alien

alien theme is faster than a lot other themes.

Why? It updates part of the prompt asyncronously - the time consuming processings like git status checking, git dirty copy checking etc.

How? It starts a background job for these process, and in the mean time draws initial prompt and lets you use the terminal as you would normally.

alien theme is independent of any library like Oh-My-Zsh or Prezto. Whatever it needs already included inside. The only exception is font. You need to install the powerline patched fonts to properly display the prompt.

Asciicast v2.0.0

Requirements

• zsh (obviously)
• powerline patched fonts see here

Installation

Add the following line to your .zshrc depending on your zsh plugin manager

antigen:

antigen theme eendroroy/alien alien

zgen:

zgen load eendroroy/alien

zplug:

zplug "eendroroy/alien"

oh-my-zsh: Overriding and Adding Themes

Manually cloning

git clone https://github.com/eendroroy/alien.git
cd alien
git submodule update --init --recursive --remote

Add the following line to your ~/.zshrc

source ~/alien/alien.zsh

Configuration

add all configurations before plugin definitions (or sourcing the theme)

sections

To define the order of sections to display:

export ALIEN_SECTIONS_LEFT=(
  exit
  battery
  user
  path
  newline
  ssh
  venv
  prompt
)

export ALIEN_SECTIONS_RIGHT=(
  time
)

To define if sections are to be loaded asyncronously add :async to the section-name:

export ALIEN_SECTIONS_LEFT=(
  exit
  battery
  user
  path
  vcs_branch:async
  vcs_status:async
  vcs_dirty:async
  newline
  ssh
  venv
  prompt
)

section seperator

To change the section-separator:

export ALIEN_SECTIONS_LEFT_SEP_SYM=
export ALIEN_SECTIONS_RIGHT_SEP_SYM=

prompt-section

To change the symbol of the input-prompt:

export ALIEN_PROMPT_SYM=

To change colors:

export ALIEN_PROMPT_FG=100

exit-section

To disable the numeric exit-code:

export ALIEN_SECTION_EXIT_CODE=0

To change colors:

export ALIEN_SECTION_EXIT_FG=100
export ALIEN_SECTION_EXIT_BG=150
export ALIEN_SECTION_EXIT_BG_ERROR=200

time-section

To change the format::

export ALIEN_SECTION_TIME_FORMAT=%H:%M:%S # default is %r

To change colors:

export ALIEN_SECTION_TIME_FG=100
export ALIEN_SECTION_TIME_BG=150

battery-section

To change colors:

export ALIEN_SECTION_BATTERY_FG=100
export ALIEN_SECTION_BATTERY_BG=150

user-section

To show the hostname:

export ALIEN_SECTION_USER_HOST=1

To change colors:

export ALIEN_SECTION_USER_FG=100
export ALIEN_SECTION_USER_BG=150

path-section

To change the number of path-components to display:

export ALIEN_SECTION_PATH_COMPONENTS=2

To change colors:

export ALIEN_SECTION_PATH_FG=100
export ALIEN_SECTION_PATH_BG=150

vcs_branch-section

To change colors:

export ALIEN_SECTION_VCS_BRANCH_FG=100
export ALIEN_SECTION_VCS_BRANCH_BG=150

vcs_status-section

To change colors:

export ALIEN_SECTION_VCS_STATUS_FG=100
export ALIEN_SECTION_VCS_STATUS_BG=150

vcs_dirty-section

To change colors:

export ALIEN_SECTION_VCS_DIRTY_FG=100
export ALIEN_SECTION_VCS_DIRTY_BG=150

versions-section

Define versions to show:

export ALIEN_VERSIONS_PROMPT='PYTHON_S RUBY_S NODE_S'

Supported versions: PYTHON PYTHON_S RUBY RUBY_S JAVA JAVA_S GO GO_S ELIXIR ELIXIR_S CRYSTAL CRYSTAL_S NODE NODE_S PHP PHP_S

color scheme

you can chose from 6 different color schemes (blue is the default)

in ~/.zshrc just add any from the following three lines before your antigen theme ... line

export ALIEN_THEME="blue"

export ALIEN_THEME="green"

export ALIEN_THEME="red"

export ALIEN_THEME="soft"

export ALIEN_THEME="gruvbox"

export ALIEN_THEME="bnw"

