Diffle is a keyboard-first, browser-hosted diff viewer focused on fast, granular code review. It renders Git diffs (commits, ranges, PRs, worktree) and lets reviewers add comments on lines, blocks, whole files, or a focused commit; comments live under /diffle/ rather than changing the worktree, follow their text as code moves, and go stale when a change leaves the diff. Reviews can be exported into a pending GitHub review (diffle does not submit the review), with export limited to comparisons that match the PR's committed diff; a GitHub token or gh is required for integration. Generated files auto-collapse by linguist markers, threads can be resolved or copied out, and navigation is optimized for keys (j/k, J/K, /, c, C, V, R, v, gf, F, etc.) for quick movement, selection, and searching.
Language Server Protocol integration runs a server per language found on PATH to provide go-to-definition, type definition, references, symbols, and hover docs inside diffs, with the ability to list, override, or disable servers per run or persistently. Install options include conda-forge, npm, a standalone binary script, npx, or Nix; shell completions, reverse-proxy support, and dev/test workflows (npm scripts, e2e Docker screenshot tests) are provided. Config commands allow lsp overrides and repo-scoped shells for servers, and the tool bundles conveniences like copy-all-comments, file filtering, and commit-focused views for iterative review workflows.
Summary generated by AI from the linked article. hn.today is not affiliated with Hacker News or Y Combinator.
A minimal Rust terminal user interface (TUI) helps manage GitHub repositories and branches efficiently. The project is hosted on GitHub with limited activity and no detailed description available. (github.com)
ManimGX is an animation engine that combines Manim's Python API with a Rust/wgpu GPU core to create 3D videos and animations. It offers fast math computations and rendering for agents and visualizations in Python. (github.com)
Sergey Davidoff discusses advancements in Rust's SIMD abstractions, making them safer and easier to use without unsafe blocks. Rust 1.87 now allows writing SIMD functions with proper CPU feature tracking, reducing errors and simplifying code. (shnatsel.github.io)
Helium Terminal is a lightweight macOS terminal designed for coding agents, built on libghostty. It features a sidebar with tabs, labels, folders, and integrates with AI sessions like Claude Code and Codex. (helium-terminal.bensarmiento.com)
A study finds that while AI coding agents increase code generation, human review processes create a bottleneck that limits overall productivity. The additional review time offsets gains, resulting in no significant increase in software output or employment reduction. (arstechnica.com)
Rat's register allocator uses a priority bin-packing algorithm to assign virtual registers to physical ones, improving code quality over linear scan methods. It handles spilling and calling conventions automatically, optimizing register use across function calls. (hexrat.cc)
Today's best Hacker News stories, summarized and screenshotted, one email a day.