92 lines
2.5 KiB
Text
92 lines
2.5 KiB
Text
# This command prepares the required environment variables
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def-env activate-virtualenv [] {
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def is-string [x] {
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($x | describe) == 'string'
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}
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def has-env [name: string] {
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$name in (env).name
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}
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let is-windows = ((sys).host.name | str downcase) == 'windows'
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let virtual-env = '__VIRTUAL_ENV__'
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let bin = '__BIN_NAME__'
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let path-sep = '__PATH_SEP__'
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let path-name = if $is-windows {
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if (has-env 'Path') {
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'Path'
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} else {
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'PATH'
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}
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} else {
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'PATH'
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}
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let old-path = (
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if $is-windows {
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if (has-env 'Path') {
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$env.Path
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} else {
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$env.PATH
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}
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} else {
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$env.PATH
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} | if (is-string $in) {
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# if Path/PATH is a string, make it a list
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$in | split row $path-sep | path expand
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} else {
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$in
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}
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)
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let venv-path = ([$virtual-env $bin] | path join)
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let new-path = ($old-path | prepend $venv-path | str collect $path-sep)
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# Creating the new prompt for the session
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let virtual-prompt = if ('__VIRTUAL_PROMPT__' == '') {
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$'(char lparen)($virtual-env | path basename)(char rparen) '
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} else {
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'(__VIRTUAL_PROMPT__) '
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}
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# Back up the old prompt builder
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let old-prompt-command = if (has-env 'VIRTUAL_ENV') && (has-env '_OLD_PROMPT_COMMAND') {
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$env._OLD_PROMPT_COMMAND
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} else {
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if (has-env 'PROMPT_COMMAND') {
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$env.PROMPT_COMMAND
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} else {
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''
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}
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}
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# If there is no default prompt, then only the env is printed in the prompt
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let new-prompt = if (has-env 'PROMPT_COMMAND') {
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if ($old-prompt-command | describe) == 'block' {
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{ $'($virtual-prompt)(do $old-prompt-command)' }
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} else {
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{ $'($virtual-prompt)($old-prompt-command)' }
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}
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} else {
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{ $'($virtual-prompt)' }
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}
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# Environment variables that will be batched loaded to the virtual env
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let new-env = {
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$path-name : $new-path
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VIRTUAL_ENV : $virtual-env
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_OLD_VIRTUAL_PATH : ($old-path | str collect $path-sep)
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_OLD_PROMPT_COMMAND : $old-prompt-command
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PROMPT_COMMAND : $new-prompt
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VIRTUAL_PROMPT : $virtual-prompt
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}
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# Activate the environment variables
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load-env $new-env
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}
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# Activate the virtualenv
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activate-virtualenv
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alias pydoc = python -m pydoc
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alias deactivate = source '__DEACTIVATE_PATH__'
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