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purism@pureos:~$ apt list python3.9
Listing... Done
python3.9/byzantium,now 3.9.2-1 arm64 [installed,automatic]
purism@pureos:~$ apt list pkg-config
Listing... Done
pkg-config/byzantium,now 0.29.2-1 arm64 [installed,automatic]
purism@pureos:~$ apt list python3-pip -a
Listing... Done
python3-pip/byzantium,now 20.3.4-4+deb11u1 all [installed]

purism@pureos:~$ sudo apt install python3-pip
[sudo] password for purism:
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
python3-pip is already the newest version (20.3.4-4+deb11u1).
The following package was automatically installed and is no longer required:
  libwlroots7c
Use 'sudo apt autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 4 not upgraded.
purism@pureos:~$ python3 -m pip install --upgrade pip
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: pip in ./.local/lib/python3.9/site-packages (22.0.4)
purism@pureos:~$ python3 -m pip uninstall raylib
WARNING: Skipping raylib as it is not installed.
purism@pureos:~$ python3 -m pip install -U pip setuptools
Defaulting to user installation because normal site-packages is not writeable
Requirement already satisfied: pip in ./.local/lib/python3.9/site-packages (22.0.4)
Requirement already satisfied: setuptools in /usr/lib/python3/dist-packages (52.0.0)
Collecting setuptools
  Downloading setuptools-62.1.0-py3-none-any.whl (1.1 MB)
     ━━━━━━━ 1.1/1… 862.7   eta 0:00:00
             MB     kB/s
Installing collected packages: setuptools
Successfully installed setuptools-62.1.0
purism@pureos:~$ pip show setuptools packaging cffi pycparser raylib
WARNING: Package(s) not found: raylib
Name: setuptools
Version: 62.1.0
Summary: Easily download, build, install, upgrade, and uninstall Python packages
Home-page: https://github.com/pypa/setuptools
Author: Python Packaging Authority
Author-email: [email protected]
License: UNKNOWN
Location: /home/purism/.local/lib/python3.9/site-packages
Requires:
Required-by: setuptools-scm
---
Name: packaging
Version: 21.3
Summary: Core utilities for Python packages
Home-page: https://github.com/pypa/packaging
Author: Donald Stufft and individual contributors
Author-email: [email protected]
License: BSD-2-Clause or Apache-2.0
Location: /home/purism/.local/lib/python3.9/site-packages
Requires: pyparsing
Required-by: matplotlib, setuptools-scm
---
Name: cffi
Version: 1.15.0
Summary: Foreign Function Interface for Python calling C code.
Home-page: http://cffi.readthedocs.org
Author: Armin Rigo, Maciej Fijalkowski
Author-email: [email protected]
License: MIT
Location: /home/purism/.local/lib/python3.9/site-packages
Requires: pycparser
Required-by: pymunk
---
Name: pycparser
Version: 2.21
Summary: C parser in Python
Home-page: https://github.com/eliben/pycparser
Author: Eli Bendersky
Author-email: [email protected]
License: BSD
Location: /home/purism/.local/lib/python3.9/site-packages
Requires:
Required-by: cffi
purism@pureos:~$ python3 -m pip install raylib
Defaulting to user installation because normal site-packages is not writeable
Collecting raylib
  Using cached raylib-4.0.0.6.tar.gz (61 kB)
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error

  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [29 lines of output]
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "/tmp/pip-install-oo9h0oq5/raylib_cbbb74376ca54a7ab13dbb1b7e06e37a/setup.py", line 20, in <module>
          setup(
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/__init__.py", line 87, in setup
          return distutils.core.setup(**attrs)
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/_distutils/core.py", line 109, in setup
          _setup_distribution = dist = klass(attrs)
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/dist.py", line 462, in __init__
          _Distribution.__init__(
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/_distutils/dist.py", line 293, in __init__
          self.finalize_options()
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/dist.py", line 886, in finalize_options
          ep(self)
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/dist.py", line 907, in _finalize_setup_keywords
          ep.load()(self, ep.name, value)
        File "/home/purism/.local/lib/python3.9/site-packages/cffi/setuptools_ext.py", line 219, in cffi_modules
          add_cffi_module(dist, cffi_module)
        File "/home/purism/.local/lib/python3.9/site-packages/cffi/setuptools_ext.py", line 49, in add_cffi_module
          execfile(build_file_name, mod_vars)
        File "/home/purism/.local/lib/python3.9/site-packages/cffi/setuptools_ext.py", line 25, in execfile
          exec(code, glob, glob)
        File "raylib/build.py", line 189, in <module>
          build_unix()
        File "raylib/build.py", line 101, in build_unix
          raise Exception("ERROR: raylib not found by pkg-config.  Please install pkg-config and Raylib.")
      Exception: ERROR: raylib not found by pkg-config.  Please install pkg-config and Raylib.
      not windows, trying Unix build
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
purism@pureos:~$ pip3 install --no-binary raylib --upgrade --force-reinstall raylib
Defaulting to user installation because normal site-packages is not writeable
Collecting raylib
  Using cached raylib-4.0.0.6.tar.gz (61 kB)
  Preparing metadata (setup.py) ... error
  error: subprocess-exited-with-error

  × python setup.py egg_info did not run successfully.
  │ exit code: 1
  ╰─> [29 lines of output]
      Traceback (most recent call last):
        File "<string>", line 2, in <module>
        File "<pip-setuptools-caller>", line 34, in <module>
        File "/tmp/pip-install-2s152_9n/raylib_714ca61e5fb7412c9f3a9b9ebe0e7576/setup.py", line 20, in <module>
          setup(
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/__init__.py", line 87, in setup
          return distutils.core.setup(**attrs)
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/_distutils/core.py", line 109, in setup
          _setup_distribution = dist = klass(attrs)
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/dist.py", line 462, in __init__
          _Distribution.__init__(
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/_distutils/dist.py", line 293, in __init__
          self.finalize_options()
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/dist.py", line 886, in finalize_options
          ep(self)
        File "/home/purism/.local/lib/python3.9/site-packages/setuptools/dist.py", line 907, in _finalize_setup_keywords
          ep.load()(self, ep.name, value)
        File "/home/purism/.local/lib/python3.9/site-packages/cffi/setuptools_ext.py", line 219, in cffi_modules
          add_cffi_module(dist, cffi_module)
        File "/home/purism/.local/lib/python3.9/site-packages/cffi/setuptools_ext.py", line 49, in add_cffi_module
          execfile(build_file_name, mod_vars)
        File "/home/purism/.local/lib/python3.9/site-packages/cffi/setuptools_ext.py", line 25, in execfile
          exec(code, glob, glob)
        File "raylib/build.py", line 189, in <module>
          build_unix()
        File "raylib/build.py", line 101, in build_unix
          raise Exception("ERROR: raylib not found by pkg-config.  Please install pkg-config and Raylib.")
      Exception: ERROR: raylib not found by pkg-config.  Please install pkg-config and Raylib.
      not windows, trying Unix build
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.

note: This is an issue with the package mentioned above, not pip.
hint: See above for details.
purism@pureos:~$