server extensions don't work right with tilt args

[nicks]

Add the kubefwd extension to your tiltfile:

v1alpha1.extension_repo(name='default', url='https://github.com/tilt-dev/tilt-extensions')
v1alpha1.extension(name='kubefwd:config', repo_name='default', repo_path='kubefwd')

Then tilt up one service:

$ tilt up postgres

You get:

Beginning Tiltfile execution
local: mktemp --suffix -tilt-kubefwd
 → /tmp/tmp.Lue7xfXjjp-tilt-kubefwd
local: ./create-refresh-button.sh /tmp/tmp.Lue7xfXjjp-tilt-kubefwd
 → uibutton.tilt.dev/kubefwd:refresh unchanged
 → cmd.tilt.dev/kubefwd:refresh configured
You specified some resources that could not be found: "postgres"
Is this a typo? Existing resources in Tiltfile: "kubefwd:run"

I think this is a bug in the extension loader. I think we should change the extension loader to ignore Tilt args.

[nicks]

this is out in tilt v0.22.6