42ce0875

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/42ce087554e0a52da65598f7ab9b473be850924e/4c8728da-b278-43f7-9748-c3974f90451d

Wait for suite to complete:

curl --netrc -N https://staging.nix-ci.com/gh:NorfairKing:bombadil/your-first-flake/42ce087554e0a52da65598f7ab9b473be850924e/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/42ce087554e0a52da65598f7ab9b473be850924e
• curl --netrc -H 'Accept: text/markdown' https://staging.nix-ci.com/gh:NorfairKing:bombadil/your-first-flake/42ce087554e0a52da65598f7ab9b473be850924e

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