Groundhog Day: Outside the Burrow

Groundhog Day is a great movie. What I'd like to see is a Groundhog Day edit sitting next to Groundhog Day in Netflix which is just the movie cut such that it is the timeline as seen by an in-world viewer that is not part of the time loop. That is, you see the setup, ...

Continue reading

Social Cost of Carbon and Ethics

It is unreasonably frustrating to me that discussions of the Social Cost of Carbon by Economists are seemingly using models that read like a Libertarian's Fancy Footwork to Excuse Desired Behaviour. Basically, by deciding that we value the lives of our children and children's children less than our own comfort, we can deprecate the loss-in-value ...

Continue reading

Django Field Rename Migrations and Test Cases

Is there some trick to running Django test cases when you've got a RenameField later in the migration-stack? I feel like this has to be some obvious thing I'm missing...

With a migration (say 0058_big_restructure.py) which does this:


migrations.RenameField(
model_name='rfsource',
old_name='source_name',
new_name='follow_source_name',
),

and a previous migration, (say 0006_long_ago_change_that_populates_some_other_field.py) which doesn't explicitly reference the source_name ...

Continue reading

Seems Time Warps have Infected the Blog

Just randomly clicked through a similar posts link and found an article that was (actually) published in 2015 claiming to be published in 2020. Clicking through more random links, it seems that every article that existed when I moved the blog to the new service on May 18th of last year got the timestamps modified ...

Continue reading

PycraftServer Plugin

So the boys (and their cousin) are both into Minecraft again, so I've been refining the Pycraft code quite a bit. We no longer use the RaspberryJuice plugin, but instead have a custom Bukkit plugin that does Java reflection/introspection to auto-generate the API. That lets us do a lot more, manipulate inventories, read and write ...

Continue reading

Adding a Certificate Authority to Chrome Trust Store

So you have a corporate or project specific root of trust you need Chrome to recognise. How do you take your PEM certificate as you get from easy-rsa or the like and make it something that Chrome will accept? The answer is not particularly complex, but it really seems like this very-common process is not ...

Continue reading

PyOpenGL Build Enhancements

Spent the evening getting the Python 3.9 build for PyOpenGL-accelerate running on Appveyor. In the end it was just knowing to add a tag "APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019" to the build-matrix for that one Python version so that it is built on the Python 3.9-compatible build-image. Will have to boot into Windows to test that ...

Continue reading

First Snap Package Doesn't Impress

So with the move to 20.04 I've now run into my first package (rocketchat-desktop) that has given up on debian packages and only provides a snap package... and... well... it just doesn't run. It installs, it pretends to run and exits without any obvious error or message, but nothing happens.

Luckily this particular package is ...

Continue reading

Ubuntu Upgrades are Magic unless they aren't

There is something magical about asking Ubuntu to upgrade your desktop while you're running it. "Hey, Ubuntu, let's try focal" and it heads off to churn through downloading 6GB of stuff and unpacking/installing it. You head off to work in the meantime.

But it gets stuck because you have postgresql and it doesn't make it ...

Continue reading

RunSnakeRun 3.0.0 Beta 1

So I finally sat down and finished off the work I was doing a while ago to get RunSnakeRun updated to run on Python 3 and support pyspy/speedscope files. There was a bunch of stuff needed to make us compatible with the wxPython Pheonix releases, a huge and horrible hack to let us load Python2 ...

Continue reading

Yearly archives