A declarative wrapper for the gi-gtk Haskell Gtk+ bindings built with haskell-gi, which is a binding library generator to access GObject-Introspection-capable C libraries (such as GLib and Gtk+).
See also: Presentation slides on gi-gtk-declarative.
Related (another TEDx talk by the same person): Why renewables can’t save the planet
Main points:
- Nature sets a limit on how much you can do with wind turbines and solar panels (not to mention hydroelectric plants), as you do not have infinite land to build on.
- The risks stemming from the possibility of nuclear power disasters are generally overstated. Far fewer people (and I mean several orders of magnitude fewer) have died from nuclear catastrophes than from air pollution; and even wind-energy-related accidents have killed more people per unit of energy up to this point.
- While nuclear plants aren’t completely safe, renewable energy sources aren’t necessarily so either – starting from the hazards posed by wind turbines and continuing to the batteries needed to store highly fluctuating renewable energy.
- The more land you need, the more of a problem it is for the environment. Wind turbines in particular are killing hundreds of thousands of birds and millions of bats every year. Solar plants need so much space that wildlife has to be cleared out, killing desert tortoises and other native creatures.
- Similarly, while the waste from nuclear plants is really bad, the waste from used solar panels is pretty bad, too (lead and other heavy metals come to mind) and takes up more volume to boot.
While making the film, Cassie Jaye discovers that the MRAs have a point or two.
Other documentaries from Cassie Jaye include The Right to Love: An American Family (on same-sex marriage rights) and Daddy I Do (on sex education vs. the Abstinence Only movement).
Matthias
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How to run Docker in a Kubernetes pod powered by a Kata container:
- Make sure that you are running containerd >= 1.3.
- Configure containerd as described at Kata Containers as a Runtime Class in the Kata Containers documentation.
- Add
privileged_without_host_devices = trueto the[plugins.cri.containerd.runtimes.kata]section of containerd’sconfig.tomlfile. This ensures that privileged Kata containers can only access the guest VM managed by the Kata containers runtime and not also the host system. - Create a Kubernetes pod running an
ubuntu:20.04container withsecurityContext: {privileged: true}set andruntimeClassName: kata. You may wish to double-check that host devices are really inaccessible (for example by checking whether the host’s root disk is visible in/dev) before you proceed. - Enter the Kubernetes pod, install Docker by running
apt update; apt install -y --no-install-recommends docker.io, and typedockerd --storage-driver=vfs. Docker should now be running.
If you are migrating an existing kubeadm-managed, Docker-based cluster to Containerd, see my post on how to migrate kubeadm to Containerd.
Matthias
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I have reconfigured the server running this web site. The Kubernetes cluster can now run pods in Kata containers.
My hope is that I can use the isolation that it provides to run docker-compose inside a pod, as I use certain software that ships with a docker-compose file, which up to now I have always had to laboriously translate into a set of native Kubernetes deployments each time a new version would come out.
We’ll see if it’s as easy as I am hoping.
Apparently, linear types are landing in GHC 9. I’m sure they’re useful for resource management. I wonder what else they might do that makes a difference in practice.
Takeaways:
- Use collection types judiciously. They have overhead.
- Look out for empty collections. They are pure overhead. Sometimes,
nullcan be a good alternative. - Collection types have default sizes that are all over the place. Sometimes it can be worth specifying the capacity at instance creation time.
- Objects come with overhead. Use primitives where you can.
I’m suddenly experiencing a craving for inline types and generics specialization…
A state machine for vt100-compatible terminal emulators. Also has Rust bindings.
A Rust crate that helps you implement the output part of a vt100-compatible terminal emulator.
The specification of the .editorconfig file, which you can put into your source code repository to configure a wide range of text editors and IDEs with consistent style settings.
Ein paar Tipps von einem Forscher, der je ein Jahr auf Hawaii und in der Antarktis geforscht hat und dabei Erfahrung mit dem Leben in Isolation sammeln konnte.
A probe.rs-based Cargo runner that lets you run embedded Rust programs just like native ones. Logs to stdout as normal and prints stack traces on error as normal.
A kit with all the basics you need to do embedded programming in Rust: a debugging bridge, a way to flash and run binaries, and text editor integration.
Strives to support many different embedded targets (currently RISC-V, STM32, and other ARM targets) and debug probes (currently CMSIS-DAP, ST-Link, and J-Link).
An efficient Rust logging library for embedded devices. Logs in binary, formats on the host.
A java.time extension library. Things like Julian and Coptic calendars, quarters, and time intervals.
Matthias
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If you use Quarkus with Scala and you get a java.lang.NoClassDefFoundError or java.lang.ClassNotFoundException when recompiling in development mode, try adding an explicit scala-compiler dependency to your POM:
<dependencies>
...
<dependency>
<groupId>org.scala-lang</groupId>
<artifactId>scala-compiler</artifactId>
<version>${scala.version}</version>
</dependency>
...
</dependencies>
This may help because Quarkus has an implicit dependency on a specific version of the compiler, which may not match the one that you are using in your project.
It worked for me, at least.
(I have since removed Scala from the MulkCMS 2 code base again as it only made the build time much longer without bringing in enough to make it worth it. Scala 3 might change that — we shall see.)
Computers today react less promptly to input than did computers from the 70s and 80s. After a period of really bad latency, we are getting close again, though.
The Asian giant hornet (‘murder hornet’), dangerous to both people and other insects, has arrived in the United States.
The hornet is known to kill whole beehives without resistance, chopping off bees’ heads and taking their thoraxes to feed their own young. While Japanese bees appear to have evolved a defense against them where they swarm each individual hornet and cook it alive by flexing their muscles to generate heat, American and European bees are defenseless, putting them in danger of extinction.
A programming language for the Cloud, they say. I have no idea what it means.
A small, but effective JIT compiler in C. Very new and not production-ready yet.
A low-level, portable JIT compiler in C.
Organizations with loose or nonexistent formal structures tend to favor the strong and oppress the weak, who generally benefit from formal structure and bureaucracy. Informal structures and cliques are less transparent and harder to control than formal hierarchies.
Hedonism is underappreciated in academic psychology.