Add python-cffi to dependencies

2 jobs for master in 8 minutes and 26 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
failed #4310
debian9

00:08:25

failed #4309
ubuntu1804

00:07:37

 
Name Stage Failure
failed
debian9 Build
    import cffi
ImportError: No module named 'cffi'
[4/93] Generating resources_h with a custom command.
[5/93] Generating resources_c with a custom command.
[6/93] Compiling C object 'plugins/fishlim/c61e818@@fishlim@sha/dh1080.c.o'.
[7/93] Generating marshal_c with a meson_exe.py custom command.
[8/93] Generating marshal_h with a meson_exe.py custom command.
ninja: build stopped: subcommand failed.
ERROR: Job failed: exit code 1
failed
ubuntu1804 Build
   write (fh, "\n", 1);
^~~~~~~~~~~~~~~~~~~
../src/fe-gtk/xtext.c: In function 'gtk_xtext_find_char':
../src/fe-gtk/xtext.c:947:18: warning: 'outofbounds' may be used uninitialized in this function [-Wmaybe-uninitialized]
*out_of_bounds = outofbounds;
~~~~~~~~~~~~~~~^~~~~~~~~~~~~
[78/93] Compiling C object 'plugins/perl/perl@sha/perl.c.o'.
ninja: build stopped: subcommand failed.
ERROR: Job failed: exit code 1