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257 lines
11 KiB
Markdown
257 lines
11 KiB
Markdown
# Powerlevel10k
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Powerlevel10k is a theme for ZSH. It's a backward-compatible modern reimplementation of
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[Powerlevel9k](https://github.com/bhilburn/powerlevel9k) with lower latency, better
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prompt responsiveness and scores of extra features.
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Powerlevel10k can be used as a drop-in replacement for Powerlevel9k. When given the same
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configuration options it will generate
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[the same](#does-powerlevel10k-always-render-exactly-the-same-prompt-as-powerlevel9k-given-the-same-config)
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prompt. It will be [much faster](#is-it-really-fast) though.
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## Table of Contents
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1. [Installation](#installation)
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1. [Manual](#manual)
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1. [Oh My Zsh](#oh-my-zsh)
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1. [Prezto](#prezto)
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1. [Antigen](#antigen)
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1. [Zplug](#zplug)
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1. [Zgen](#zgen)
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1. [Antibody](#antibody)
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1. [Configuration](#configuration)
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1. [For new users](#for-new-users)
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1. [For existing users](#for-existing-users)
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1. [Fonts](#fonts)
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1. [Try it in Docker](#try-it-in-docker)
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1. [Is it really faster?](#is-it-really-fast)
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1. [License](#license)
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1. [FAQ](#faq)
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1. [Why does Powerlevel10k spawn extra processes?](#why-does-powerlevel10k-spawn-extra-processes)
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1. [Are there configuration options that make Powerlevel10k slow?](#are-there-configuration-options-that-make-powerlevel10k-slow)
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1. [Is Powerlevel10k fast to load?](#is-powerlevel10k-fast-to-load)
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1. [Does Powerlevel10k always render exactly the same prompt as Powerlevel9k given the same config?](#does-powerlevel10k-always-render-exactly-the-same-prompt-as-powerlevel9k-given-the-same-config)
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1. [I am getting an error: "zsh: bad math expression: operand expected at end of string"](#i-am-getting-an-error-zsh-bad-math-expression-operand-expected-at-end-of-string)
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1. [Is there an AUR package for Powerlevel10k?](#is-there-an-aur-package-for-powerlevel10k)
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1. [I cannot make Powerlevel10k work with my plugin manager. Help!](#i-cannot-make-powerlevel10k-work-with-my-plugin-manager-help)
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1. [What is the minimum supported ZSH version?](#what-is-the-minimum-supported-zsh-version)
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## Installation
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### Manual
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```zsh
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git clone https://github.com/romkatv/powerlevel10k.git ~/powerlevel10k
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echo 'source ~/powerlevel10k/powerlevel10k.zsh-theme' >>! ~/.zshrc
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```
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This is the simplest kind of installation and it works even if you are using a plugin manager. Just
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make sure to disable your current theme in your plugin manager. See
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[FAQ](#i-cannot-make-powerlevel10k-work-with-my-plugin-manager-help) for help.
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### Oh My Zsh
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```zsh
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git clone https://github.com/romkatv/powerlevel10k.git $ZSH_CUSTOM/themes/powerlevel10k
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```
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Set `ZSH_THEME=powerlevel10k/powerlevel10k` in your `~/.zshrc`.
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### Prezto
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Add `zstyle :prezto:module:prompt theme powerlevel10k` to your `~/.zpreztorc`.
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### Antigen
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Add `antigen theme romkatv/powerlevel10k` to your `~/.zshrc`. Make sure you have `antigen apply`
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somewhere after it.
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### Zplug
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Add `zplug romkatv/powerlevel10k, use:powerlevel10k.zsh-theme` to your `~/.zshrc`.
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### Zgen
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Add `zgen load romkatv/powerlevel10k powerlevel10k` to your `~/.zshrc`.
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### Antibody
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Add `antibody bundle romkatv/powerlevel10k` to your `~/.zshrc`.
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## Configuration
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### For new users
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If you are new to Powerlevel10k/9k and don't have your own config yet, start with the
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[lean](https://github.com/romkatv/powerlevel10k/blob/master/config/p10k-lean.zsh) style.
