Upgrading the maven plugin from 1.7 to 1.8 results in the following error message:
[ERROR] \'dependencies.dependency.systemPath\' for com.sun:tools:jar must specify
I had the same problem and I've just added in eclipse.ini the path to the JDK8. In my case:
-vm C:\Program Files (x86)\Java\jdk1.8.0_60\bin\javaw.exe
(must be before -vmargs)