Jun 6, 2026
3 links from the engineering internet.
claude code v2.1.166 adds fallback models and glob deny rules
the cli adds a fallbackModel setting that tries up to three backup models when the primary is unavailable, glob patterns in deny rules so "*" blocks every tool, and MAX_THINKING_TOKENS=0 to disable thinking. it also hardens cross-session messaging so relayed messages no longer carry user authority.
zed v1.5.4 fixes diff-view and agent-edit streaming crashes
the editor's patch release fixes a crash when unsplitting a side-by-side diff, a crash while streaming agent edits with multibyte characters, high cpu usage from zeta, and a case where zed stopped responding to filesystem changes.
simon willison releases micropython-wasm for sandboxed python
willison published micropython-wasm, an alpha library that runs untrusted python in a fresh webassembly sandbox via wasmtime, with no filesystem or network access and configurable memory, fuel, and wall-clock limits.