Optional Python and R attributes within configuration file #3814

Job	Run time
lint / lint	1m 37s
home-view-unit-tests / lint	12s
agent / native (macos-latest)	46s
build / build	1m 42s
agent / native (windows-latest)	1m 45s
agent / native (ubuntu-latest)	42s
vscode / native (macos-latest)	52s
vscode / native (windows-latest)	4m 9s
vscode / native (ubuntu-latest)	1m 25s
archive / archive	1m 23s
package / vscode	4m 5s
upload / upload	44s
vscode-ui / ui-tests (ubuntu-latest)	6m 24s
	25m 46s

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