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docs: add asciinema comparing p9k and p10k perf; shorten some sections
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148
README.md
148
README.md
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@ -10,40 +10,38 @@ simply replace it with Powerlevel10k and enjoy responsive shell like it's 80's a
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Powerlevel10k is a drop-in replacement for Powerlevel9k. It uses the same configuration options as
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Powerlevel9k and produces the same results
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[[*]](#does-powerlevel10k-always-render-exactly-the-same-prompt-with-the-same-config).
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It's simply [much faster](#how-fast-is-it).
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It's simply [much faster](#is-it-really-faster).
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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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2. [Oh My Zsh](#oh-my-zsh)
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3. [Prezto](#prezto)
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4. [Antigen](#antigen)
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5. [Zplug](#zplug)
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6. [Zgen](#zgen)
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7. [Antibody](#antibody)
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2. [Configuration](#configuration)
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3. [Try it out](#try-it-out)
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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. [Fonts](#fonts)
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1. [Try it out](#try-it-out)
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1. [For Powerlevel9k users](#for-powerlevel9k-users)
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2. [For new users](#for-new-users)
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3. [Docker playground](#docker-playground)
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4. [How fast is it?](#how-fast-is-it)
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5. [License](#license)
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6. [FAQ](#faq)
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1. [For new users](#for-new-users)
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1. [Docker playground](#docker-playground)
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1. [Is it really faster?](#is-it-really-faster)
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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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2. [Does Powerlevel10k always render exactly the same prompt with the same config?](#does-powerlevel10k-always-render-exactly-the-same-prompt-with-the-same-config)
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3. [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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3. [Are changes getting up/down-streamed?](#are-changes-getting-updown-streamed)
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4. [Is there an AUR package for Powerlevel10k?](#is-there-an-aur-package-for-powerlevel10k)
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5. [I cannot make Powerlevel10k work with my plugin manager. Help!](#i-cannot-make-powerlevel10k-work-with-my-plugin-manager-help)
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6. [What is the minimum supported zsh version?](#what-is-the-minimum-supported-zsh-version)
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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. [Does Powerlevel10k always render exactly the same prompt with the same config?](#does-powerlevel10k-always-render-exactly-the-same-prompt-with-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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If you don't yet have a Powerline font installed, 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. Once you have a working Powerline font installed, proceed with the installation
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of Powerlevel10k as described below.
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Installation is virtually the same as in Powerlevel9k. If you managed to install Powerlevel9k, you'll be able to install Powerlevel10k.
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### Manual
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@ -88,8 +86,9 @@ Add `antibody bundle romkatv/powerlevel10k` to your `~/.zshrc`.
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## Configuration
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Powerlevel10k recognized all configuration options used by Powerlevel9k. See Powerlevel9k
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[configuration guide](https://github.com/bhilburn/powerlevel9k#prompt-customization) for the full
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list.
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[configuration guide](https://github.com/bhilburn/powerlevel9k#prompt-customization). Powerlevel10k
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has a few
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[extensions](https://github.com/romkatv/powerlevel10k/blob/master/EXTENDED_CONFIGURATION.md).
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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.
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@ -115,8 +114,15 @@ Read the documentation at the top of `~/.purepower` (or
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[here](https://github.com/romkatv/dotfiles-public/blob/master/.purepower)) to get an idea of what
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your prompt is capable of. You can edit the file to change your Powerlevel10k configuration.
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Powerlevel10k has a few configuration options that Powerlevel9k doesn't. See
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[extended configuration](https://github.com/romkatv/powerlevel10k/blob/master/EXTENDED_CONFIGURATION.md).
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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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[Pure Power](https://github.com/romkatv/dotfiles-public/blob/master/.purepower) 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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patched fonts, try Pure Power.
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## Try it out
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@ -126,7 +132,7 @@ switch.
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### For Powerlevel9k users
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If you are currently using Powerlevel9k, you can try Powerlevel10k in a temporary zsh shell. The
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If you are currently using Powerlevel9k, you can try Powerlevel10k in a temporary zsh session. The
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prompt will look exactly like what you are used to but it'll be faster.
