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30 Sep 2025
rust buildtimes are absolute dogshit fking hate that shit
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any tips for sf-compute k8s uv pytorch? docker buildtimes are killing me
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๐—ฅ๐—ฒ๐—ฎ๐—ฐ๐˜ ๐—ก๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ ๐—ถ๐˜€ ๐˜€๐—น๐—ผ๐˜„๐—น๐˜† ๐—ฏ๐—ฟ๐—ฒ๐—ฎ๐—ธ๐—ถ๐—ป๐—ด ๐˜‚๐—ฝ ๐˜„๐—ถ๐˜๐—ต ๐—–๐—ผ๐—ฐ๐—ผ๐—ฎ๐—ฃ๐—ผ๐—ฑ๐˜€. If youโ€™ve ever stared at a pod install progress bar wondering where your day went, this oneโ€™s for you. The RN team is working toward ๐—ฆ๐˜„๐—ถ๐—ณ๐˜ ๐—ฃ๐—ฎ๐—ฐ๐—ธ๐—ฎ๐—ด๐—ฒ ๐— ๐—ฎ๐—ป๐—ฎ๐—ด๐—ฒ๐—ฟ (SPM) for iOS dependencies โ€” and itโ€™s a big cultural shift. โžก๏ธ ๐—ก๐—ผ ๐—บ๐—ผ๐—ฟ๐—ฒ ๐—ฝ๐—ผ๐—ฑ ๐—ถ๐—ป๐˜€๐˜๐—ฎ๐—น๐—น slowing down your builds. โžก๏ธ ๐—ก๐—ผ ๐—ฅ๐˜‚๐—ฏ๐˜† ๐˜๐—ผ๐—ผ๐—น๐—ฐ๐—ต๐—ฎ๐—ถ๐—ป to babysit โ€” fewer environment quirks and gem issues. โžก๏ธ ๐—ก๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ ๐—ซ๐—ฐ๐—ผ๐—ฑ๐—ฒ ๐—ถ๐—ป๐˜๐—ฒ๐—ด๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป with SPM, the dependency system Apple actually intended. โžก๏ธ Tighter platform alignment means fewer third-party breakages. This wonโ€™t be a flip-the-switch moment โ€” expect a ๐—บ๐˜‚๐—น๐˜๐—ถ-๐˜†๐—ฒ๐—ฎ๐—ฟ ๐—บ๐—ถ๐—ด๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป where CocoaPods and SPM coexist. But the writingโ€™s on the wall: iOS RN dev will eventually be lighter, faster, and more Apple-native. #ReactNative #iOSDev #Swift #SwiftPackageManager #MobileDev #JavaScript #OpenSource #BuildTimes #JSDev #Xcode
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iOS React Native builds are about to get a whole lot faster. With ๐—ฅ๐—ฒ๐—ฎ๐—ฐ๐˜ ๐—ก๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ ๐Ÿฌ.๐Ÿด๐Ÿญ, Expo and Meta are introducing ๐—ฝ๐—ฟ๐—ฒ๐—ฐ๐—ผ๐—บ๐—ฝ๐—ถ๐—น๐—ฒ๐—ฑ ๐—ฅ๐—ฒ๐—ฎ๐—ฐ๐˜ ๐—ก๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ for iOS โ€” something Android has been enjoying for years. Instead of compiling RN from scratch every time, Xcode now just links ๐—ฝ๐—ฟ๐—ฒ๐—ฏ๐˜‚๐—ถ๐—น๐˜ ๐—ซ๐—–๐—™๐—ฟ๐—ฎ๐—บ๐—ฒ๐˜„๐—ผ๐—ฟ๐—ธ๐˜€ (binary packages created by Xcode that contain the frameworks and libraries needed to build for multiple platforms), slashing initial build times by ๐˜‚๐—ฝ ๐˜๐—ผ ๐Ÿญ๐Ÿฌร—. โžก๏ธ Two precompiled bundles ship: one for ๐˜๐—ต๐—ถ๐—ฟ๐—ฑ-๐—ฝ๐—ฎ๐—ฟ๐˜๐˜† ๐—ฑ๐—ฒ๐—ฝ๐˜€ (Folly, GLog, etc.) and one for ๐—ฅ๐—ฒ๐—ฎ๐—ฐ๐˜ ๐—ก๐—ฎ๐˜๐—ถ๐˜ƒ๐—ฒ ๐—ฐ๐—ผ๐—ฟ๐—ฒ. โžก๏ธ Built once by Expo/Metaโ€™s CI, covering ๐—ฑ๐—ฒ๐˜ƒ๐—ถ๐—ฐ๐—ฒ๐˜€, ๐˜€๐—ถ๐—บ๐˜‚๐—น๐—ฎ๐˜๐—ผ๐—ฟ๐˜€, ๐— ๐—ฎ๐—ฐ ๐—–๐—ฎ๐˜๐—ฎ๐—น๐˜†๐˜€๐˜, ๐˜๐˜ƒ๐—ข๐—ฆ, ๐˜ƒ๐—ถ๐˜€๐—ถ๐—ผ๐—ป๐—ข๐—ฆ. โžก๏ธ Fetched from a ๐— ๐—ฎ๐˜ƒ๐—ฒ๐—ป ๐—ฟ๐—ฒ๐—ฝ๐—ผ during install โ€” no manual downloads. โžก๏ธ Biggest wins for ๐—ฝ๐˜‚๐—ฟ๐—ฒ ๐—๐—ฆ ๐—ฎ๐—ฝ๐—ฝ๐˜€, but even native-heavy builds feel the speed boost. ๐—ช๐—ฎ๐—ป๐˜ ๐˜๐—ผ ๐—ณ๐—ถ๐—ป๐—ฑ ๐—ผ๐˜‚๐˜ ๐—บ๐—ผ๐—ฟ๐—ฒ? Click on our profile, head to our website, and tap subscribe. This is where we really keep it together โ€” the updates, the context, and a few bad jokes to make it go down easier. #ReactNative #iOSDev #Expo #MobileDev #JavaScript #Performance #OpenSource #Swift #BuildTimes #JSDev
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Check the two graphs for a snapshot of comparative costs and buildtimes. The Coalition really are in Fantasyland. theguardian.com/australia-neโ€ฆ

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4 May 2024
Interesting article looking at uncached C build time speedups (spoiler, itโ€™s the headers ๐Ÿ˜ฎโ€๐Ÿ’จ) โ€” recommended by @nlpendleton. Read it here: hubs.la/Q02w5b7S0 #cplusplus #cplus #buildtimes #codebade #firmware #software #hardware #embedded
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Replying to @kettanaito