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```zsh
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curl -fsSL -O ~/p10k-lean.zsh https://raw.githubusercontent.com/romkatv/powerlevel10k/master/config/p10k-lean.zsh
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echo 'source ~/p10k-lean.zsh' >>! ~/.zshrc
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```
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To customize your prompt, open `~/p10k-lean.zsh` in your favorite text editor, change it and restart
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ZSH. The file is well-documented.
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### For existing users
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If you've been using Powerlevel9k before, **do not remove the configuration options**. Powerlevel10k
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will pick them up and provide you with the same prompt UI you are used to. Powerlevel10k recognized
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all configuration options used by Powerlevel9k. See Powerlevel9k
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[configuration guide](https://github.com/bhilburn/powerlevel9k#prompt-customization).
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If you aren't completely satisfied with your prompt or looking for something fresh, try
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[lean](https://github.com/romkatv/powerlevel10k/blob/master/config/p10k-lean.zsh) config.
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## Fonts
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Depending on your configuration, you might need to install a Powerline font. Follow the
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[font installation guide](https://github.com/bhilburn/powerlevel9k/wiki/Install-Instructions#step-2-install-a-powerline-font)
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from Powerlevel9k.
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[Lean](https://github.com/romkatv/powerlevel10k/blob/master/config/p10k-lean.zsh) config doesn't
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require custom fonts. It'll work even with regular system fonts. If you are having trouble with
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Powerline fonts, try this config.
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## Try it in Docker
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Try Powerlevel10k in Docker. You can safely make any changes to the file system while trying out
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the theme. Once you exit zsh, the image is deleted.
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```zsh
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docker run -e LANG=C.UTF-8 -e LC_ALL=C.UTF-8 -e TERM -it --rm ubuntu bash -uexc '
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cd && apt update && apt install -y zsh git
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git clone --depth 1 https://github.com/romkatv/powerlevel10k.git
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echo "source ~/powerlevel10k/config/p10k-lean.zsh" >>~/.zshrc
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echo "source ~/powerlevel10k/powerlevel10k.zsh-theme" >>~/.zshrc
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cd ~/powerlevel10k
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exec zsh'
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```
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## Is it really fast?
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Yes.
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[](https://asciinema.org/a/NHRjK3BMePw66jtRVY2livHwZ)
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Benchmark results obtained with
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[zsh-prompt-benchmark](https://github.com/romkatv/zsh-prompt-benchmark) on Intel i9-7900X
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running Ubuntu 18.04 with the config from the demo.
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| Theme | Prompt Latency |
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|---------------------|---------------:|
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| powerlevel9k/master | 1046 ms |
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| powerlevel9k/next | 1005 ms |
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| **powerlevel10k** | **8.7 ms** |
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Powerlevel10k is over 100 times faster than Powerlevel9k in this benchmark.
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In fairness, Powerlevel9k has acceptable latency when given a spartan configuration. If all you need
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is the current directory without truncation or shortening, Powerlevel9k can render it for you in
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17 ms. Powerlevel10k can do the same 30 times faster but it won't matter in practice because 17 ms
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is fast enough (the threshold where latency becomes noticeable is around 50 ms). You have to be
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careful with Powerlevel9k configuration as it's all too easy to make prompt frustratingly slow.
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Powerlevel10k, on the other hand, doesn't require trading latency for utility -- it's virtually
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instant with any configuration. It stays way below the 50 ms mark, leaving most of the latency
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budget for other plugins you might install.
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## License
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Powerlevel10k is released under the
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[MIT license](https://github.com/romkatv/powerlevel10k/blob/master/LICENSE). Contributions are
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covered by the same license.
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## FAQ
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### Why does Powerlevel10k spawn extra processes?
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Powerlevel10k uses [gitstatus](https://github.com/romkatv/gitstatus) as the backend behind `vcs`
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prompt; gitstatus spawns `gitstatusd` and `zsh`. See
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[gitstatus](https://github.com/romkatv/gitstatus) for details. Powerlevel10k may also spawn `zsh`
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to trigger async prompt refresh.
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### Are there configuration options that make Powerlevel10k slow?
