--- title: Does this install succeed? If it does, which three... description: A dependency resolution puzzle challenges readers to determine whether a package install succeeds and which versions end up in the lockfile. Given three... canonical: https://daily.dev/posts/does-this-install-succeed-if-it-does-which-three-versions-end-up-in-your-lockfile--b43gobmx8 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Does this install succeed? If it does, which three versions end up in your lockfile? | daily.dev og:description: A dependency resolution puzzle challenges readers to determine whether a package install succeeds and which versions end up in the lockfile. Given three... og:url: https://daily.dev/posts/does-this-install-succeed-if-it-does-which-three-versions-end-up-in-your-lockfile--b43gobmx8 og:image: https://api.daily.dev/og/posts/b43GoBmX8.png og:image:alt: Does this install succeed? If it does, which three versions end up in your lockfile? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Does this install succeed? If it does, which three versions end up in your lockfile? **[Google for Developers](https://daily.dev/sources/googledevelopers)** · 1 min read · 0 upvotes · 0 comments ## Summary A dependency resolution puzzle challenges readers to determine whether a package install succeeds and which versions end up in the lockfile. Given three required packages (router 2.0+, parser 1.0+, tokens 1.0+) and six available versions with conflicting constraints, the resolver must find a compatible set using two rules: only one version per package, and always prefer the newest compatible version. A bonus question asks about the computational complexity class of version solving. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Keeping one version of everything](https://daily.dev/posts/keeping-one-version-of-everything-vva4lkoge) · Farid Zakaria’s Blog · 0 upvotes · 0 comments - [Maybe version ranges are a good idea after all?](https://daily.dev/posts/maybe-version-ranges-are-a-good-idea-after-all--pkmug8ax8) · Neil Madden · 3 upvotes · 0 comments - [Why npm Dependency Trees Are So Big](https://daily.dev/posts/why-npm-dependency-trees-are-so-big-dxeylgflr) · Andrew Nesbitt · 10 upvotes · 2 comments - [If It Quacks Like a Package Manager](https://daily.dev/posts/if-it-quacks-like-a-package-manager-rsetoxikw) · Lobsters · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/does-this-install-succeed-if-it-does-which-three-versions-end-up-in-your-lockfile--b43gobmx8) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Does this install succeed? 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