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[python] Detect actual pip command available for generating completion cache

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We cannot always assume availability of `pip`, it can be `pip2` or `pip3`
instead. We detect the first available one and use it for generating the
completion cache.
This commit is contained in:
Indrajit Raychaudhuri 2017-07-22 13:01:43 -05:00 committed by Indrajit Raychaudhuri
parent 608f291ad3
commit bcbaea27af
1 changed files with 8 additions and 3 deletions
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11
modules/python/init.zsh
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@ -106,16 +106,21 @@ if zstyle -T ':prezto:module:python' skip-virtualenvwrapper-init; then
fi
# Load PIP completion.
if (( $+commands[pip] )); then
if (( $#commands[(i)pip(|[23])] )); then
cache_file="${0:h}/cache.zsh"
if [[ "$commands[pip]" -nt "$cache_file" || ! -s "$cache_file" ]]; then
# Detect and use first one available among 'pip', 'pip2', 'pip3' variants
pip_command="$commands[(i)pip(|[23])]"
if [[ "$pip_command" -nt "$cache_file" || ! -s "$cache_file" ]]; then
# pip is slow; cache its output. And also support 'pip2', 'pip3' variants
pip completion --zsh | sed -e "s|compctl -K [-_[:alnum:]]* pip|& pip2 pip3|" >! "$cache_file" 2> /dev/null
$pip_command completion --zsh \
| sed -e "s|compctl -K [-_[:alnum:]]* pip|& pip2 pip3|" >! "$cache_file" 2> /dev/null
fi
source "$cache_file"
unset cache_file
unset pip_command
fi
#