How do I install the C-extensions? 
I don't have sqlite3.h. I'll try to get that before trying again.  Yup. That was it. :man_facepalming:  The `setup.py` should print an error if you run `setup.py build_ext`...looks like maybe it got swallowed by `pip`? Not sure. At any rate, glad you got it sorted.
The installation instruction mentioned that if Ihave cython installed then installing peewee will compile the C-extensions. But I'm not able to achieve taht result. 

First I installed Cython and then I pip installed peewee and tried to use the `CSqliteExtDatabase` but it is not installed.

I have copied the output from the steps below:

```
(tempenv-50a4169627007) ↪ pip freeze
Cython==0.29.13


(tempenv-50a4169627007) ↪ pip --no-cache-dir install -U peewee
Looking in indexes: https://pypi.python.org/simple
Collecting peewee
  Downloading https://files.pythonhosted.org/packages/a5/80/c84b0fa212a003db91c87822fd8559fed78e214c3c8f1a97a095ee711a95/peewee-3.10.0.tar.gz (2.3MB)
     |████████████████████████████████| 2.3MB 482kB/s 
Building wheels for collected packages: peewee
  Building wheel for peewee (setup.py) ... done
  Created wheel for peewee: filename=peewee-3.10.0-cp37-none-any.whl size=119321 sha256=4871885a538c6ab3ab7d923aeec56b3018062fa9d9da8acd81264831103d5932
  Stored in directory: /tmp/pip-ephem-wheel-cache-0i30f038/wheels/5c/bb/b7/365edb46082a8da5c202eb4dc86ae335e4b322e6b1d430dbc8
Successfully built peewee
Installing collected packages: peewee
Successfully installed peewee-3.10.0

(tempenv-50a4169627007) ↪ python
Python 3.7.4 (default, Jul  9 2019, 15:11:16) 
[GCC 7.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import playhouse.sqlite_ext 
>>> playhouse.sqlite_ext.CYTHON_SQLITE_EXTENSIONS
False
>>> 
```