Variables no longer seem to work for pythonPath setting

[craigbrett17]

Environment data

VS Code version: Version 1.20.0
Commit c63189deaa8e620f650cc28792b8f5f3363f2c5b
Date 2018-02-07T17:09:39.780Z
Shell 1.7.9
Renderer 58.0.3029.110
Node 7.9.0
Architecture x64
Python Extension version: 2018.1.0
Python Version: Python 2.7.14 :: Anaconda, Inc.
OS and version: OS Name Microsoft Windows 10 Enterprise 2016 LTSB
Version 10.0.14393 Build 14393

Actual behavior

When I launch the app to debug the current file, I receive the following message:

Error: Failed to launch the Python Process, please validate the path '${workspaceFolder}/virtualenv/python'

The path definitely exists.

Changing the setting to use the full path without the ${workspaceFolder} variable works as expected.

Expected behavior

The file should launch in debug as expected.

Steps to reproduce:

• Use Annaconda (or similar virtualenv tech) to create a virtualenv in a project
• Set the python.pythonPath setting to the newly created virtual env using the workspaceFolder or workspaceRoot variable:

"python.pythonPath": "${workspaceFolder}/virtualenv/python",

• Try launching a python file in debug. You'll receive the error message stated in actual behaviour.
• Change the setting to point at the pythonpath directly
• Launch the python file again. It will work as expected.

Logs

Output from Python output panel

N/A

Output from Console window (Help->Developer Tools menu)

Failed to launch the Python Process, please validate the path '${workspaceFolder}/virtualenv/python'
e.doShow @ messageService.ts:126
e.show @ messageService.ts:105
(anonymous) @ debugService.ts:977
v @ winjs.base.raw.js:1209
enter @ winjs.base.raw.js:901
_run @ winjs.base.raw.js:1068
_chainedError @ winjs.base.raw.js:1031
n @ winjs.base.raw.js:736
then @ winjs.base.raw.js:1436
enter @ winjs.base.raw.js:747
_run @ winjs.base.raw.js:1068
_setCompleteValue @ winjs.base.raw.js:1052
v @ winjs.base.raw.js:1209
enter @ winjs.base.raw.js:901
_run @ winjs.base.raw.js:1068
_error @ winjs.base.raw.js:1041
(anonymous) @ v8Protocol.ts:53
e.dispatch @ v8Protocol.ts:136
e.handleData @ v8Protocol.ts:104
(anonymous) @ v8Protocol.ts:41
emitOne @ events.js:96
emit @ events.js:191
readableAddChunk @ _stream_readable.js:178
Readable.push @ _stream_readable.js:136
onread @ net.js:560
console.ts:123 [Extension Host] (node:11552) DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir() instead.
t.log @ console.ts:123
t._logExtensionHostMessage @ extensionHost.ts:394
(anonymous) @ extensionHost.ts:211
emitTwo @ events.js:106
emit @ events.js:194
process.nextTick @ internal/child_process.js:766
_combinedTickCallback @ internal/process/next_tick.js:73
_tickCallback @ internal/process/next_tick.js:104

[DonJayamanne]

Duplicate of #691

[craigbrett17]

Okay, fair enough.

[DonJayamanne]

Please note the issue has been fixed, and you can get the food using the insiders build of the extension. Please check the issue #691 for instructions