Fix crash-on-save by switching file-picker dialog to xdg-portal

[jleibs]

Not ready to merge yet, but want to create CI-built wheels.

In particular need to figure out alternative to the MessageDialogs.

Resolves: #1315

Test wheels from CI:

• Ubuntu 20.10
• Ubuntu 20.04
• Arch (with xdg-desktop-portal-gtk)

Checklist

• I have read and agree to Contributor Guide and the Code of Conduct
• I've included a screenshot or gif (if applicable)
• I've added a line to CHANGELOG.md (if this is a big enough change to warrant it)

[jleibs]

We don't want to restrict wheel-building to only when we have changed python code.

1. We want to catch if if we break the wheel by changing rust code
2. We want to be able to build new wheels based on changes to the rust code

[teh-cmc]

Unsurprisingly: doesn't work on an Arch system with nothing but a wlroots based WM installed, though it did work for @jleibs running on a wlroots WM that is installed on a Ubuntu with (likely) other xdg-portals running in the background.

[emilk]

Blocked by new release of rfd containing

• Update pollster to 0.3 PolyMeilex/rfd#105

[PolyMeilex]

Unsurprisingly: doesn't work on an Arch system with nothing but a wlroots based WM installed, though it did work for @jleibs running on a wlroots WM that is installed on a Ubuntu with (likely) other xdg-portals running in the background.

On wlroots systems, one would be expected to have xdg-portal-wlr (for wlroots specific stuff like screen share) and xdg-portal-gtk (for everything else) running, same would apply to X11 setups like i3wm or any other WM, but obviously people don't run them for the sake of "bloat" free experience. That's the main reason why it is still not a default backend of RFD.

In particular need to figure out alternative to the MessageDialogs.

That's planed already, I want to use Zenity (and KDialog) for that in RFD, just haven't had the time to do that. Eventually I would like to remove GTK all together in favor of Zenity, and use it as fallback only for those "bloat" free systems.

[teh-cmc]

Hey @PolyMeilex, thanks for the heads up.

I've tried installing xdg-portal-kde alongside my xdg-portal-wlr before but that didn't help sadly; I'll try with xdg-portal-gtk then.

I'll also try your Zenity branch while I'm at it then. Will get back to you asap.

[teh-cmc]

Can confirm that both Message and File dialogs work fine for me using the zenity branch, on a stripped down Arch/wlroots setup, provided there's an extra xdg-desktop-portal-gtk running in the background 🎊

[emilk]

rfd 0.11.3 has been released, and I've updated to it. Please test this @teh-cmc !

EDIT: ouch, that's A LOT of new dependencies… 😬

[emilk]

intentional or merge conflict?

[teh-cmc]

Yep, dialogs working fine over here

[emilk]

I'll see if I can fix the duplicated deps and get cargo deny happy

[emilk]

I believe this is ready to be merged then