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# Powerlevel10k
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Powerlevel10k is a theme for ZSH. It's a backward-compatible fork of
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[Powerlevel9k](https://github.com/bhilburn/powerlevel9k) with lower latency and better
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prompt responsiveness.
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If you like the look and feel of Powerlevel9k but feeling frustrated by the
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slow prompt, simply replace your `powerlevel9k` theme with `powerlevel10k` and
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enjoy responsive shell like it's 80's again!
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Powerlevel10k uses the same configuration options as Powerlevel9k and produces the
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same results. It's simply faster. There is no catch.
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If you are on Linux or WSL, consider enabling [gitstatus](https://github.com/romkatv/gitstatus)
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plugin for massive performance improvement in vcs/prompt segment. It works well with Powerlevel10k.
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## Installation & Configuration
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For installation and configuration instructions, see
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[Powerlevel9k](https://github.com/bhilburn/powerlevel9k). Everything in there applies to
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Powerlevel10k as well. Follow the installation guide, make sure everything works and you like
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the way prompt looks. Then simply replace `powerlevel9k.zsh-theme` with the one from Powerlevel10k
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([link](https://github.com/romkatv/powerlevel10k/blob/master/powerlevel9k.zsh-theme)). Or replace
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the whole `powerlevel9k` directory to gain the ability to `git pull` updates in the future. Once
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you restart zsh, your prompt will be faster.
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**Do not load both Powerlevel9k and Powerlevel10k themes at the same time. Variable name
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clashes will cause mayhem. Source either one or the other. Consider Powerlevel10k
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a patched fork of Powerlevel9k, which it is.**
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## How fast is it?
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Powerlevel10k with [gitstatus](https://github.com/romkatv/gitstatus) renders prompt 5+ times
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faster than Powerlevel9k. In some cases it can be over 10 times faster. When using Linux,
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you should expect less than 50ms prompt latency in most cases, about 100ms in large git
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repos and 200ms in huge repos such as Linux kernel. To get comfortable upper bound on
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latency in any repo, set `GITSTATUS_DIRTY_MAX_INDEX_SIZE=4096`. It'll disable dirty file
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scanning in repos with over 4k files. This should give you under 100ms prompt latency
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everywhere.
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## What's the catch?
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Really, there is no catch. It's the same prompt with the same flexibility and literally the
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same configuration as Powerlevel9k but **much faster**.
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