py35-cython fails to build in trace mode due to missing dependency on py35-setuptools

[neverpanic (Clemens Lang)]

Upgrading to py35-cython 0.27 fails in the build phase due to what is apparently a missing dependency on py35-setuptools.

The relevant part from the log is:

:info:build running build_ext
:info:build Unable to find pgen, not compiling formal grammar.
:info:build /opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/dist.py:261: UserWarning: Unknown distribution option: 'entry_points'
:info:build   warnings.warn(msg)
:info:build /opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/dist.py:261: UserWarning: Unknown distribution option: 'zip_safe'
:info:build   warnings.warn(msg)
:info:build Traceback (most recent call last):
:info:build   File "setup.py", line 278, in <module>
:info:build     **setup_args
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/core.py", line 148, in setup
:info:build     dist.run_commands()
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/dist.py", line 955, in run_commands
:info:build     self.run_command(cmd)
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/dist.py", line 974, in run_command
:info:build     cmd_obj.run()
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/command/build.py", line 135, in run
:info:build     self.run_command(cmd_name)
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/cmd.py", line 313, in run_command
:info:build     self.distribution.run_command(command)
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/dist.py", line 973, in run_command
:info:build     cmd_obj.ensure_finalized()
:info:build   File "/opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/distutils/cmd.py", line 107, in ensure_finalized
:info:build     self.finalize_options()
:info:build   File "/opt/local/var/macports/build/_opt_dports_python_py-cython/py35-cython/work/Cython-0.27/Cython/Distutils/build_ext.py", line 19, in finalize_options
:info:build     self.distribution.ext_modules)
:info:build   File "/opt/local/var/macports/build/_opt_dports_python_py-cython/py35-cython/work/Cython-0.27/Cython/Build/Dependencies.py", line 915, in cythonize
:info:build     aliases=aliases)
:info:build   File "/opt/local/var/macports/build/_opt_dports_python_py-cython/py35-cython/work/Cython-0.27/Cython/Build/Dependencies.py", line 758, in create_extension_list
:info:build     Extension_distutils = sys.modules['setuptools.extension']._Extension
:info:build KeyError: 'setuptools.extension'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_dports_python_py-cython/py35-cython/work/Cython-0.27" && /opt/local/Library/Frameworks/Python.framework/Versions/3.5/bin/python3.5 setup.py --no-user-cfg build 
:info:build Exit code: 1
:warn:build The following existing files were hidden from the build system by trace mode:
:msg:build   /opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/setuptools/__init__.py
:msg:build   /opt/local/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/setuptools/command/__init__.py
:error:build Failed to build py35-cython: command execution failed
:debug:build Error code: CHILDSTATUS 48691 1
:debug:build Backtrace: command execution failed
:debug:build     while executing
:debug:build "system {*}$notty {*}$nice $fullcmdstring"
:debug:build     invoked from within
:debug:build "command_exec build"
:debug:build     (procedure "portbuild::build_main" line 8)
:debug:build     invoked from within
:debug:build "$procedure $targetname"
:error:build See /opt/local/var/macports/logs/_opt_dports_python_py-cython/py35-cython/main.log for details.

I'm also attaching the complete logfile.

Adding the dependency fixes the build. Here's a patch:

python/py-cython/Portfile

@@ -31 +31 @@
                     sha256  b932b5194e87a8b853d493dc1b46e38632d6846a86f55b8346eb9c6ec3bdc00b
 
 if {${name} ne ${subport}} {
+    depends_build       port:py${python.version}-setuptools
     depends_run         port:cython_select
     test.run            no

[Andrew Stromnov <stromnov@…>]

In a1dbca3a81d6a02a7ec63ed64fb266d88d1a00cd/macports-ports:

py-cython: add missing setuptools dependency

Fixes: #54897