Josh Bleecher Snyder 7dbbe0c7c7 cmd/tailscale/cli: fix running from Xcode
We were over-eager in running tailscale in GUI mode.
f42ded7acf63e2f3711f6512b701ddeac0e2d7a6 fixed that by
checking for a variety of shell-ish env vars and using those
to force us into CLI mode.

However, for reasons I don't understand, those shell env vars
are present when Xcode runs Tailscale.app on my machine.
(I've changed no configs, modified nothing on a brand new machine.)
Work around that by adding an additional "only in GUI mode" check.

Signed-off-by: Josh Bleecher Snyder <josharian@gmail.com>
2021-05-04 11:37:02 -07:00
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