at least the os.egtenv can be replaced with 
```python
self.get_software_root(self.FFT_MODULE_NAME)
```
as is done in the _set_fft_variables from Fft class

but indeed, there is no other way (i thought that the static link option (which would contain the full path to all modules) was generated somewhere using the append_exists, but i can't seem to find it