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78 lines
2.5 KiB
78 lines
2.5 KiB
4 years ago
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<#
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.Synopsis
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Activate a Python virtual environment for the current PowerShell session.
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.Notes
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On Windows, it may be required to enable this Activate.ps1 script by setting the
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execution policy for the user. You can do this by issuing the following PowerShell
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command:
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PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
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For more information on Execution Policies:
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https://go.microsoft.com/fwlink/?LinkID=135170
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#>
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<#
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.Synopsis
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Remove all shell session elements added by the Activate script, including the
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addition of the virtual environment's Python executable from the beginning of
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the PATH variable.
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.Parameter NonDestructive
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If present, do not remove this function from the global namespace for the
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session.
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#>
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function global:deactivate ([switch]$NonDestructive) {
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# Revert to original values
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# The prior prompt:
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if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
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Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
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Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
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}
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if (Test-Path -Path Env:VIRTUAL_ENV_PROMPT) {
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Remove-Item -Path env:VIRTUAL_ENV_PROMPT
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}
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# Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
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if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
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Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
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}
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{% for var, value in envvars.items() %}if (Test-Path -Path Env:_OLD_{{ var }}) {
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Copy-Item -Path Env:_OLD_{{ var }} -Destination Env:{{ var }}
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Remove-Item -Path Env:_OLD_{{ var }}
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} else {
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if (Test-Path -Path Env:{{ var }}) {
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Remove-Item -Path Env:{{ var }}
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}
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}
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{% endfor %}
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# Leave deactivate function in the global namespace if requested:
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if (-not $NonDestructive) {
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Remove-Item -Path function:deactivate
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}
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}
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Copy-Item -Path Env:PATH -Destination Env:_OLD_PATH
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{% for var, value in envvars.items() %}if (Test-Path -Path Env:{{ var }}) {
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Copy-Item -Path Env:{{ var }} -Destination Env:_OLD_{{ var }}
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}
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$Env:{{ var }} = "{{ value }}"
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{% endfor %}
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function global:_OLD_VIRTUAL_PROMPT { "" }
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Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
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New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value {{ prompt }}
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function global:prompt {
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Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
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_OLD_VIRTUAL_PROMPT
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}
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$env:VIRTUAL_ENV_PROMPT = "{{ prompt }}"
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