.desktop file missing

[probonopd]

A .desktop file is missing for Linux desktops.

[mdsteele]

The .desktop file is normally generated by cargo-bundle when following the instructions at https://github.com/mdsteele/syzygy#debian-linux. The values for the .desktop file are pulled from various places in the Cargo.toml file (see in particular the [package.metadata.bundle] section).

[probonopd]

Since .desktop files are not Debian specific, it would possibly be better to just supply a desktop file like this. Thanks.