Problem with dependencies in installation on window

[tessanix]

Hello! Firstly congratulation for this module project it seem very useful!

Unfortunately I have a problem in the installation. I use Anaconda as IDE and when I launch a pip instal btgym on my anaconda powershell prompt I have this error :
`(tensorflow_env) PS C:\Users\Tesso> pip install C:\Users\Tesso\OneDrive\Bureau\btgym-master
Processing c:\users\tesso\onedrive\bureau\btgym-master
Requirement already satisfied: tensorflow>=1.5 in d:\anaconda3\envs\tensorflow_env\lib\site-packages (from btgym==0.0.8) (2.1.0)
Collecting opencv-python
Using cached opencv_python-4.2.0.34-cp37-cp37m-win_amd64.whl (33.0 MB)
Requirement already satisfied: gym[atari] in d:\anaconda3\envs\tensorflow_env\lib\site-packages (from btgym==0.0.8) (0.17.1)
WARNING: gym 0.17.1 does not provide the extra 'atari'
Collecting backtrader
Using cached backtrader-1.9.74.123-py2.py3-none-any.whl (411 kB)
Requirement already satisfied: pyzmq in d:\anaconda3\envs\tensorflow_env\lib\site-packages (from btgym==0.0.8) (18.1.1)
Collecting matplotlib<=2.0.2
Using cached matplotlib-2.0.2.tar.gz (53.9 MB)
ERROR: Command errored out with exit status 1:
command: 'D:\Anaconda3\envs\tensorflow_env\python.exe' -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\Tesso\AppData\Local\Temp\pip-install-j_ae94ia\matplotlib\setup.py'"'"'; file='"'"'C:\Users\Tesso\AppData\Local\Temp\pip-install-j_ae94ia\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 'C:\Users\Tesso\AppData\Local\Temp\pip-install-j_ae94ia\matplotlib\pip-egg-info'
cwd: C:\Users\Tesso\AppData\Local\Temp\pip-install-j_ae94ia\matplotlib
Complete output (63 lines):
============================================================================
Edit setup.cfg to change the build options

BUILDING MATPLOTLIB
            matplotlib: yes [2.0.2]
                python: yes [3.7.7 (default, Apr 15 2020, 05:09:04) [MSC
                        v.1916 64 bit (AMD64)]]
              platform: yes [win32]

REQUIRED DEPENDENCIES AND EXTENSIONS
                 numpy: yes [version 1.18.1]
                   six: yes [using six version 1.14.0]
              dateutil: yes [using dateutil version 2.8.1]
           functools32: yes [Not required]
          subprocess32: yes [Not required]
                  pytz: yes [using pytz version 2019.3]
                cycler: yes [using cycler version 0.10.0]
               tornado: yes [using tornado version 6.0.4]
             pyparsing: yes [using pyparsing version 2.4.6]
                libagg: yes [pkg-config information for 'libagg' could not
                        be found. Using local copy.]
              freetype: no  [The C/C++ header for freetype (ft2build.h)
                        could not be found.  You may need to install the
                        development package.]
                   png: no  [The C/C++ header for png (png.h) could not be
                        found.  You may need to install the development
                        package.]
                 qhull: yes [pkg-config information for 'qhull' 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: yes [installing, Qt: 5.9.6, PyQt: 5.9.6]
                qt4agg: no  [PySide not found; PyQt4 not found]
               gtk3agg: no  [Requires pygobject to be installed.]
             gtk3cairo: no  [Requires cairocffi or pycairo to be installed.]
                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: no  [cairocffi or pycairo not found]
             windowing: yes [installing]

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, png
----------------------------------------

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

I think I just have to include freetype.h and png.h files in some folder but I don't know which one.
Can you help me please?

[Kismuz]

@tessanix ,s mentioned in readme, bygym does not seem to work correctly under windows, sorry for that.
https://github.com/Kismuz/btgym#issues
your particular error is about failed attempt to build earlier-version matplotlib
see also: #17