`check_version` in `install-yarn` had the rather careful check that
the yarn it installed into `/usr/bin/yarn` was the yarn which was
first in the user's `$PATH`. This caused problems when the user had a
pre-existing `/usr/local/bin/yarn`; however, those problems are
limited to the `install-yarn` script itself, since the nearly all
calls to yarn from Zulip's code already hardcode the `/srv/zulip-yarn`
location, and do not depend on what is in `$PATH`.
Remove the checks in `install-yarn` that depend on the local `$PATH`,
and stop installing our `yarn` into it. We also adjust the two
callsites which did not specify the full path to `yarn`, so use
`/srv/zulip-yarn`.
Fixes: #23993
Co-authored-by: Alex Vandiver <alexmv@zulip.com>
scripts.lib.node_cache expects Yarn to be in /srv/zulip-yarn, so if
it’s installed somewhere else, even if it’s the right version, we need
to reinstall it.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
Lalit
Anders Kaseorg