snapcraft options are position-dependent

[Michał Sawicz]

$ snapcraft --use-lxd build
Support for 'multipass' needs to be set up. Would you like to do that it now? [y/N]:

vs.

$ snapcraft build --use-lxd
Launching a container

Command line options being positional makes for a very confusing user experience. And if `--use-lxd` is an invalid option before the command, it should be a straight-up error instead of being ignored.

[John Neffenger (jgneff)]

This issue prevents setting up a simple Bash alias that always uses LXD.

I would like to define the following alias:

~/.bash_aliases
---------------
alias snapcraft='snapcraft --use-lxd'

The workaround is to define a function with a different name that puts the option at the end of the command line, like this:

~/.bash_aliases
---------------
function sc() {
    snapcraft $@ --use-lxd
}