Hi.

Have an appimage version of Inkscape, and I find it impossible to print because the list of printers in Print/General dialog box. Inkscape appimage are the only program affected, other program I have tested are all capable of printing w/o issues.

Polygon

Inkscape 1.1-rc (5bd6920, 2021-05-21)

    GLib version:     2.64.6
    GTK version:      3.24.20
    glibmm version:   2.64.2
    gtkmm version:    3.24.2
    libxml2 version:  2.9.10
    libxslt version:  1.1.34
    Cairo version:    1.16.0
    Pango version:    1.44.7
    HarfBuzz version: 2.6.4
    Poppler version:  0.86.1

    OS version:       Fedora 33 (MATE-Compiz)

[edit]

My workaround for this was to install the flatpak version of Inkscape
https://flathub.org/apps/details/org.inkscape.Inkscape

Polygon

Inkscape 1.1 (c68e22c387, 2021-05-23)

    GLib version:     2.68.3
    GTK version:      3.24.30
    glibmm version:   2.64.2
    gtkmm version:    3.24.2
    libxml2 version:  2.9.10
    libxslt version:  1.1.34
    Cairo version:    1.16.0
    Pango version:    1.48.9
    HarfBuzz version: 2.7.2
    Poppler version:  21.01.0

    OS version:       GNOME 40 (Flatpak runtime)

@Grobe Have you reported this as a bug?

Fedora 45 Mate

This bug still exists

Looks like Inkscape appimage gtk3 library was build without libcups and printing at all. 

These files in appimage missing

ls -l /opt/Inksckape/usr/lib/gtk-3.0/3.0.0/printbackends/
итого 212
-rwxr-xr-x 1 avl avl 157904 фев 16 15:05 libprintbackend-cups.so
-rwxr-xr-x 1 avl avl  32416 фев 16 15:05 libprintbackend-file.so
-rwxr-xr-x 1 avl avl  24120 фев 16 15:05 libprintbackend-lpr.so

You can use these lifehack

1. Mount appimage /Inkscape-0a00cf5-x86_64_ce6e4b6adcddd38054b872c652b39a90.AppImage --appimage-mount

/usr/bin/AppImageLauncher: /lib64/libcurl.so.4: no version information available (required by /usr/bin/../lib/x86_64-linux-gnu/appimagelauncher/libappimageupdate.so)
/tmp/.mount_InkscaI26mjS
 

2. copy  content from /tmp/.mount_InkscaI26mjS to /opt/Inkcape

3. Create directory /opt/Inkscape/usr/lib/gtk-3.0/3.0.0/printbackends

4 copy file from system (part of gtk3)  

cp /usr/lib64/gtk-3.0/3.0.0/printbackends/libprintbackend-file.so /opt/Inkscape/usr/lib/gtk-3.0/3.0.0/printbackends

5. run inkscape /opt/Inkscape/AppRun

After that You can use print to file.

Other backends (to cups and lpr) have many-many related links to other libs and not work without rebuild gtk.