Odd bugs in 3.6.4

[Disgruntoad]

Hey, I just checked out and built 3.6.4 following https://mitsuba.readthedocs.io/en/stable/src/developer_guide/compiling.html

I ran into 2 odd issues:

(1) 'python-default' seems to not work

Here are my changes to the 'mitsuba.conf' file:

"enabled": [                                                                                                                              
                 "scalar_mono", "scalar_rgb", "scalar_spectral", "llvm_mono", "llvm_rgb", "llvm_spectral", "llvm_ad_spectral_polarized", "cuda_mono", "cuda_mono_polarized", "cuda_rgb", "cuda_spectral", "cuda_spectral_double", "cuda_spectral_polarized", "cuda_spectral_polarized_double", "cuda_ad_spectral"  
    ],  

   "python-default": "cuda_spectral",

(default failure shown below)

(2) I'm unable to call mi.Transform4f.scale()

Upgrading from 3.5.2, both of these commands worked fine.

[Disgruntoad]

Ok, I realized the 2nd one was a change in the api. Has to be called as

mi.Transform4f().scale(p3)

works fine.