cannot install ojo via apt-get on Ubuntu 20.04

[adrianzhang]

Here is my console and I'v tried google to solve it but failed.

$ sudo apt-get install ojo -y
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 ojo : Depends: gir1.2-webkit-3.0 but it is not installable
E: Unable to correct problems, you have held broken packages.

# adrian @ GamePack20 in ~/Downloads [5:35:14] C:100
$ sudo apt-get install gir1.2-webkit-3.0
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package gir1.2-webkit-3.0 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'gir1.2-webkit-3.0' has no installation candidate

# adrian @ GamePack20 in ~/Downloads [5:35:24] C:100
$ sudo apt-get install gir1.2-webkit-4.0
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package gir1.2-webkit-4.0
E: Couldn't find any package by glob 'gir1.2-webkit-4.0'
E: Couldn't find any package by regex 'gir1.2-webkit-4.0'

[milesfrain]

Looks like ojo needs an update to work with webkit2 (the version that's available on Ubuntu 20.04).

#54 covers some initial updating steps.