for await (const chunks of input) {
homebrew-core has one Ruby file per package formula, and every brew update used to clone or fetch the whole repository until it got large enough that GitHub explicitly asked them to stop. Homebrew 4.0 switched to downloading a JSON file over HTTP, because users wanted the current state of a package rather than its commit history. But updating a formula still means opening a pull request against homebrew-core, because git is where the collaboration tooling lives. Instead of using git as a database, what if you used a database as a git?
，这一点在safew官方版本下载中也有详细论述
for a in a_list:，更多细节参见Line官方版本下载
A frontend is a container image that BuildKit runs to convert your build definition (Dockerfile, YAML, JSON, HCL, whatever) into LLB. The frontend receives the build context and the build file through the BuildKit Gateway API, and returns a serialized LLB graph.，这一点在heLLoword翻译官方下载中也有详细论述
unsigned long long old_data_bytes = h->length * sizes[h->type];