A flag is not a setting
I was reviewing a change to rust-tool-base’s scaffolder when a word stopped me dead. rtb generate config-field. I couldn’t have told you why in that first second… I looked at it and just knew it was wrong. The verb there …
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23 pages
Rust
Everyone wants Rust's safety, nobody wants Rust
This spring, the better part of a million lines of Zig quietly became a million lines of Rust. Bun, the JavaScript runtime that was the showcase for “you don’t need a borrow checker, you need good tools and a steady …
Three traps release-plz sets for a Rust workspace
I wrote up the two days I lost releasing a seventeen-crate workspace to crates.io as a war story, wrong turns and all. This is the other half: the field guide, so you don’t have to lose the same two days. release-plz is …
Same config, two answers
Let me confess a small heresy first, because it’s the reason any of this happened. After a career spent as a branching man, gitflow, gitlabflow, a tidy develop branch and a careful dance of merges, I’ve come round to …
From allow_failure to blocking
There’s a special kind of CI job that everyone on a team quietly learns to ignore: the one marked allow_failure: true. It runs, it goes red, the pipeline goes green anyway, and after the third time you stop looking at …
Pure-Rust Git, no git binary
go-tool-base’s VCS support has two halves that get confused for one. One half talks to forge APIs (GitHub, GitLab) for releases and pull requests. The other talks to the .git directory on disk: clone, history, diff, …
clap's global flag, except in a passthrough subtree
--output json worked everywhere. On the top-level command, on every ordinary subcommand, wherever the user fancied putting it. Then it stopped working in exactly one place, and of course it was the subcommand I’d been …
Secrets that scrub themselves from RAM
A while ago I worked out where a CLI should keep your API key: env var, OS keychain, or, grudgingly, a literal in the config file. That answers where the secret lives. It says nothing about what happens to it once it’s …
Two telemetry events, one mangled line
A line in a log file that no parser would touch. Not a wrong value, not a missing field. Half of one telemetry event spliced into the middle of another, like two people typing into the same text box at once. Which, it …
Supporting a provider, or actually using it
If your CLI tool talks to an AI model, you don’t want to hard-wire one vendor. So you reach for a single client interface over several providers, which is the right call. The trap is the next step: build that interface …
