libiio: ModuleNotFoundError: No module named 'setuptools'

[ryandesign (Ryan Carsten Schmidt)]

​libiio fails to build:

Traceback (most recent call last):
  File "/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_science_libiio/libiio/work/build/bindings/python/setup.py", line 24, in <module>
    from setuptools import setup
ModuleNotFoundError: No module named 'setuptools'
make[2]: *** [bindings/python/CMakeFiles/libiio-py] Error 1

Probably the port needs a dependency on py##-setuptools?

[ryandesign (Ryan Carsten Schmidt)]

​This is still happening.

[ryandesign (Ryan Carsten Schmidt)]

If I add the dependency on py##-setuptools, the build succeeds but destroot fails:

running install
Traceback (most recent call last):
  File "/opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/build/bindings/python/setup.py", line 60, in _check_libiio_installed
    raise OSError
OSError
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/build/bindings/python/setup.py", line 89, in <module>
    setup(**config)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/setuptools/__init__.py", line 161, in setup
    return distutils.core.setup(**attrs)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/distutils/dist.py", line 966, in run_commands
    self.run_command(cmd)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/distutils/dist.py", line 985, in run_command
    cmd_obj.run()
  File "/opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/build/bindings/python/setup.py", line 43, in run
    self._check_libiio_installed()
  File "/opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/build/bindings/python/setup.py", line 66, in _check_libiio_installed
    raise Exception(msg)
Exception: The libiio library could not be found.
            libiio needs to be installed first before the python bindings.
            The latest release can be found on GitHub:
            https://github.com/analogdevicesinc/libiio/releases
make: Leaving directory `/opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/build'
DEBUG: Executing proc-post-org.macports.destroot-destroot-0
xinstall: mkdir /opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/destroot/opt/local/Library/Frameworks/Python.framework
xinstall: mkdir /opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/destroot/opt/local/Library/Frameworks/Python.framework/Versions
xinstall: mkdir /opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/destroot/opt/local/Library/Frameworks/Python.framework/Versions/3.7
xinstall: mkdir /opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/destroot/opt/local/Library/Frameworks/Python.framework/Versions/3.7/lib
Error: Failed to destroot libiio: error renaming "/opt/local/var/macports/build/_Users_rschmidt_macports_macports-ports-svn-trunk-new_science_libiio/libiio/work/destroot/opt/local/lib/python3.7": no such file or directory

Sounds like libiio's python support should be in a separate py-libiio port rather than variants in the libiio port?

[ryandesign (Ryan Carsten Schmidt)]

Michael, do you agree with this course of action?

Right now everything that depends on libiio is failing on the buildbot because libiio cannot be built.

Step 1 could be to remove the python support from libiio so that it can build.

Step 2 could be to introduce a py-libiio port.

[michaelld (Michael Dickens)]

hmmm ... I don't see this on 10.14 ... when I'm in at work tomorrow I have 10.12 booted for the recent GR work & I'll see if I can replicate the issue there.

[ryandesign (Ryan Carsten Schmidt)]

You should see it on any system, provided libiio is not already installed or you use trace mode.

You can see at ​https://ports.macports.org/port/libiio/summary that it doesn't build anywhere.

[michaelld (Michael Dickens)]

Ah; OK that was the key: not already installed. Yes, now I see it too. Let me look into this.

[michaelld (Michael Dickens)]

In 5f7c3ad3911fb416f561487142524a643b0694ff/macports-ports (master):

libiio: add patch to disable checking for libiio during install

Closes: #60669