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```zsh
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@ -167,59 +173,30 @@ docker run -e LANG=C.UTF-8 -e LC_ALL=C.UTF-8 -e TERM=$TERM -it --rm ubuntu bash
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exec zsh'
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```
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## How fast is it?
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## Is it really fast?
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Powerlevel10k renders prompt between 10 and 100 times faster than powerlevel9k.
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Yes.
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Here are benchmark results obtained with
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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.
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running Ubuntu 18.04 with the config from the demo.
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| Theme | / | ~/linux |
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|---------------------|----------:| ---------:|
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| powerlevel9k/master | 101 ms | 280 ms |
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| powerlevel9k/next | 26 ms | 255 ms |
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| **powerlevel10k** | **1 ms** | **22 ms** |
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| naked zsh | 0.05 ms | 0.05 ms |
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Columns define the current directory where the prompt was rendered.
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* `/` -- root directory, not a git repo.
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* `~/linux` -- [linux](https://github.com/torvalds/linux) git repo with 60k files. It was checked
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out to an M.2 SSD.
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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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powerlevel9k/master is the stable branch of powerlevel9k, the one that virtually everyone uses.
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powerlevel9k/next is the development branch for the next release.
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Here's how the prompt looked like during benchmarking.
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It was identical in Powerlevel10k and Powerlevel9k. Even though Powerlevel10k can dynamically
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switch to async prompts, it wasn't happening during the benchmark because latencies were low.
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Prompts with both themes were essentially synchronous, with every prompt having up-to-date git info
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(no greyed-out vcs/git segments).
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Configuration that was used:
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```zsh
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POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(dir_writable dir vcs)
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POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=(status time)
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POWERLEVEL9K_MODE=nerdfont-complete
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POWERLEVEL9K_PROMPT_ON_NEWLINE=true
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POWERLEVEL9K_ROOT_ICON=$'\uF09C'
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POWERLEVEL9K_TIME_ICON=$'\uF017'
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POWERLEVEL9K_TIME_BACKGROUND=magenta
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POWERLEVEL9K_STATUS_OK_BACKGROUND=grey53
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```
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Powerlevel10k shows similar performance advantage over Powerlevel9k on Mac OS, FreeBSD, WSL, and
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Raspberry Pie.
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## License
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Powerlevel10k is released under the [MIT license](https://github.com/romkatv/powerlevel10k/blob/master/LICENSE). Contributions are convered by the same 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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convered by the same license.
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## FAQ
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@ -231,14 +208,23 @@ prompt; gitstatus spawns `gitstatusd` and `zsh`. See
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if `POWERLEVEL9K_EXPERIMENTAL_TIME_REALTIME` is set to `true`. This is used to trigger prompt
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refresh every second.
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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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### 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`. See
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[extended configuration](https://github.com/romkatv/powerlevel10k/blob/master/EXTENDED_CONFIGURATION.md).
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need to set `POWERLEVEL9K_VCS_BACKENDS`.
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* Powerlevel10k implements a few
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[extensions](https://github.com/romkatv/powerlevel10k/blob/master/EXTENDED_CONFIGURATION.md). If
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you use them, you'll get different prompt when you switch to Powerlevel9k. However, extensions
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are designed with graceful degradation in mind, so your prompt will still be functional.
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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 session,
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it may not work.
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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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### Are changes getting up/down-streamed?
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Powerlevel10k regularly pulls changes from Powerlevel9k, so all bug fixes and new features that land
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in Powerlevel9k will land here, too. This is a labor-intensive process because Powerlevel9k and
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Powerlevel10k have very different code. Thankfully, there aren't many changes in Powerlevel9k.
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Occasionally Powerlevel9k copies features and bug fixes from Powerlevel10k but this is happens
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rarely.
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Improvements to [libgit2](https://github.com/libgit2/libgit2/issues/5038)
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might eventually be upstreamed. It's a very slow 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 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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### What is the minimum supported ZSH version?
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ZSH 5.1 or newer should work.
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