# 1000 Instances of flake-utils

DevFeed: [1000 Instances of flake-utils](<https://devfeed.tech/articles/1000-instances-of-flake-utils-32425.md>)

Original publisher: [Read original article](<https://nixcademy.com/posts/1000-instances-of-flake-utils/>)

Author: Marijan Petričević

Published: 2025-05-26T00:00:00Z

Content type: article

Language: en

Sources: [Nixcademy Blog](<https://devfeed.tech/sources/nixcademy-blog.md>)

Topics: [Nix](<https://devfeed.tech/topics/nix.md>), [systems](<https://devfeed.tech/topics/systems.md>), [Code](<https://devfeed.tech/topics/code.md>), [function](<https://devfeed.tech/topics/function.md>)

Tags: [callback](<https://devfeed.tech/tags/callback.md>), [dependency](<https://devfeed.tech/tags/dependency.md>), [documentation](<https://devfeed.tech/tags/documentation.md>), [function](<https://devfeed.tech/tags/function.md>), [guide](<https://devfeed.tech/tags/guide.md>), [systems](<https://devfeed.tech/tags/systems.md>)

## AI overview

This article examines flake-utils as a dependency for reducing repetition when declaring Nix Flake outputs across systems. It discusses obscurity around default systems and argues that a simple custom function can often provide the needed behavior without flake-utils.

## Source excerpt

Let's look at flake-utils' hidden downsides! This guide quickly demystifies it through simple rewrite, offering insights you likely haven't encountered before.