Same story

 $ sudo apt-get install libgtk-3-dev
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:
 libgtk-3-dev : Depends: libegl1-mesa-dev but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

 $ sudo apt-get install libgtk-3-dev libegl1-mesa-dev
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:
 libegl1-mesa-dev : Depends: libegl1-mesa (= 11.2.0-1ubuntu2) but 
12.1~git1606260730.d93bac~gd~w is to be installed
                    Depends: libwayland-egl1-mesa (= 11.2.0-1ubuntu2) but 
12.1~git1606260730.d93bac~gd~w is to be installed
                    Depends: libdrm-dev (>= 2.4.52) but it is not going to be 
installed
E: Unable to correct problems, you have held broken packages.

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https://bugs.launchpad.net/bugs/1582349

Title:
  cannot install libgtk-3-dev

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