Snapcraft is pulling content snap before building a snap

[keshavbhatt]

snapcraft both in stable and edge channel is pulling content snap described in plugs of app’s snapcraft before building the snap package of app.

This is very annoying and i don’t know what is the use of such behavior. Content snaps are usually used to package runtime libs and other things required by app. I dont know why they are required by snapcraft before building the .snap file of app.

my app’s snapcraft.yaml (https://paste.ubuntu.com/p/fF5Wrv5hny/)

Command i used to build snap :
`snapcraft--destructive-mode`
 cause i don’t need build it inside a VM, since libs and runtime is built in VM and are in content snap already this snap just hold application executable and snap meta.

Same happen with `snapcraft` command, Hence snapcraft is taking huge resources to build a a snap package which don't even have any package to stage.

[keshavbhatt (keshavnrj)]

This bug is also being discussed on forum.snapcraft.io in following link.
https://forum.snapcraft.io/t/snapcraft-is-pulling-content-snap-before-building-a-snap/16273/2

[Sergio Schvezov (sergiusens)]

This is a feature, to ensure that what you build has the runtime satisfied. We can add a flag of the types of "I know what I am doing, don't help me" to snapcraft.yaml and then you don't get the "Missing dependencies" help for stage-packages, stage-snaps or plugs you could add to solve those missing dependencies.

[keshavbhatt (keshavnrj)]

a developer knows what he has added to plugs as he knows that the content snap will be published by him as well, see the snapcraft file there is no stage-packages, stage-snaps property anywhere.

still snapcraft need to install cnotent snap, 240Mb in my case.

I don't think content snaps entry need a check by snapcraft. If still this is just a check, whats the need to install it ??

[keshavbhatt (keshavnrj)]

This is a bug, and if not a annoying feature which has no use. Why in first place snapcraft need to check if there is content snap in the store or not before building a snap package ??? what if there is no internet connection ??? what if the developer decides to upload content snap later. what if he don't want to add content snap at all and don't want add his snap package to store ?

[keshavbhatt (keshavnrj)]

Also this behaviour of snapcraft is making it crash when the machine is offline.Here is the link to the bug report :
https://bugs.launchpad.net/snapcraft/+bug/1869506

[Sergio Schvezov (sergiusens)]

On sáb, 2020-03-28 at 15:07:36 -0300, keshavbhatt wrote:

> I don't think content snaps entry need a check by snapcraft. If still
> this is just a check, whats the need to install it ??

I think you got it backwards. The content snap is downloaded to ensure that what
you are building can be satisfied with what is provided by the content snap,
which is why I proposed a "I am on my own" mechanism.

[keshavbhatt (keshavnrj)]

I have few points i want make, please read the linked thread from snapcraft forum https://forum.snapcraft.io/t/snapcraft-is-pulling-content-snap-before-building-a-snap/16273/4?u=keshavnrj