Vivaldi is detetced as a malware from my Security suite (Hitman Pro).
Please report that to Hitman support [email protected] and tell them their "security" software breaks Vivaldi installer.
I think this was done allready automatically because while scanning my system with hitman I saw that hitman uploaded a number of files from the Vivaldi Directory. This was yesterday and today I reinstalled the newest snapshot, which was working. I have not got a hitman allert since 2 years or maybe even longer, the normal situation is that it delets all the collected cookies, but real malware not that I remember.
By the way, in the Vivaldi help tab and the about menue with the Version number you could make it a little easier and add a "copy to clipboard" button which is not including any user data, such as path names, etc.
Like FreeCAD for example, please see attached picture.
This is quite handy for me the user and for you the developer to realy get the neccessary version data you would like to have.
The script as root installs everything including the icons folder to /usr/local/share, but the Software installs the vivaldi-snapshot folder to /opt and icons to hicolor, which the vivaldi-snapshot desktop file doesn't see the vivaldi-snapshot icon as user, but sees only as root. So, cannot be shown on the menu.
If you do a search in Mint's package manager, Vivaldi is not listed, AFAICT.
We are working on getting Vivaldi into as many distros as possible. Mint is a very important one. It will always help if you guys ask those dealing with such things within your distro community to add us. It works better than if we are the only ones who asking for it. Currently Vivaldi is very easily available on Arch and Antegros (the latter a phenomenal distro I may say)