It has improved js. Like in what world is faster buildtimes, runtimes, consistent ui, cross platform scripting engine, and an all in one bundler a bad thing. It is also written in Zig which will make life way easier in the future. You're faulting bun for having an actual business plan and great ideas.
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Replying to @skdh
Buildtimes in EU for the last 16 reactors was all over 10 years. Add siteprep of 2-3 years groundbreaking until concretepour. Your averages are comparing GEn-I and Gen-II when you present the median - that wildly inaccurate gobledegook!
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Replying to @ICBarrett
I agree completely. Due to many more players, lower capial costs per unit, shorter buildtimes and when new-orders can be seen as viable (acceptable IRR can be locked in for 5-8 years), orders will be placed. Around then it's time to exit OSVs since longterm DRs will get a ceiling
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I built a multiplayer tower defence a few years ago. The trick was having buildtimes higher than the ping.
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19 Dec 2022
Replying to @ArmyOfBruce
Yea im giving up on sys crates. i just write what i need straight from docs just like on macos. Linux we'll do the same. It massively hurts buildtimes as well. I think on linux we have like 300kloc of useless generated rust from C headers where we need like 500loc.
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Happy to announce that Manuel Nakamurakare will be speaking at #dcnyc22! @mnakamurakare from @PinterestEng will discuss how they brought down their #buildtimes and general optimization tips. Read the full abstract here: nyc.droidcon.com/manuel-nakaโ€ฆ
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Reduce your #BuildTimes by identifying the source of #BuildCache misses and optimizing your build cache effectiveness. See our โ€œDiagnosing build cache misses with task inputs comparisonโ€ tutorial - docs.gradle.com/enterprise/tโ€ฆ
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Replying to @bernhardsson
It would not be as bad if the buildtimes where a lot shorter. Build times can be optimized for, but it requires effort. I believe tracking build time as carefully as code coverage would help incentivise developers to optimize for faster builds.
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16 Jul 2022
I just git pull on our VPS and then build there. No need to commit wasm blobs or 'publish'. Just git pull and build. And because our buildtimes are minimal, its very doable. Takes a minute or so to build, but thats fine. Atleast its not half an hour as most Rust ecosystem stuff
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Airbnb Moves from Webpack to Metro, Enjoys Shorter Build Times bit.ly/3NIHrNg by Jessica Wachtel @Airbnb #Webpack #Metro #buildtimes

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Weโ€™re thrilled to announce ๐Ÿ“ข our next speaker for #dcsf22, Manuel Nakamurakare from @Pinterest. @mnakamurakare's talk will be about how they brought down their #buildtimes and general optimization tips. Read the full abstract here: sf.droidcon.com/speaker/manuโ€ฆ
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9 Feb 2022
And then if you do this at scale, as applications gather up all these vastly overbloated do-it-all dependencies, we get minute buildtimes for a string-concatenation operation (JS) or in Rust 357 dependencies to open a window and draw a button.
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The ones that exists are 7 times slower than a garden snail-> long buildtimes, huge cost. Think about the time and price cut that SpaceX did with F9. Same thing, 70 year old tech ready for disruption.
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