Category archives: Snaking

Discussions of programming, particularly of programming Python

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Go Lang Impressions after 2 Months

So for work I've needed to learn GoLang, which I'd always before picked up, kicked the tires and said "meh" on. A few months now of working with it pretty-much-daily have upped the "meh" quite a bit. To be clear, I'd choose Go over raw C, but I'd likely pick modern C++ over Go.

Channels ...

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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 which does this:


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

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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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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 ...

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Listener GUI Started

So with the code-context, the dictation in Listener is getting okay-ish. It's still pretty frustrating and error prone, but I can use it maybe 1/4 of the time (mostly for doc-strings). Part of the frustration is just that the language models are not yet well tuned for some commonly needed phrases that the tokeniser didn't ...

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Auto-link a Host-provided Package into a Virtualenv

There are Python packages that are basically a PITA to get compiled into your virtualenv. The one I constantly hit when doing GStreamer, DBus, IBus, etc is gobject-introspection (a.k.a. gi). So, there's now a trivial package available:

source path-to-venv/bin/activate
pip install venvhpl
venv-hpl gi

Listener v2, using DeepSpeech for Coding on Linux

So a few years ago, as I was working on a project called Listener that used PocketSphinx to allow dictation into the Eric IDE, I got some feedback suggesting that the only practical solution these days would be to use a neural network based dictation engine. That led me down a rabbit hole from which ...

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Playing with EGL+OpenGL Off-screen Multi-Card

So I've now spent the last day and a half playing with getting EGL offscreen rendering working on Linux. There are two major ways to do off-screen rendering with EGL and OpenGL. In the first, you use a pbuffer surface, that surface is basically a purpose-defined surface-type for off-screen backing of a renderer. When I ...

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