[root@myarch ~]# pip install mu-editor
Collecting mu-editor
  Using cached mu_editor-1.0.3-py3-none-any.whl (2.0 MB)
Requirement already satisfied: Pillow>=5.2.0 in /usr/lib/python3.9/site-packages (from mu-editor) (8.1.0)
Requirement already satisfied: requests>=2.19.1 in /usr/lib/python3.9/site-packages (from mu-editor) (2.25.1)
Requirement already satisfied: appdirs>=1.4.3 in /usr/lib/python3.9/site-packages (from mu-editor) (1.4.4)
Collecting gpiozero>=1.4.1
  Using cached gpiozero-1.5.1-py2.py3-none-any.whl (138 kB)
Collecting colorzero
  Using cached colorzero-1.1-py2.py3-none-any.whl (33 kB)
Collecting guizero>=1.1.0
  Using cached guizero-1.1.1-py3-none-any.whl (42 kB)
Collecting matplotlib==2.2.2
  Using cached matplotlib-2.2.2.tar.gz (37.3 MB)
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-6mjb5ooi/matplotlib_c4ad9e5a015c4232b32ed3c373d096ae/setup.py'"'"'; __file__='"'"'/tmp/pip-install-6mjb5ooi/matplotlib_c4ad9e5a015c4232b32ed3c373d096ae/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-pip-egg-info-p4q7dmar
         cwd: /tmp/pip-install-6mjb5ooi/matplotlib_c4ad9e5a015c4232b32ed3c373d096ae/
    Complete output (67 lines):
    IMPORTANT WARNING:
        pkg-config is not installed.
        matplotlib may not be able to find some of its dependencies
    ============================================================================
    Edit setup.cfg to change the build options
    BUILDING MATPLOTLIB
                matplotlib: yes [2.2.2]
                    python: yes [3.9.1 (default, Dec 13 2020, 11:55:53)  [GCC
                            10.2.0]]
                  platform: yes [linux]
    REQUIRED DEPENDENCIES AND EXTENSIONS
                     numpy: yes [version 1.19.5]
          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: yes [version 1.6.37]
                     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]
    (setup.py:2656): Gtk-WARNING **: 13:14:52.136: Locale not supported by C library.
    	Using the fallback 'C' locale.
                   gtk3agg: yes [installing, version 3.24.24]
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-install-6mjb5ooi/matplotlib_c4ad9e5a015c4232b32ed3c373d096ae/setup.py", line 197, in <module>
        msg = pkg.install_help_msg()
      File "/tmp/pip-install-6mjb5ooi/matplotlib_c4ad9e5a015c4232b32ed3c373d096ae/setupext.py", line 592, in install_help_msg
        release = platform.linux_distribution()[0].lower()
    AttributeError: module 'platform' has no attribute 'linux_distribution'
                 gtk3cairo: no  [Requires cairocffi or pycairo to be installed.]
                    gtkagg: no  [Requires pygtk]
                     tkagg: yes [installing; run-time loading from Python Tcl /
                     wxagg: no  [requires wxPython]
                       gtk: no  [Requires pygtk]
                       agg: yes [installing]
                     cairo: no  [cairocffi or pycairo not found]
                 windowing: no  [Microsoft Windows only]
    OPTIONAL LATEX DEPENDENCIES
                    dvipng: no
               ghostscript: no
                     latex: no
                   pdftops: no
    OPTIONAL PACKAGE DATA
                      dlls: no  [skipping due to configuration]
    ============================================================================
                            * The following required packages can not be built:
                            * freetype
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.