Custom Color

ALIEN_PROMPT_FG=87
ALIEN_SECTION_EXIT_FG=0
ALIEN_SECTION_EXIT_BG=87
ALIEN_SECTION_EXIT_BG_ERROR=202
ALIEN_SECTION_TIME_FG=0
ALIEN_SECTION_TIME_BG=193
ALIEN_SECTION_BATTERY_FG=0
ALIEN_SECTION_BATTERY_BG=193
ALIEN_SECTION_USER_FG=0
ALIEN_SECTION_USER_BG=87
ALIEN_SECTION_PATH_FG=0
ALIEN_SECTION_PATH_BG=45
ALIEN_SECTION_VCS_BRANCH_FG=87
ALIEN_SECTION_VCS_BRANCH_BG=238
ALIEN_SECTION_VCS_STATUS_FG=87
ALIEN_SECTION_VCS_STATUS_BG=238
ALIEN_SECTION_VCS_DIRTY_FG=87
ALIEN_SECTION_VCS_DIRTY_BG=238
ALIEN_SECTION_SSH_FG=238
ALIEN_SECTION_VENV_FG=238
ALIEN_GIT_TRACKED_COLOR=193
ALIEN_GIT_UN_TRACKED_COLOR=87
ALIEN_SECTION_VERSION_BG=237
ALIEN_PYTHON_COLOR=40
ALIEN_RUBY_COLOR=196
ALIEN_JAVA_COLOR=178
ALIEN_GO_COLOR=81
ALIEN_ELIXIR_COLOR=99
ALIEN_CRYSTAL_COLOR=8
ALIEN_NODE_COLOR=41
ALIEN_PHP_COLOR=57

Or creating a new theme file:

/path/to/custom/theme.zsh

#!/usr/bin/env zsh

alien_theme(){
  ALIEN_PROMPT_FG=87
  ALIEN_SECTION_EXIT_FG=0
  ALIEN_SECTION_EXIT_BG=87
  ALIEN_SECTION_EXIT_BG_ERROR=202
  ALIEN_SECTION_TIME_FG=0
  ALIEN_SECTION_TIME_BG=193
  ALIEN_SECTION_BATTERY_FG=0
  ALIEN_SECTION_BATTERY_BG=193
  ALIEN_SECTION_USER_FG=0
  ALIEN_SECTION_USER_BG=87
  ALIEN_SECTION_PATH_FG=0
  ALIEN_SECTION_PATH_BG=45
  ALIEN_SECTION_VCS_BRANCH_FG=87
  ALIEN_SECTION_VCS_BRANCH_BG=238
  ALIEN_SECTION_VCS_STATUS_FG=87
  ALIEN_SECTION_VCS_STATUS_BG=238
  ALIEN_SECTION_VCS_DIRTY_FG=87
  ALIEN_SECTION_VCS_DIRTY_BG=238
  ALIEN_SECTION_SSH_FG=238
  ALIEN_SECTION_VENV_FG=238
  ALIEN_GIT_TRACKED_COLOR=193
  ALIEN_GIT_UN_TRACKED_COLOR=87
  ALIEN_SECTION_VERSION_BG=237
  ALIEN_PYTHON_COLOR=40
  ALIEN_RUBY_COLOR=196
  ALIEN_JAVA_COLOR=178
  ALIEN_GO_COLOR=81
  ALIEN_ELIXIR_COLOR=99
  ALIEN_CRYSTAL_COLOR=8
  ALIEN_NODE_COLOR=41
  ALIEN_PHP_COLOR=57
}

Then activate the theme using:

export ALIEN_CUSTOM_THEME_PATH=/path/to/custom/theme.zsh

Keep previous PROMPT:

export ALIEN_KEEP_PROMPT=1

This will keep previous prompt while new prompt is being rendered.

nerd font

Enable Nerd Font

export ALIEN_USE_NERD_FONT=1

Note: Nerd fonts

promptlib-zsh Configs:

customize symbols

export ALIEN_GIT_STASH_SYM=@
export ALIEN_GIT_SYM=G
export ALIEN_HG_SYM=H
export ALIEN_SVN_SYM=S
export ALIEN_BRANCH_SYM=
export ALIEN_GIT_ADD_SYM=+
export ALIEN_GIT_DEL_SYM=-
export ALIEN_GIT_MOD_SYM=⭑
export ALIEN_GIT_NEW_SYM=?
export ALIEN_GIT_PUSH_SYM=↑
export ALIEN_GIT_PULL_SYM=↓
export ALIEN_JAVA_SYM='JAVA:'
export ALIEN_PY_SYM='PY:'
export ALIEN_RB_SYM='RB:'
export ALIEN_GO_SYM='GO:'
export ALIEN_ELIXIR_SYM='EX:'
export ALIEN_CRYSTAL_SYM='CR:'
export ALIEN_NODE_SYM='⬡ '
export ALIEN_PHP_SYM='PHP:'

Note: this overrides ALIEN_USE_NERD_FONT configuration.

Libraries Used

• '256color' by @chrissicool
• 'zsh-async' by @mafredri
• 'promptlib-zsh' by @eendroroy

Author

• indrajit - Owner - eendroroy

Contributing

Bug reports and pull requests are welcome on GitHub at alien repository. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

1. Fork it ( https://github.com/eendroroy/alien/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request

License

The project is available as open source under the terms of the MIT License.