3cd9f2c5

Add a Nix flake for fast, incrementally-cached CI

Builds bombadil with crane and the oxalica rust-overlay (x86_64-linux): the CLI
binary, static musl + aarch64 release binaries, the wasm inspect UI, the npm
package, plus clippy, rustfmt and the test suite -- each as exactly one
attribute. Dependencies are compiled once in a single derivation whose source
crane reduces to cargo metadata only, so editing source never rebuilds them.
nix-ci.nix hand-declares the build graph and disables auto dependency discovery
to keep no-op rebuilds fast.

Agent Instructions

Each run corresponds to one flake attribute. Click a run for its logs and status.

Example: https://staging.nix-ci.com/gh:NorfairKing:bombadil/your-first-flake/3cd9f2c58d6651c46bb0d501d75d049d09305bfb/0608a053-86c3-4660-8008-f3207511fa8a

Wait for suite to complete:

curl --netrc -N https://staging.nix-ci.com/gh:NorfairKing:bombadil/your-first-flake/3cd9f2c58d6651c46bb0d501d75d049d09305bfb/wait

This page is also available in machine-friendly formats. Request one with the Accept header:

• curl --netrc -H 'Accept: application/json' https://staging.nix-ci.com/gh:NorfairKing:bombadil/your-first-flake/3cd9f2c58d6651c46bb0d501d75d049d09305bfb
• curl --netrc -H 'Accept: text/markdown' https://staging.nix-ci.com/gh:NorfairKing:bombadil/your-first-flake/3cd9f2c58d6651c46bb0d501d75d049d09305bfb

For more instructions, fetch https://staging.nix-ci.com/instructions .