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261 lines
11 KiB
Markdown
261 lines
11 KiB
Markdown
# 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 looks of Powerlevel9k but feeling frustrated by its slow prompt,
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simply replace your `powerlevel9k` theme with `powerlevel10k` and enjoy responsive
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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 [[*]](#does-powerlevel10k-always-render-exactly-the-same-prompt-with-the-same-config).
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It's simply faster.
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## Table of Contents
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1. [Installation and configuration](#installation-and-configuration)
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1. [Manual installation](#manual-installation)
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2. [Extra configuration](#extra-configuration)
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2. [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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3. [How fast is it?](#how-fast-is-it)
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4. [FAQ](#faq)
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1. [Why does Powerlevel10k spawn two extra processes?](#why-does-powerlevel10k-spawn-two-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. [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. [How do I use Powerlevel10k with zplug, prezto, oh-my-zsh, antigen, somethingelse?](#how-do-i-use-powerlevel10k-with-zplug-prezto-oh-my-zsh-antigen-somethingelse)
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5. [What is the minimum supported zsh version?](#what-is-the-minimum-supported-zsh-version)
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## Installation and 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 official installation guide, make sure everything works
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and you like the way prompt looks. Then simply replace Powerlevel9k with Powerlevel10k. Once
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you restart zsh, your prompt will be faster. No configuration changes are needed.
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### Manual installation
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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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If you are using a framework / plugin manager and need help translating these instruction into its
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configuration language, see [FAQ](#faq).
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Make sure to disable your current theme.
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### Extra configuration
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Powerlevel10k has a handful of configuration options that Powerlevel9k doesn't have. They
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are still using the `POWERLEVEL9K` prefix though.
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* `POWERLEVEL9K_VCS_MAX_SYNC_LATENCY_SECONDS (FLOAT) [default=0.05]`
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If it takes longer than this to fetch git repo status, display the prompt with a greyed out
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vcs segment and fix it asynchronously when the results come it.
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* `POWERLEVEL9K_VCS_BACKENDS (ARRAY) [default=(git)]`
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The list of VCS backends to use. Supported values are `git`, `svn` and `hg`. Note that adding
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anything other than git will make prompt slower even when your current directory isn't a repo.
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* `POWERLEVEL9K_GITSTATUS_DIR (STRING) [default=$POWERLEVEL9K_INSTALLATION_DIR/gitstatus]`
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Directory with gitstatus plugin. By default uses a copy bundled with Powerlevel10k.
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* `POWERLEVEL9K_DISABLE_GITSTATUS (STRING) [default="false"]`
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If set to `"true"`, Powerlevel10k won't use its fast git backend and will fall back to
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`vcs_info` like Powerlevel9k.
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* `POWERLEVEL9K_MAX_CACHE_SIZE (INT) [default=10000]`
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The maximum number of elements that can be stored in the cache. When the cache grows over this
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limit, it gets cleared.
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* `POWERLEVEL9K_VCS_MAX_INDEX_SIZE_DIRTY (INT) [default=-1]`
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Don't scan for dirty files in git repos with more files in the index than this. Instead, show
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them with the "dirty" color (yellow by default) whether they are dirty or not. This makes git
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prompt much faster on huge repositories.
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* `POWERLEVEL9K_EXPERIMENTAL_TIME_REALTIME (STRING) [default="false"]`
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If set to `"true"`, `time` segment will update every second, turning into a realtime clock.
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This option appears to trigger a
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[bug in completion menu](https://www.zsh.org/mla/workers//2019/msg00161.html) in zsh.
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## Try it out
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Try Powerlevel10k without making any changes to your setup. If you like it, see
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[Installation and configuration](#installation-and-configuration) for how to make a permanent
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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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prompt will look exactly like what you are used to but it'll be faster.
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```zsh
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git clone https://github.com/romkatv/powerlevel10k.git /tmp/powerlevel10k
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source /tmp/powerlevel10k/powerlevel10k.zsh-theme
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```
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When you are done playing, `rm -rf /tmp/powerlevel10k` and exit zsh.
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### For new users
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```zsh
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git clone https://github.com/romkatv/powerlevel10k.git /tmp/powerlevel10k
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echo "
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# Your prompt configuration goes here.
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POWERLEVEL9K_PROMPT_ON_NEWLINE=true
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POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(root_indicator dir_writable dir vcs)
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POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=(status command_execution_time background_jobs time)
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source /tmp/powerlevel10k/powerlevel10k.zsh-theme" >/tmp/powerlevel10k/.zshrc
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ZDOTDIR=/tmp/powerlevel10k zsh
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```
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When you are done playing, `rm -rf /tmp/powerlevel10k` and exit zsh.
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### Docker playground
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You can try Powerlevel10k in Docker (Linux only). 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=$TERM -it --rm ubuntu bash -uexc '
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apt update && apt install -y zsh git
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git clone https://github.com/romkatv/powerlevel10k.git ~/powerlevel10k
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echo "
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# Your prompt configuration goes here.
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POWERLEVEL9K_PROMPT_ON_NEWLINE=true
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POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(root_indicator dir_writable dir vcs)
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POWERLEVEL9K_RIGHT_PROMPT_ELEMENTS=(status command_execution_time background_jobs time)
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source ~/powerlevel10k/powerlevel10k.zsh-theme" >~/.zshrc
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cd ~/powerlevel10k
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zsh -i'
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```
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## How fast is it?
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Powerlevel10k renders prompt between 10 and 100 times faster than powerlevel9k.
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Here are 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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| 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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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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## 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 spawns another `zsh`
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if `POWERLEVEL9K_EXPERIMENTAL_TIME_REALTIME` is set to `true` or `background_jobs` segment is
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enabled. This is used to trigger prompt refresh.
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### Does Powerlevel10k always render exactly the same prompt with 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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* Git prompt in Powerlevel10k doesn't show tags and revisions. Open an issue if you need them.
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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 [Extra configuration](#extra-configuration).
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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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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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### 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.
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There is ongoing work on upstreaming some of the changes from Powerlevel10k to Powerlevel9k. E.g.,
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issues [1170](https://github.com/bhilburn/powerlevel9k/issues/1170) and
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[1185](https://github.com/bhilburn/powerlevel9k/issues/1185).
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Improvements to [libgit2](https://github.com/libgit2/libgit2/issues/4230#issuecomment-471710359) are
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being upstremed. There are 3 independent optimizations and it's not yet clear whether all of them
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will make it but there is a good chance they will.
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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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### How do I use Powerlevel10k with zplug, prezto, oh-my-zsh, antigen, somethingelse?
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If you have to ask, then the easiest way is to disable the current theme (so that you end up with
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no theme) and then install Powerlevel10k the usual way.
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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 the usual way.
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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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### What is the minimum supported zsh version?
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Anything below 5.2 definitely won't work. 5.4 definitely will.
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