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python.elv
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python.elv
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# Python Virtual Environment Utilites for Elvish (modified)
#
# Copyright © 2018
# Ian Woloschin - ian@woloschin.com
#
# License: github.com/iwoloschin/elvish-packages/LICENSE
#
# Activation & deactivation methods for working with Python virtual
# environments in Elvish. Will not allow invalid Virtual
# Environments to be activated.
use str
use ./cmds
var venv-directory = $E:HOME/.venv
fn activate {|name|
if (str:has-suffix $venv-directory "/") { set venv-directory = $venv-directory[0..-1] }
var venvs = [(e:ls $venv-directory)]
var error = ?(var confirmed-name = (
each {|venv|
if (eq $name $venv) { put $name }
} $venvs)
)
if (eq $name $confirmed-name) {
set-env VIRTUAL_ENV $venv-directory/$name
set-env _OLD_VIRTUAL_PATH $E:PATH
cmds:prepend-to-path $E:VIRTUAL_ENV/bin
if (cmds:not-empty $E:PYTHONHOME) {
set-env _OLD_VIRTUAL_PYTHONHOME $E:PYTHONHOME
unset-env PYTHONHOME
}
} else {
echo 'Virtual Environment «'$name'» not found.'
}
}
set edit:completion:arg-completer[python:activate] = {|@args| e:ls $venv-directory }
fn deactivate {
if (cmds:not-empty $E:_OLD_VIRTUAL_PATH) {
set-env PATH $E:_OLD_VIRTUAL_PATH
unset-env _OLD_VIRTUAL_PATH
}
if (cmds:not-empty $E:_OLD_VIRTUAL_PYTHONHOME) {
set-env PYTHONHOME $E:_OLD_VIRTUAL_PYTHONHOME
unset-env _OLD_VIRTUAL_PYTHONHOME
}
if (cmds:not-empty $E:VIRTUAL_ENV) {
unset-env VIRTUAL_ENV
}
}
fn list-venvs {
all [(e:ls $venv-directory)]
}