Can't Click Links from Evolution

[Douglas Summers]

Results from 'apt search xdg-desktop-portal*'
(this is on Linux Mint 18.3)

i   xdg-desktop-portal
p   xdg-desktop-portal:i386
v   xdg-desktop-portal-backend
v   xdg-desktop-portal-backend:i386                                    
i   xdg-desktop-portal-dev
i   xdg-desktop-portal-gtk
p   xdg-desktop-portal-gtk:i386

What am I missing? Do I need to install xdg-desktop-portal-backend as
well?

Below is from Xubuntu 18.04:
xdg-desktop-portal/bionic,now 0.11-1 amd64 [installed,automatic]
xdg-desktop-portal-dev/bionic,bionic 0.11-1 all
xdg-desktop-portal-gtk/bionic,now 0.11-1 amd64 [installed,automatic]
xdg-desktop-portal-kde/bionic 5.12.4-0ubuntu2 amd64
xdg-desktop-portal-tests/bionic 0.11-1 amd64

On Mon, 2018-06-04 at 09:52 +0200, Alexander Larsson wrote:
> This just means that you need to install the xdg-destop-portal
> package
> (and some implementation of it, say xdg-desktop-portal-gtk for
> gnomeish things). This is how flatpak apps integrate with the host
> desktop.
> 
> On Sat, May 26, 2018 at 9:52 PM, Douglas Summers <ajgringo619 at cox.net
> > wrote:
> > 
> > (on Linux Mint 18.3, flatpak 0.11.7)
> > 
> > Referencing this site (https://wiki.gnome.org/Apps/Evolution/Flatpa
> > k),
> > I built Evolution 3.28. Other than a few warnings, the build seemed
> > to
> > go OK. After successfully creating an account, I tried to click on
> > a
> > link within a message and got this error:
> > 
> > GDBus.Error: org.freedesktop.DBus.Error.ServiceUnknown: The name
> > org.freedesktop.portal.Desktop was not provided by any .service
> > files.
> > 
> > In the recent past, I was able to build Evolution and never got
> > this
> > message. I believe that I was using an older version of flatpak,
> > but I
> > can't be sure (whatever the default version on Fedora 27 is).
> > 
> > Here's my environment variables:
> > CINNAMON_VERSION=3.6.7
> > DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-
> > mAyfAadIq0,guid=db2ca0b3830e7ecd0871f5ba5b099773
> > DEFAULTS_PATH=/usr/share/gconf/cinnamon.default.path
> > DESKTOP_SESSION=cinnamon
> > DISPLAY=:0
> > GDM_LANG=en_US
> > GDMSESSION=cinnamon
> > GJS_DEBUG_OUTPUT=stderr
> > GJS_DEBUG_TOPICS=JS ERROR;JS LOG
> > GNOME_DESKTOP_SESSION_ID=this-is-deprecated
> > GTK_MODULES=gail:atk-bridge
> > GTK_OVERLAY_SCROLLING=1
> > HOME=~
> > LANG=en_US.UTF-8
> > LANGUAGE=en_US
> > LOGNAME=me
> > MANDATORY_PATH=/usr/share/gconf/cinnamon.mandatory.path
> > OLDPWD=~
> > PATH=~/bin:~/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/u
> > sr/b
> > in:/sbin:/bin:/usr/games:/usr/local/games
> > PS1=[\u:\w]$
> > PWD=~/flatpak
> > QT_ACCESSIBILITY=1
> > QT_LINUX_ACCESSIBILITY_ALWAYS_ON=1
> > QT_QPA_PLATFORMTHEME=qgnomeplatform
> > QT_STYLE_OVERRIDE=gtk
> > SESSION_MANAGER=local/DSS-Mint:@/tmp/.ICE-unix/2014,unix/DSS-
> > Mint:/tmp/.ICE-unix/2014
> > SHELL=/bin/bash
> > SHLVL=1
> > SSH_AGENT_PID=2125
> > SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
> > TERM=xterm-256color
> > USER=me
> > _=/usr/bin/env
> > VTE_VERSION=4205
> > WINDOWID=102760454
> > XAUTHORITY=~/.Xauthority
> > XDG_CONFIG_DIRS=/etc/xdg/xdg-cinnamon:/etc/xdg
> > XDG_CURRENT_DESKTOP=X-Cinnamon
> > XDG_DATA_DIRS=~/.local/share/flatpak/exports/share:/var/lib/flatpak
> > /exp
> > orts/share/:/usr/share/cinnamon:/usr/share/gnome:~/.local/share/fla
> > tpak
> > /exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr
> > /sha
> > re
> > XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/me
> > XDG_RUNTIME_DIR=/run/user/1000
> > XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
> > XDG_SEAT=seat0
> > XDG_SESSION_DESKTOP=cinnamon
> > XDG_SESSION_ID=c2
> > XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
> > XDG_SESSION_TYPE=x11
> > XDG_VTNR=7
> > _______________________________________________
> > Flatpak mailing list
> > Flatpak at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/flatpak
> 
>