/usr/lib/python3/dist-packages/setuptools/dist.py:473: UserWarning: Normalizing '0.3.0-dev' to '0.3.0.dev0'
  warnings.warn(
running install
running bdist_egg
running egg_info
creating fastgrab.egg-info
writing fastgrab.egg-info/PKG-INFO
writing dependency_links to fastgrab.egg-info/dependency_links.txt
writing top-level names to fastgrab.egg-info/top_level.txt
writing manifest file 'fastgrab.egg-info/SOURCES.txt'
reading manifest file 'fastgrab.egg-info/SOURCES.txt'
writing manifest file 'fastgrab.egg-info/SOURCES.txt'
installing library code to build/bdist.linux-x86_64/egg
running install_lib
running build_py
creating build
creating build/lib.linux-x86_64-3.8
creating build/lib.linux-x86_64-3.8/fastgrab
copying fastgrab/__init__.py -> build/lib.linux-x86_64-3.8/fastgrab
copying fastgrab/metadata.py -> build/lib.linux-x86_64-3.8/fastgrab
copying fastgrab/screenshot.py -> build/lib.linux-x86_64-3.8/fastgrab
running build_ext
building 'fastgrab._linux_x11' extension
creating build/temp.linux-x86_64-3.8
creating build/temp.linux-x86_64-3.8/fastgrab
creating build/temp.linux-x86_64-3.8/fastgrab/linux_x11
x86_64-linux-gnu-gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/usr/local/lib/python3.8/dist-packages/numpy/core/include -I/usr/include/python3.8 -c fastgrab/linux_x11/screenshot.c -o build/temp.linux-x86_64-3.8/fastgrab/linux_x11/screenshot.o -fno-strict-aliasing -std=c11 -mtune=native
fastgrab/linux_x11/screenshot.c:2:10: fatal error: X11/Xlib.h: No such file or directory
    2 | #include <X11/Xlib.h>
      |          ^~~~~~~~~~~~
compilation terminated.
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1