Failed dependencies about synapse

This helped me too with a pykerberos issue

[shehreyarahmedkohati]

These needed installing too

sudo apt-get install gcc python-dev libkrb5-dev

for lxml
sudo apt-get install -y libxml2-dev libxslt1-dev

for cryptography
sudo apt-get install -y libssl-dev libffi-dev

After which the dependencies from requirement.txt where able to be installed.

[ninSmith]

Updated thanks.

[emmanuelnunoe]

Thanks @shehreyarahmedkohati ! all the day looking for this.

[shehreyarahmedkohati]

@emmanuelnunoe glad it helped!