/usr/share/app-install/desktop/kicad:kicad.desktop is in app-install-data 0.12.04.4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | [Desktop Entry]
X-AppInstall-Package=kicad
X-AppInstall-Popcon=367
X-AppInstall-Section=universe
MimeType=text/pro
Name=KiCad
Exec=kicad
Icon=icon_kicad
Categories=Development;Engineering;Electronics
Type=Application
Terminal=false
Comment=PCB-Suite
X-Ubuntu-Gettext-Domain=app-install-data
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