How Mitchell Hashimoto Builds Ghostty

Ghostty creator and Hashicorp cofounder Mitchell Hashimoto talks with Richard about the development of that high-performance terminal emulator: how he's been building Ghostty, how he does native GUI development while sharing code across platforms, how LLMs have affected both the project and his love of coding, his thoughts on AI ethics, and more.This episode was sponsored by mailtrap.io - modern email delivery for developers. Try Mailtrap for free: https://l.rw.rw/software_unscripted_1Patreon supporters get ad-free episodes! https://www.patreon.com/SoftwareUnscripted- Ghostty nonprofit announcement - https://mitchellh.com/writing/ghostty-non-profit- Zig programming language - https://ziglang.org- Roc programming language - https://www.roc-lang.org- Zed's Windows 95-inspired launch site - https://www.windowswen.com- Amp Code - https://ampcode.com- Wispr Flow - https://wisprflow.ai Hosted on Acast. See acast.com/privacy for more information.

Gleam programming language creator Louis Pilfold talks with Richard about Gleam's design and various challenges that came up when implementing its compiler.- Gleam Language - https://gleam.run- Erlang Language - https://www.erlang.org- Elixir Language - https://elixir-lang.org- Roc Language - https://www.roc-lang.org- Hadoukenify https://github.com/reibitto/hadoukenify - presumably based on https://twitter.com/dr4goonis/status/476617165463105536- "Let-generalization: Let's not?" by Ayaz Hafiz - https://github.com/roc-lang/rfcs/blob/e4f05480ed96136395bb466bf5c241e42100bf66/0010-let-generalization-lets-not.md- "Let Should Not Be Generalised" by Simon Peyton Jones, Dimitrios Vytiniotis, and Tom Schrijvers - https://simon.peytonjones.org/let-generalised/ Hosted on Acast. See acast.com/privacy for more information.

Harry Goldstein talks with Richard Feldman about the Lean 4 programming language's compile-time metaprogramming capabilities, including how they can be used to control elements of your IDE in realtime. They also discuss other topics like property-based testing, theorem proving, and Smalltalk.You can get ad-free episodes (including video) by supporting Software Unscripted on Patreon! https://www.patreon.com/SoftwareUnscriptedThe Best New Programming Language is a Proof Assistant by Harry Goldstein - https://youtu.be/c5LOYzZx-0c?si=UnTfkczIhdoF7QkxThe Lean Programming Language - https://lean-lang.orgSimon Peyton-Jones: Escape from the ivory tower: the Haskell journey - https://youtu.be/re96UgMk6GQ?si=8xqpAS8VTQaqgbzg"Shen: A Sufficiently Advanced Lisp" by Aditya Siram - https://youtu.be/lMcRBdSdO_U?si=VOwJNeLAvnIRUm_nHypothesis Property-Based Testing library for Python - https://hypothesis.works/ Hosted on Acast. See acast.com/privacy for more information.

Jonathan Blow, creator of popular games Braid and The Witness, talks with Richard about programming language design - including the design of the programming language he's been building for game developers.Keynote & Tech Demo - https://youtu.be/IdpD5QIVOKQECS and Rust's Borrow Checker - https://youtu.be/4t1K66dMhWk"The 30 Million Line Problem" - https://youtu.be/kZRE7HIO3vk"A New Programming Language for Games" - https://youtu.be/TH9VCN6UkyQ?si=Z5cqazo4QU7AibzBRoc Programming Language - https://roc-lang.orgCasey Muratori's "Performance-Aware Programming" Course - https://www.computerenhance.com/p/welcome-to-the-performance-awareFile Pilot File Explorer - https://filepilot.tech/Ghostty Terminal - https://ghostty.org/Language Server Protocol - https://microsoft.github.io/language-server-protocol/WebAssembly Integer Sizes - https://developer.mozilla.org/en-US/docs/WebAssembly/Reference/Numeric/ConstCliff Click's Sea of Nodes Compiler IR - https://github.com/SeaOfNodes/Chapters00:00 The Programming Establishment02:04 Metaprogramming05:04 Compile-Time Execution08:05 Language Feature Interoperability10:53 Compile Time Execution27:52 Cross-Compiling and FFI31:04 Determinism in Programming35:07 Balancing Power and Safety40:11 Memory Safety vs. Performance50:15 The Evolution of Software Performance55:32 Performance Awareness01:03:56 Dependencies and Version Control01:14:54 Dependency Availability Risk01:18:42 Memory Management01:24:51 Sandboxing01:30:23 Operating Systems Hosted on Acast. See acast.com/privacy for more information.

