mirror of
https://github.com/pyenv/pyenv.git
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9368bebc35
This is only meant to be an example. There's a lot of simplification that works because my usage of Pyenv is simple.
306 lines
6.9 KiB
Bash
Executable file
306 lines
6.9 KiB
Bash
Executable file
#!/usr/bin/env bash
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# Summary: Configure the shell environment for pyenv
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# Usage: eval "$(pyenv init [-|--path] [--no-push-path] [--detect-shell] [--no-rehash] [<shell>])"
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set -e
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[ -n "$PYENV_DEBUG" ] && set -x
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# Provide pyenv completions
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if [ "$1" = "--complete" ]; then
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echo -
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echo --path
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echo --no-push-path
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echo --no-rehash
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echo --detect-shell
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echo bash
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echo fish
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echo ksh
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echo zsh
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exit
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fi
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mode="help"
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no_rehash=""
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no_push_path=""
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for args in "$@"
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do
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if [ "$args" = "-" ]; then
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mode="print"
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shift
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elif [ "$args" = "--path" ]; then
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mode="path"
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shift
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elif [ "$args" = "--detect-shell" ]; then
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mode="detect-shell"
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shift
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elif [ "$args" = "--no-push-path" ]; then
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no_push_path=1
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shift
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elif [ "$args" = "--no-rehash" ]; then
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no_rehash=1
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shift
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fi
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done
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shell="$1"
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if [ -z "$shell" ]; then
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shell="$(ps -p "$PPID" -o 'args=' 2>/dev/null || true)"
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shell="${shell%% *}"
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shell="${shell##-}"
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shell="${shell:-$SHELL}"
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shell="${shell##*/}"
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shell="${shell%%-*}"
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fi
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root="${0%/*}/.."
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function main() {
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case "$mode" in
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"help")
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help_
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exit 1
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;;
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"path")
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print_path
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print_rehash
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exit 0
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;;
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"print")
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init_dirs
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print_path
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print_env
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print_completion
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print_rehash
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print_shell_function
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exit 0
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;;
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"detect-shell")
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detect_profile 1
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print_detect_shell
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exit 0
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;;
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esac
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# should never get here
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exit 2
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}
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function detect_profile() {
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local detect_for_detect_shell="$1"
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case "$shell" in
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bash )
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if [ -e '~/.bash_profile' ]; then
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profile='~/.bash_profile'
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else
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profile='~/.profile'
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fi
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profile_explain="~/.bash_profile if it exists, otherwise ~/.profile"
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rc='~/.bashrc'
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;;
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zsh )
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profile='~/.zprofile'
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rc='~/.zshrc'
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;;
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ksh | ksh93 | mksh )
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# There are two implementations of Korn shell: AT&T (ksh93) and Mir (mksh).
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# Systems may have them installed under those names, or as ksh, so those
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# are recognized here. The obsolete ksh88 (subsumed by ksh93) and pdksh
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# (subsumed by mksh) are not included, since they are unlikely to still
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# be in use as interactive shells anywhere.
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profile='~/.profile'
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rc='~/.profile'
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;;
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* )
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if [ -n "$detect_for_detect_shell" ]; then
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profile=
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rc=
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else
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profile='your shell'\''s login startup file'
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rc='your shell'\''s interactive startup file'
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fi
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;;
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esac
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}
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function print_detect_shell() {
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echo "PYENV_SHELL_DETECT=$shell"
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echo "PYENV_PROFILE_DETECT=$profile"
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echo "PYENV_RC_DETECT=$rc"
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}
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function help_() {
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detect_profile
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{
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case "$shell" in
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fish )
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echo "# Add pyenv executable to PATH by running"
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echo "# the following interactively:"
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echo
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echo 'set -Ux PYENV_ROOT $HOME/.pyenv'
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echo 'set -U fish_user_paths $PYENV_ROOT/bin $fish_user_paths'
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echo
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echo "# Load pyenv automatically by appending"
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echo "# the following to ~/.config/fish/config.fish:"
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echo
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echo 'pyenv init - | source'
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echo
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;;
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* )
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echo '# Load pyenv automatically by appending'
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echo -n "# the following to "
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if [ "$profile" == "$rc" ]; then
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echo "$profile :"
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else
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echo
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echo "# ${profile_explain:-$profile} (for login shells)"
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echo "# and $rc (for interactive shells) :"
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fi
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echo
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echo 'export PYENV_ROOT="$HOME/.pyenv"'
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echo '[[ -d $PYENV_ROOT/bin ]] && export PATH="$PYENV_ROOT/bin:$PATH"'
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echo 'eval "$(pyenv init -)"'
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;;
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esac
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echo
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echo '# Restart your shell for the changes to take effect.'
