Failing to build PyQt5-5.9.2-intel-2018a-Python-3.6.4

[Flamefire]

The PyQt5-5.9.2-intel-2018a-Python-3.6.4.eb fails to build due to the EasyBlock not finding IMKL

Checking the modules loaded:

module load intel/2018a
module load Python/3.6.4-iimkl-2018a
module load SIP/4.19.8-intel-2018a-Python-3.6.4
module load Qt5/5.10.1-intel-2018a

It turns out that loading SIP switches Python/3.6.4-iimkl-2018a => Python/3.6.4-intel-2018a which results (for unknown reason) to NO MKL module loaded anymore.

I think iimkl having a different imkl than intel while supposedly being a subtoolchain is simply wrong, isn't it?