Richard talks with Zig Creator Andrew Kelley.- Support Zig - https://ziglang.org/zsf/- Zig's "Writergate" - https://ziglang.org/download/0.15.1/release-notes.html#Writergate- "What Color is Your Function?" by Robert Nystrom - https://journal.stuffwithstuff.com/2015/02/01/what-color-is-your-function/- "Asynchrony is not Concurrency" by Loris Cro - https://kristoff.it/blog/asynchrony-is-not-concurrency/- "Data alignment for speed: myth or reality?" by Daniel Lemire - https://lemire.me/blog/2012/05/31/data-alignment-for-speed-myth-or-reality/ Hosted on Acast. See acast.com/privacy for more information.

xz vulnerability: https://en.wikipedia.org/wiki/XZ_Utils_backdoorSpectre: https://en.wikipedia.org/wiki/Spectre_(security_vulnerability)Meltdown: https://en.wikipedia.org/wiki/Meltdown_(security_vulnerability)Heartbleed: https://en.wikipedia.org/wiki/HeartbleedNoah on GitHub https://github.com/eeue56 - Substack https://substack.com/@eeue56 - BlueSky https://bsky.app/profile/derw-lang.com Hosted on Acast. See acast.com/privacy for more information.

Ladybird Browser - https://ladybird.orgSerenityOS - https://serenityos.orgStory of the man who used powerlifting to recover after falling off a roof https://startingstrength.com/articles/brian_jones_story.pdfStrongLifts 5x5 - https://stronglifts.com/stronglifts-5x5/Starting Strength - https://startingstrength.com/ Hosted on Acast. See acast.com/privacy for more information.

Richard talks with Swift, LLVM, Clang, and Mojo creator Chris Lattner about programming on the GPU and on the CPU, as well as a number of programming language design topics.Chris's "Democratizing AI Compute" blog series - https://www.modular.com/blog/democratizing-compute-part-1-deepseeks-impact-on-aiMojo https://www.modular.com/mojoRoc https://www.roc-lang.orgSoftware Unscripted episode with Futhark language creator https://pod.link/1602572955/episode/00564b1774ebe0e4225a630825ed3deeClaude 4 https://www.anthropic.com/news/claude-4 Hosted on Acast. See acast.com/privacy for more information.

Longtime Rust contributor Steve Klabnik talks with Richard about the broken state of AI discourse, from excessive hype to excessive hate, and reasonable alternatives we could pursue instead.Steve's blog post: "I am disappointed in the AI discourse" - https://steveklabnik.com/writing/i-am-disappointed-in-the-ai-discourse/Deep dive into why Rust's compile times are slow: https://www.pingcap.com/blog/rust-compilation-model-calamity/Y Combinator partners on "100x productivity" claims: https://www.youtube.com/watch?v=IACHfKmZMr8&t=155s Hosted on Acast. See acast.com/privacy for more information.

Elixir creator José Valim goes into a very deep dive on language design with Richard, centered around some upcoming major design changes to the Roc programming language.- https://elixir-lang.org- https://roc-lang.org- Unison's algebraic effects: https://www.unison-lang.org/docs/fundamentals/abilities/- Koka's algebraic effects: https://koka-lang.github.io/koka/doc/book.html#why-effects- OCaml's algebraic effects: https://ocaml.org/manual/5.3/effects.html Hosted on Acast. See acast.com/privacy for more information.