Cannot use input-port flag

[ahokinson]

By using the flag, --input-port,

cli/cmd/dependabot/internal/cmd/update.go

Line 140 in 97480a2

cmd.Flags().IntVar(&flags.inputServerPort, "input-port", 0, "port to use for securely passing input to the updater")

we end up in a situation with both

cli/cmd/dependabot/internal/cmd/update.go

Line 149 in 97480a2

hasArguments := len(cmd.Flags().Args()) > 0

and

cli/cmd/dependabot/internal/cmd/update.go

Line 150 in 97480a2

hasServer := flags.inputServerPort != 0

being true at the same time, as a consequence of the use of the flag.

This means that using the flag will always result in an error.

cli/cmd/dependabot/internal/cmd/update.go

Line 160 in 97480a2

return nil, errors.New("can only use one of: input file, arguments, server, or stdin")

[ahokinson]

I can do a PR to help, but I wanted to know why hasServer is something that can't be used in tandem with other args.

[jakecoffman]

This is working as designed, see #507 for more info.