Snaps to invoke external processes

Spencer spencertparkin at
Tue Nov 22 23:31:46 UTC 2016

Unless dependencies such as snapd-xdg-open can be named in the yaml, I could show a dialog telling the user that they may need to install it.  Naming dependencies of snaps, however, as I understand it, defeats the purpose of snaps as they're supposed to bake all the dependencies into themselves.

The only other process I would want to invoke is another instance of my own snap, but that sounds like something a virus would want to do too.

> On Nov 22, 2016, at 7:54 AM, Didier Roche <didrocks at> wrote:
>> Le 22/11/2016 à 15:38, Gustavo Niemeyer a écrit :
>> The problem is that snapd works in environments where the dependencies to make the browser-launcher work aren't available.
>> The right fix is probably to make it a dependency of one of the debs that are always installed on a normal desktop system, whether snapd is there or not. It's a very minimal piece of           software.
> How do you see non ubuntu distro being handled then?
> Cheers,
> Didier
>>> On Tue, Nov 22, 2016 at 5:21 AM, Mark Shuttleworth <mark at> wrote:
>>> On 22/11/16 06:46, Didier Roche wrote:
>>> > Le 22/11/2016 à 05:43, Spencer Parkin a écrit :
>>> >> Well, actually, not unless the customer also installs
>>> >> snapd-xdg-open.  Why is it an add-on?  Why not just make it part of
>>> >> snapd?
>>> >
>>> > I gues the idea was to keep it as a separate daemon and have the
>>> > implementation which can easily change.
>>> > The "why it's not installed by default" was the                 reason why I CCed
>>> > Michael yesterday. I hope he will answer here.
>>> Seems to me that we want a predictable result for all snap users,
>>> otherwise we make installation instructions for snaps unnecessarily complex.
>>> Mark
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