How to Learn Nix, Part 49: nix-direnv is a huge quality of life improvement
psst, hey kid, wanna read a weird programming book The reason I discovered an ancient blog post the other day was that I had something new to say about Nix for the first time in over two years. The thing I want to say is this: nix-direnv is great. It fixes roughly every problem that I’ve had with nix-shell, and does so in a much nicer way than my previous ad-hoc solutions. This is important becaus
How to copy the output of the last shell command you ran
This is a fancy thing that iTerm can do, somewhat invasively, and Terminal.app can do, somewhat transparently, and if you already know how to do this then just keep doing your thing and don’t worry about it. This post is going to show you how to do it in tmux, because tmux is great and it’s not coupled to your choice of terminal emulator and it’s a cool superpower to add to your toolkit. But it’s
How to Learn Nix
Get new posts via RSS or Twitter, or by subscribing to my newsletter: Opening remarksWhat's all this about? 2021-03-04 Prior knowledge 2021-03-04 Reading the Nix manualWhat we talk about when we talk about Nix 2021-03-04 Quick starts, full hearts 2021-03-04 Basic package management 2021-03-05 Profiles 2021-03-06 Garbage collection 2021-03-06 Channels 2021-03-07 Learning to share 2021-03-07 My firs
sd: my script directory
Hi! You’re reading an old post, and some of might be out of date. Check out this newer post for an update on the state of sd, or jump straight to the GitHub repo for the latest news. ~/sd is my script directory. It looks like this: $ tree ~/sd /Users/ian/sd ├── blog │ ├── preview │ └── publish ├── book │ ├── open │ ├── pdf │ ├── progress │ └── typeset ├── cat ├── dim │ └── visualize ├── edit ├── g
Decoding UTF-8 with Parser Combinators
Now let’s talk about what it means. First, note that 0xxxxxxx is not hexadecimal, but a bit pattern that means the “control” bit 0 followed by seven “data” bits, which could be anything. The four rows in the table correspond to the four flavors of UTF-8 codepoints, distinguished by the number of bytes you need to encode them (one to four). “Lower bound” and “upper bound” tell us which codepoints l
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Generalized Macros
Making a Game in Janet
A newcomer's run-in with lazy I/O
