way of helping contributors manage their privacy. They imagined that anonymous contributors who wanted to remain in the community would eventually become full participants by registering for an account and creating an identity on the site. This assumption was evident in policies and technical features of collaboration platforms that barred anonymous contributors from participating in discussions, receiving customized suggestions, or from contributing at all in some circumstances. In our second study of the English language Wikipedia public email listserv, we discovered that the perspectives we encountered in interviews also dominated discussions of anonymity on Wikipedia. In both studies, we found that anonymous contributors were seen as “second-class citizens.
This is not the way anonymous contributors see themselves. In a study we published two years ago, we interviewed people who sought out privacy when contributing to open collaboration projects. Our subjects expressed fears like being doxed, shot at, losing their job, or harassed. Some were worried about doing or viewing things online that violated censorship laws in their home country. The difference between the way that anonymity seekers see themselves and the way they are seen by service providers was striking.
One cause of this divergence in perceptions around anonymous contributors uncovered by our new paper is that people who seek out anonymity are not able to participate fully in the process of discussing and articulating norms and policies around anonymous contribution. People whose anonymity needs means they cannot participate in general cannot participate in the discussions that determine who can participate.
We conclude our paper with the observation that, although social norms have played an important role in HCI research, relying on them as a yardstick for measuring privacy expectations may leave out important minority experiences whose privacy concerns keep them from participating in the first place. In online communities like open collaboration projects, social norms may best reflect the most privileged and central users of a system while ignoring the most vulnerable
This blog post was originally posted on the Community Data Science Collective blog. Both this blog post and the paper, Privacy, Anonymity, and Perceived Risk in Open Collaboration: A Study of Service Providers, was written by Nora McDonald, Benjamin Mako Hill, Rachel Greenstadt, and Andrea Forte and will be published in the Proceedings of the 2019 ACM CHI Conference on Human Factors in Computing Systems next week. The paper will be presented at the CHI conference in Glasgow, UK on Wednesday May 8, 2019. The work was supported by the National Science Foundation (awards CNS-1703736 and CNS-1703049).
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