snap run --shell gnome-calculator gives a series of errors

[Paweł Stołowski]

core from edge, snapd 2.36.1+git1017.fdb9926~ubuntu16.04.1

Doing "snap run --shell gnome-calculator" produces a bunch of errors, all of them seem to be related to known problems with themes, but the "/snap/" error look weird:

$ sudo snap run --shell gnome-calculator
[sudo] password for pawel:
main.go:224: cannot change mount namespace of snap "gnome-calculator" according to change mount (/snap/gtk-common-themes/808/share/icons/Solus /snap/gnome-calculator/260/data-dir/icons/Solus none bind,ro 0 0): c
annot write to "/snap/gtk-common-themes/808/share/icons/Solus" because it would affect the host in "/snap/"
main.go:224: cannot change mount namespace of snap "gnome-calculator" according to change mount (/snap/gtk-common-themes/808/share/icons/Suru /snap/gnome-calculator/260/data-dir/icons/Suru none bind,ro 0 0): can
not use "/snap/gtk-common-themes/808/share/icons/Suru" as bind-mount source: not a directory
main.go:224: cannot change mount namespace of snap "gnome-calculator" according to change mount (/snap/gtk-common-themes/808/share/sounds/Yaru /snap/gnome-calculator/260/data-dir/sounds/Yaru none bind,ro 0 0): c
annot write to "/snap/gtk-common-themes/808/share/sounds/Yaru" because it would affect the host in "/snap/"
main.go:224: cannot change mount namespace of snap "gnome-calculator" according to change mount (/snap/gtk-common-themes/808/share/sounds/communitheme /snap/gnome-calculator/260/data-dir/sounds/communitheme none
 bind,ro 0 0): cannot write to "/snap/gtk-common-themes/808/share/sounds/communitheme" because it would affect the host in "/snap/"
main.go:224: cannot change mount namespace of snap "gnome-calculator" according to change mount (/snap/gtk-common-themes/808/share/themes/EvoPop-Azure /snap/gnome-calculator/260/data-dir/themes/EvoPop-Azure none
 bind,ro 0 0): cannot write to "/snap/gtk-common-themes/808/share/themes/EvoPop-Azure" because it would affect the host in "/snap/"
main.go:224: cannot change mount namespace of snap "gnome-calculator" according to change mount (/snap/gtk-common-themes/808/share/themes/EvoPop /snap/gnome-calculator/260/data-dir/themes/EvoPop none bind,ro 0 0
): cannot write to "/snap/gtk-common-themes/808/share/themes/EvoPop" because it would affect the host in "/snap/"

[Zygmunt Krynicki (zyga)]

Reproduced, I suspect this is a fallout from fixing https://bugs.launchpad.net/snapd/+bug/1803535

[Zygmunt Krynicki (zyga)]

This is actually a bug in gtk-common-themes snap, the $SNAP/share/sounds directory is missing but the content interface refers to two directories inside.

https://forum.snapcraft.io/t/gtk-common-themes-bind-mount-sources-are-symlinks-missing-sounds/8540

[Zygmunt Krynicki (zyga)]

Reported in the best upstream location I could find: https://gitlab.gnome.org/Community/Ubuntu/gtk-common-themes/issues/4

[Ken VanDine (ken-vandine)]

With gtk-common-themes revision 818 I only get one line output at startup:

main.go:192: cannot change mount namespace of snap "gnome-calculator" according to change mount (/snap/gtk-common-themes/818/share/icons/Suru /snap/gnome-calculator/260/data-dir/icons/Suru none bind,ro 0 0): cannot use "/snap/gtk-common-themes/818/share/icons/Suru" as bind-mount source: not a directory

That's the symlink issue which has a proposed fix that is being reviewed.