Archives 2021

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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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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 ...

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