Kivy. Text provider error

Question

Start a simple sample of "Hello world". And got an error.

[CRITICAL] [Text        ] Unable to find any valuable Text provider at all!
[CRITICAL] [App         ] Unable to get a Text provider, abort.

Is it mean that I have no some font libs? Tried to install dev libs of actual fonts in system.

System: Centos. Python version 2.7

Answer 1

According to kivy.core.text code:

...

# Load the appropriate provider

Label = core_select_lib('text', (
    ('pygame', 'text_pygame', 'LabelPygame'),
    ('sdlttf', 'text_sdlttf', 'LabelSDLttf'),
    ('pil', 'text_pil', 'LabelPIL'),
))

if 'KIVY_DOC' not in os.environ:
    if not Label:
        from kivy.logger import Logger
        import sys
        Logger.critical('App: Unable to get a Text provider, abort.')
        sys.exit(1)

...

, your system is missing required package. Install one of them first.

Answer 2

You are missing the SDL TTF library required by PyGame. On Ubuntu, this is a system package called "libsdl-ttf2.0-dev". I think on CentOS it is called "SDL_ttf-devel". You can ensure you have the rest of the PyGame dependencies installed by looking at this PyGame install for RedHat page.