Hírolvasó

[$] Python, tail calls, and performance

2 hét 4 nap óta
Ken Jin welcomed EuroPython 2025 attendees to his talk entitled "Building a new tail-calling interpreter for Python", but noted that the title really should be: "Measuring the performance of compilers and interpreters is really hard". Jin's efforts to switch the CPython interpreter to use tail calls, which can be optimized as regular jumps, initially seemed to produce an almost miraculous performance improvement. As his modified title suggests, the actual improvement was rather smaller; there is still some performance improvement and there are other benefits from the change.
jake

LibreOffice 25.8 released

2 hét 4 nap óta

Version 25.8 of the LibreOffice open-source office suite has been released. Notable changes include several new functions in the Calc spreadsheet application, ability to export to the PDF 2.0 format, better PowerPoint font compatibility with Impress, and significant performance improvements. For a full list of changes, see the release notes on the Document Foundation wiki.

jzb

[$] Lucky 13: a look at Debian trixie

2 hét 4 nap óta

After more than two years of development, the Debian Project has released its new stable version, Debian 13 ("trixie"). The release comes with the usual bounty of upgraded packages and more than 14,000 new packages; it also debuts Advanced Package Tool (APT) 3.0 as the default package manager and makes 64-bit RISC-V a supported architecture. There are few surprises with trixie, which is exactly what many Linux users are hoping for—a free operating system that just works as expected.

jzb

Security updates for Wednesday

2 hét 4 nap óta
Security updates have been issued by Debian (webkit2gtk), Fedora (firefox and libarchive), Red Hat (python3.11-setuptools and python3.12-setuptools), Slackware (mozilla), SUSE (apache2-mod_security2, cairo-devel, cflow, docker, glibc, go1.25, govulncheck-vulndb, gstreamer-0_10-plugins-base, jq, kernel, libarchive, libssh, libxslt, openbao, python-urllib3, systemd, and xz), and Ubuntu (apache2, libssh, libxml2, linux, linux-aws, linux-aws-5.15, linux-gcp, linux-gcp-5.15, linux-gkeop, linux-hwe-5.15, linux-ibm-5.15, linux-intel-iot-realtime, linux-intel-iotg-5.15, linux-lowlatency, linux-lowlatency-hwe-5.15, linux-nvidia-tegra, linux-nvidia-tegra-5.15, linux-nvidia-tegra-igx, linux-oracle-5.15, linux-realtime, linux-xilinx-zynqmp, linux, linux-aws, linux-aws-5.4, linux-bluefield, linux-gcp, linux-gcp-5.4, linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle, linux-raspi, linux-raspi-5.4, linux-xilinx-zynqmp, linux, linux-aws, linux-lowlatency, linux-lowlatency-hwe-6.8, linux-realtime, linux-aws-fips, linux-fips, linux-gcp-fips, linux-fips, linux-aws-fips, linux-gcp-fips, linux-ibm-6.8, tomcat10, and webkit2gtk).
jzb

Preventing domain-resurrection attacks (PyPI blog)

2 hét 4 nap óta

The Python Package Index (PyPI) has announced that it is now checking for expired domains to try to prevent domain-resurrection attacks. In this type of attack, a malicious user buys an expired domain and uses it to take over an account by resetting the password associated with the email used with PyPI. Since June, PyPI has unverified more than 1,800 email addresses after their associated domains entered expiration phases.

After an initial bulk check period that took place in April 2025, PyPI will check daily for any domains in use for status changes, and update its internal database with the most recent status.

If a domain registration enters the redemption period, that's an indicator to PyPI that the previously verified email destinations may not be trusted, and will un-verify a previously-verified email address. PyPI will not issue a password reset request to addresses that have become unverified.