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echo
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} >&2
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}
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function init_dirs() {
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mkdir -p "${PYENV_ROOT}/"{shims,versions}
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}
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function print_path() {
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# if no_push_path is set, guard the PATH manipulation with a check on whether
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# the shim is already in the PATH.
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if [ -n "$no_push_path" ]; then
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case "$shell" in
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fish )
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echo 'if not contains -- "'"${PYENV_ROOT}/shims"'" $PATH'
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print_path_prepend_shims
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echo 'end'
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;;
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* )
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echo 'if [[ ":$PATH:" != *'\':"${PYENV_ROOT}"/shims:\''* ]]; then'
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print_path_prepend_shims
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echo 'fi'
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;;
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esac
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else
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case "$shell" in
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fish )
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echo 'while set pyenv_index (contains -i -- "'"${PYENV_ROOT}/shims"'" $PATH)'
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echo 'set -eg PATH[$pyenv_index]; end; set -e pyenv_index'
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print_path_prepend_shims
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;;
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zsh )
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echo 'stale_path=($PYENV_ROOT/shims)'
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echo 'path=(${path:|stale_path})'
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print_path_prepend_shims
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;;
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* )
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# Some distros (notably Debian-based) set Bash's SSH_SOURCE_BASHRC compilation option
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# that makes it source `bashrc` under SSH even when not interactive.
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# This is inhibited by a guard in Debian's stock `bashrc` but some people remove it
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# in order to get proper environment for noninteractive remote commands
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# (SSH provides /etc/ssh/sshrc and ~/.ssh/rc for that but no-one seems to use them for some reason).
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# This has caused an infinite `bashrc` execution loop for those people in the below nested Bash invocation (#2367).
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# --norc negates this behavior of such a customized Bash.
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echo 'PATH="$(bash --norc -ec '\''IFS=:; paths=($PATH); '
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echo 'for i in ${!paths[@]}; do '
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echo 'if [[ ${paths[i]} == "'\'\'"${PYENV_ROOT}/shims"\'\''" ]]; then unset '\'\\\'\''paths[i]'\'\\\'\''; '
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echo 'fi; done; '
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echo 'echo "${paths[*]}"'\'')"'
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print_path_prepend_shims
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;;
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esac
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fi
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}
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function print_path_prepend_shims() {
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case "$shell" in
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fish )
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echo 'set -gx PATH '\'"${PYENV_ROOT}/shims"\'' $PATH'
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;;
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zsh )
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echo 'path=($PYENV_ROOT/shims $path)'
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echo 'export PATH'
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;;
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* )
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echo 'export PATH="'"${PYENV_ROOT}"'/shims:${PATH}"'
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;;
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esac
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}
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function print_env() {
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case "$shell" in
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fish )
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echo "set -gx PYENV_SHELL $shell"
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;;
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* )
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echo "export PYENV_SHELL=$shell"
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;;
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esac
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}
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function print_completion() {
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completion="${root}/completions/pyenv.${shell}"
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if [ -r "$completion" ]; then
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echo "source '$completion'"
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fi
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}
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function print_rehash() {
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if [ -z "$no_rehash" ]; then
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echo 'command pyenv rehash 2>/dev/null'
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fi
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}
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function print_shell_function() {
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case "$shell" in
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fish )
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cat <<EOS
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function pyenv
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set command \$argv[1]
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set -e argv[1]
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switch "\$command"
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case activate deactivate rehash shell
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source (pyenv "sh-\$command" \$argv|psub)
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case '*'
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command pyenv "\$command" \$argv
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end
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end
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EOS
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;;
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ksh | ksh93 | mksh )
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cat <<EOS
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function pyenv {
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typeset command
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EOS
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;;
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* )
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cat <<EOS
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pyenv() {
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local command
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command="\${1:-}"
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if [ "\$#" -gt 0 ]; then
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shift
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fi
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case "\$command" in
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activate|deactivate|rehash|shell)
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eval "\$(pyenv "sh-\$command" "\$@")"
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;;
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*)
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command pyenv "\$command" "\$@"
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;;
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esac
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}
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EOS
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;;
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esac
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}
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main
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