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No, Powerlevel10k is always fast, with any configuration you throw at it. If you have noticeable
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prompt latency when using Powerlevel10k, please
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[open an issue](https://github.com/romkatv/powerlevel10k/issues).
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### Is Powerlevel10k fast to load?
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The short answer is no. The amount of time it takes for Powerlevel10k to render the first prompt
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is in the same ballpark as for Powerlevel9k.
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Time to first prompt can be measured with the following benchmark:
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```zsh
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time (repeat 100 zsh -dfis <<< 'source ~/powerlevel10k/powerlevel10k.zsh-theme')
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```
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On the same machine as in the [prompt benchmark](#is-it-really-fast) this results in 147 ms per
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invocation when executed in a small git repository (I used the `powerlevel10k` repo itself). For
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comparison, the same benchmark gives 170 ms for powerlevel9k/master and 505 ms for
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powerlevel9k/next.
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If your workflow requires that you open a terminal tab, type a command or two and close the tab,
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Powerlevel10k isn't the best choice. Powerlevel10k is optimized for long-lived ZSH sessions.
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### Does Powerlevel10k always render exactly the same prompt as Powerlevel9k given the same config?
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This is the goal. You should be able to switch between Powerlevel9k and Powerlevel10k with no
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visible changes except for performance. There are, however, several differences.
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* By default only git vcs backend is enabled in Powerlevel10k. If you need svn and hg, you'll
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need to set `POWERLEVEL9K_VCS_BACKENDS`.
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* Fewer configuration options can be changed after the theme is loaded. For example, if you
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decide to change background color of some segment in the middle of an interactive ZSH session,
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it may not work.
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If you notice any other differences between prompts in Powerlevel9k and Powerlevel10k when running
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with the same settings, please [open an issue](https://github.com/romkatv/powerlevel10k/issues).
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### I am getting an error: "zsh: bad math expression: operand expected at end of string"
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Did you change any `POWERLEVEL9K` options after the first prompt got rendered, perhaps by editing
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your `~/.zshrc` and executing `source ~/.zshrc`? This isn't supported. You'll need to restart zsh
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for configuration changes to take effect. Run `exec zsh` to do this without forking a process.
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### Is there an AUR package for Powerlevel10k?
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Yes, [zsh-theme-powerlevel10k-git](https://aur.archlinux.org/packages/zsh-theme-powerlevel10k-git/).
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This package is owned by an unaffiliated volunteer.
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### I cannot make Powerlevel10k work with my plugin manager. Help!
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If the [installation instructions](#installation) didn't work for you, try disabling your current
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theme (so that you end up with no theme) and then installing Powerlevel10k manually.
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1. Disable the current theme in your framework / plugin manager.
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* **zplug:** Open `~/.zshrc` and remove the `zplug` command that refers to your current theme. For
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example, if you are currently using Powerlevel9k, look for
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`zplug bhilburn/powerlevel9k, use:powerlevel9k.zsh-theme`.
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* **prezto:** Open `~/.zpreztorc` and put `zstyle :prezto:module:prompt theme off` in it. Remove
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any other command that sets `theme` such as `zstyle :prezto:module:prompt theme powerlevel9k`.
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* **oh-my-zsh:** Open `~/.zshrc` and remove the line that sets `ZSH_THEME`, such as
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`ZSH_THEME=powerlevel9k/powerlevel9k`.
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* **antigen:** Open `~/.zshrc` and remove the line that sets `antigen theme`, such as
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`antigen theme bhilburn/powerlevel9k powerlevel9k`.
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2. Install Powerlevel10k manually.
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```zsh
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git clone https://github.com/romkatv/powerlevel10k.git ~/powerlevel10k
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echo 'source ~/powerlevel10k/powerlevel10k.zsh-theme' >>! ~/.zshrc
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```
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This method of installation won't make anything slower or otherwise sub-par.
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### What is the minimum supported ZSH version?
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ZSH 5.1 or newer should work.
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However, there are too many version, OS, platform, terminal and option configurations to test. If
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Powerlevel10k doesn't work for you, please open an issue.
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