I have been trying to install SIP and PyQt4 + SIP for a while now under windows 10 in a Virtual env (legacy project so was done in PyQt4). I started in PyCharm using the package manager. I also tried command line.
C:\Users\jspada>pip install SIP
Collecting SIP
Could not find a version that satisfies the requirement SIP (from versions: )
No matching distribution found for SIP
C:\Users\jspada>pip install PyQt4
Collecting PyQt4
Could not find a version that satisfies the requirement PyQt4 (from versions: )
No matching distribution found for PyQt4
Is this because there are no builds out there for SIP and PyQt4? PyQt4 maybe because it is a bit legacy but I would think SIP would work.