@Harald Pretl which commands should I peform to enable the IHP PDK?

As it says : Not ready.

What do you want to do with it ? (i.e. what tools do you want to use ?)

Analog IC flow (xschem, ngspice, magic/klayout...)

Well magic won't work, as I said, no support. xschem/ngspice/klayout should.

I saw there are some tech files, but I don't know how to switch to ihp pdk

PDK

value should be

sg13g2

.

I did this, but the xschem doesn't open :/

Does it start with sky130 ?

What worked for me, (in Windows) was to copy the xscherc file to my project directory. This file is in /IHP-Open-PDK/ihp-sg13g2/libs.tech/xschem. Also read the install.py to see what it does. You can also print the TCL variable with puts, for example puts $XSCHEM_LIBRARY_PATH or puts $PDK, or puts $PDK_ROOT to debug path variables.

You can use

iic-pdk

to switch PDKs. Call it w/o parameter and it will list the available PDKs. Then use

iic-pdk sky130A

or similar to set the respective env vars.