[MacPorts] #63442: py39-black @21.8b0_0: cannot be installed or upgraded

[MacPorts]

#63442: py39-black @21.8b0_0: cannot be installed or upgraded
----------------------+------------------------
 Reporter:  JD-Veiga  |      Owner:  (none)
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.7.1
 Keywords:            |       Port:  py39-black
----------------------+------------------------
 Hi,

 When trying to install (or upgrade) py39-black, it fails:


 {{{
 Executing:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_python_py-
 black/py39-black/work/black-21.8b0" &&
 /opt/local/Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9
 setup.py --no-user-cfg build -j4
 WARNING: The index url "''" seems invalid, please provide a scheme.
 WARNING: Location '''/setuptools-scm/' is ignored: it is either a non-
 existing path or lacks a specific scheme.
 WARNING: Location '''' is ignored: it is either a non-existing path or
 lacks a specific scheme.
 ERROR: Could not find a version that satisfies the requirement
 setuptools_scm~=6.0.1 (from versions: none)
 ERROR: No matching distribution found for setuptools_scm~=6.0.1
 Traceback (most recent call last):
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/setuptools/installer.py", line 75, in fetch_build_egg
     subprocess.check_call(cmd)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9/subprocess.py",
 line 373, in check_call
     raise CalledProcessError(retcode, cmd)
 subprocess.CalledProcessError: Command
 '['/opt/local/Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9',
 '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps', '-w',
 '/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_python_py-
 black/py39-black/work/.tmp/tmp_i6xcbz0', '--quiet', '--index-url', "''",
 '--find-links', "''", 'setuptools_scm~=6.0.1']' returned non-zero exit
 status 1.

 The above exception was the direct cause of the following exception:

 Traceback (most recent call last):
   File
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_python_py-
 black/py39-black/work/black-21.8b0/setup.py", line 48, in <module>
     setup(
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/setuptools/__init__.py", line 152, in setup
     _install_setup_requires(attrs)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/setuptools/__init__.py", line 147, in
 _install_setup_requires
     dist.fetch_build_eggs(dist.setup_requires)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/setuptools/dist.py", line 785, in fetch_build_eggs
     resolved_dists = pkg_resources.working_set.resolve(
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pkg_resources/__init__.py", line 766, in resolve
     dist = best[req.key] = env.best_match(
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pkg_resources/__init__.py", line 1051, in best_match
     return self.obtain(req, installer)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/pkg_resources/__init__.py", line 1063, in obtain
     return installer(requirement)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/setuptools/dist.py", line 844, in fetch_build_egg
     return fetch_build_egg(self, req)
   File
 "/opt/local/Library/Frameworks/Python.framework/Versions/3.9/lib/python3.9
 /site-packages/setuptools/installer.py", line 77, in fetch_build_egg
     raise DistutilsError(str(e)) from e
 distutils.errors.DistutilsError: Command
 '['/opt/local/Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9',
 '-m', 'pip', '--disable-pip-version-check', 'wheel', '--no-deps', '-w',
 '/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_python_py-
 black/py39-black/work/.tmp/tmp_i6xcbz0', '--quiet', '--index-url', "''",
 '--find-links', "''", 'setuptools_scm~=6.0.1']' returned non-zero exit
 status 1.
 Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports
 .org_macports_release_tarballs_ports_python_py-
 black/py39-black/work/black-21.8b0" &&
 /opt/local/Library/Frameworks/Python.framework/Versions/3.9/bin/python3.9
 setup.py --no-user-cfg build -j4
 Exit code: 1
 Error: Failed to build py39-black: command execution failed
 }}}


 Running on:

 macports 2.7.1
 py39-setuptools_scm @6.0.1_0 (active)
 Python 3.9.7
 macOS 10.14.6 (Mojave)

 Thank you.

-- 
Ticket URL: <https://trac.macports.org/ticket/63442>
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