PyPI recommends that users add a second verified email address "from another notable domain (e.g. Gmail)" to their account, if they do not have one already.

jzb

[$] The Koka programming language

2 hét 5 nap óta

Statically typed programming languages can help catch mismatches between the kinds of values a program is intended to manipulate, and the values it actually manipulates. While there have been many bytes spent on discussions of whether this is worth the effort, some programming language designers believe that the type checking in current languages does not go far enough. Koka, an experimental functional programming language, extends its type system with an effect system that tracks the side-effects a program will have in the course of producing a value.

daroc

Security updates for Tuesday

2 hét 5 nap óta
Security updates have been issued by AlmaLinux (golang, openjpeg2, toolbox, and xterm), Debian (libxslt, mbedtls, openjdk-17, and webkit2gtk), Fedora (apptainer, mingw-gstreamer1, mingw-gstreamer1-plugins-bad-free, mingw-gstreamer1-plugins-base, mingw-gstreamer1-plugins-good, rust-h2, and uv), Oracle (golang, kernel, and openjpeg2), Red Hat (kernel and xterm), SUSE (389-ds, cairo, container-suseconnect, kernel, lua51-luajit, postgresql13, and trivy), and Ubuntu (linux, linux-aws, linux-aws-6.14, linux-gcp, linux-gcp-6.14, linux-oracle, linux-oracle-6.14, linux-raspi, linux-realtime and openldap).
corbet

The State of Python 2025

2 hét 5 nap óta
The JetBrains blog presents the results of the eighth annual Python Developers Survey, carried out in partnership with the Python Software Foundation.

This year, 51% of all surveyed Python developers are involved in data exploration and processing, with pandas and NumPy being the tools most commonly used for this.

Many of us in the Python pundit space have talked about Python as being divided into thirds: One-third web development, one-third data science and pure science, and one-third as a catch-all bin.

We need to rethink that positioning now that one of those thirds is overwhelmingly the most significant portion of Python.

corbet

Git v2.51 released

2 hét 5 nap óta
The Git distributed version-control system has released version 2.51, with "506 non-merge commits since v2.50.1, contributed by 91 people, 21 of which are new faces". It brings multiple new features, some of which are highlighted in a post on the GitHub blog. It includes some performance improvements for multi-pack indexes (MIDXs), a way to import and export stash entries so they can be migrated more easily, and smaller pack files: Git 2.51 takes the spirit of that change and goes a step further by introducing a new way to collect objects when repacking, called "path walk". Instead of walking objects in revision order with Git emitting objects with their corresponding path names along the way, the path walk approach emits all objects from a given path at the same time. This approach avoids the name-hash heuristic altogether and can look for deltas within groups of objects that are known to be at the same path.

As a result, Git can generate packs using the path walk approach that are often significantly smaller than even those generated with the new name hash function described above. Its timings are competitive even with generating packs using the existing revision order traversal.

jake

[$] Kexec handover and the live update orchestrator

2 hét 5 nap óta
Rebooting a computer ordinarily brings an abrupt end to any state built up by the old system; the new kernel starts from scratch. There are, however, people who would like to be able to reboot their systems without disrupting the workloads running therein. Various developers are currently partway through the project of adding this capability, in the form of "kexec handover" and the "live update orchestrator", to the kernel.
corbet

Security updates for Monday

2 hét 6 nap óta
Security updates have been issued by AlmaLinux (go-toolset:rhel8, kernel, and kernel-rt), Fedora (chromium), Oracle (libxml2), Red Hat (go-toolset:rhel8, golang, kernel, kernel-rt, openjpeg2, rsync, and tigervnc), and SUSE (apache-commons-lang3, chromedriver, fractal, framework_tool, go1.23-openssl, go1.24-openssl, grub2, gstreamer-devtools, gstreamer-plugins-rs, jasper, libavif, lighttpd, nginx, podman, postgresql13, postgresql14, postgresql15, postgresql16, python311-pypdf, ruby2.5, rust-keylime, tiff, tomcat, tomcat10, and tomcat11).
jake