init

.venv/lib/python3.8/site-packages/virtualenv/activation/nushell/__init__.py

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+from __future__ import absolute_import, unicode_literals
+
+import os
+
+from virtualenv.util.path import Path
+from virtualenv.util.six import ensure_text
+
+from ..via_template import ViaTemplateActivator
+
+
+class NushellActivator(ViaTemplateActivator):
+    def templates(self):
+        yield Path("activate.nu")
+        yield Path("deactivate.nu")
+
+    def replacements(self, creator, dest_folder):
+        # Due to nushell scoping, it isn't easy to create a function that will
+        # deactivate the environment. For that reason a __DEACTIVATE_PATH__
+        # replacement pointing to the deactivate.nu file is created
+
+        return {
+            "__VIRTUAL_PROMPT__": "" if self.flag_prompt is None else self.flag_prompt,
+            "__VIRTUAL_ENV__": ensure_text(str(creator.dest)),
+            "__VIRTUAL_NAME__": creator.env_name,
+            "__BIN_NAME__": ensure_text(str(creator.bin_dir.relative_to(creator.dest))),
+            "__PATH_SEP__": ensure_text(os.pathsep),
+            "__DEACTIVATE_PATH__": ensure_text(str(Path(dest_folder) / "deactivate.nu")),
+        }

.venv/lib/python3.8/site-packages/virtualenv/activation/nushell/activate.nu

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

.venv/lib/python3.8/site-packages/virtualenv/activation/nushell/deactivate.nu

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+def-env deactivate-virtualenv [] {
+    def has-env [name: string] {
+        $name in (env).name
+    }
+
+    let is-windows = ((sys).host.name | str downcase) == 'windows'
+
+    let path-name = if $is-windows {
+        if (has-env 'Path') {
+            'Path'
+        } else {
+            'PATH'
+        }
+    } else {
+        'PATH'
+    }
+
+    load-env { $path-name : $env._OLD_VIRTUAL_PATH }
+
+    let-env PROMPT_COMMAND = $env._OLD_PROMPT_COMMAND
+
+    # Hiding the environment variables that were created when activating the env
+    hide _OLD_VIRTUAL_PATH
+    hide _OLD_PROMPT_COMMAND
+    hide VIRTUAL_ENV
+    hide VIRTUAL_PROMPT
+}
+
+deactivate-virtualenv
+
+hide pydoc
+hide deactivate