Problems with the requirements installation

[InsalataCondita]

I've tried to install the requirements but this appened:
Downloading matplotlib-2.2.3.tar.gz (36.8 MB)
|████████████████████████████████| 36.8 MB 4.9 MB/s
ERROR: Command errored out with exit status 1:
command: /usr/bin/python3 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-7jm6q6pd/matplotlib/setup.py'"'"'; file='"'"'/tmp/pip-install-7jm6q6pd/matplotlib/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(file);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, file, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-install-7jm6q6pd/matplotlib/pip-egg-info
cwd: /tmp/pip-install-7jm6q6pd/matplotlib/
Complete output (62 lines):
============================================================================
Edit setup.cfg to change the build options

BUILDING MATPLOTLIB
            matplotlib: yes [2.2.3]
                python: yes [3.8.2 (default, Mar 13 2020, 10:14:16)  [GCC
                        9.3.0]]
              platform: yes [linux]

REQUIRED DEPENDENCIES AND EXTENSIONS
                 numpy: yes [not found. pip may install it below.]
      install_requires: yes [handled by setuptools]
                libagg: yes [pkg-config information for 'libagg' could not
                        be found. Using local copy.]
              freetype: no  [The C/C++ header for freetype2 (ft2build.h)
                        could not be found.  You may need to install the
                        development package.]
                   png: no  [pkg-config information for 'libpng' could not
                        be found.]
                 qhull: yes [pkg-config information for 'libqhull' could not
                        be found. Using local copy.]

OPTIONAL SUBPACKAGES
           sample_data: yes [installing]
              toolkits: yes [installing]
                 tests: no  [skipping due to configuration]
        toolkits_tests: no  [skipping due to configuration]

OPTIONAL BACKEND EXTENSIONS
                macosx: no  [Mac OS-X only]
                qt5agg: no  [PySide2 not found; PyQt5 not found]
                qt4agg: no  [PySide not found; PyQt4 not found]
               gtk3agg: yes [installing, version 3.17.24]
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/tmp/pip-install-7jm6q6pd/matplotlib/setup.py", line 198, in <module>
    msg = pkg.install_help_msg()
  File "/tmp/pip-install-7jm6q6pd/matplotlib/setupext.py", line 592, in install_help_msg
    release = platform.linux_distribution()[0].lower()
AttributeError: module 'platform' has no attribute 'linux_distribution'
             gtk3cairo: yes [installing, version 3.17.24]
                gtkagg: no  [Requires pygtk]
                 tkagg: yes [installing; run-time loading from Python Tcl /
                        Tk]
                 wxagg: no  [requires wxPython]
                   gtk: no  [Requires pygtk]
                   agg: yes [installing]
                 cairo: yes [installing, pycairo version 1.16.2]
             windowing: no  [Microsoft Windows only]

OPTIONAL LATEX DEPENDENCIES
                dvipng: no
           ghostscript: yes [version 9.50]
                 latex: no
               pdftops: yes [version 0.86.1]

OPTIONAL PACKAGE DATA
                  dlls: no  [skipping due to configuration]

============================================================================
                        * The following required packages can not be built:
                        * freetype, png
----------------------------------------

ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

Can someone help me please?

[wuffeljunior90]

I had the same problem today.
Just install the packages one by one.
pip install

Regards :)