To give some detail, it’s /var that is writable, and mutable directories will have symbolic links pointing to subdirectories of /var:
At the heart of BuildKit is LLB (Low-Level Build definition). Think of it as the LLVM IR of build systems. LLB is a binary protocol (protobuf) that describes a DAG of filesystem operations: run a command, copy files, mount a filesystem. It’s content-addressable, which means identical operations produce identical hashes, enabling aggressive caching.
。关于这个话题，Line官方版本下载提供了深入分析
3、新机会和非共识复杂的场景、未满足的蓝海，叠加技术潜力，在AI和银发人群这片蓝海上，也涌现出了一些新机会。，更多细节参见搜狗输入法2026
This story was originally featured on Fortune.com，这一点在搜狗输入法2026中也有详细论述
Basic Plan: $27/Month