Build issues regarding tempo2

[vhaasteren]

It seems that the github actions are failing again due to some tempo2 installation issue.

I'm listing it here as an issue that affects some PRs. However, perhaps #390 fixes this

Downloading libstempo-2.5.0.tar.gz (965 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 965.6/965.6 kB 67.3 MB/s eta 0:00:00
  Installing build dependencies: started
  Installing build dependencies: finished with status 'done'
  Getting requirements to build wheel: started
  Getting requirements to build wheel: finished with status 'error'
  error: subprocess-exited-with-error
  
  × Getting requirements to build wheel did not run successfully.
  │ exit code: 1
  ╰─> [28 lines of output]
      <string>:37: UserWarning: tempo2 does not appear to be in your path.
      Traceback (most recent call last):
        File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
        File "/opt/hostedtoolcache/Python/3.8.18/x64/lib/python3.8/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 118, in get_requires_for_build_wheel
          return hook(config_settings)
        File "/tmp/pip-build-env-m75_dbw5/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 333, in get_requires_for_build_wheel
          return self._get_build_requires(config_settings, requirements=[])
        File "/tmp/pip-build-env-m75_dbw5/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 303, in _get_build_requires
          self.run_setup()
        File "/tmp/pip-build-env-m75_dbw5/overlay/lib/python3.8/site-packages/setuptools/build_meta.py", line 319, in run_setup
          exec(code, locals())
        File "<string>", line 60, in <module>
        File "<string>", line 44, in _get_tempo2_install_location
      RuntimeError:
              Cannot find tempo2 install location. Your options are:
      
              1. Use the install_tempo2.sh script without any arguments to install to default location.
              2. Install tempo2 globally in /usr/local
              3. Set the TEMPO2_PREFIX environment variable:
                  For example, if the tempo2 executable lives in /opt/local/bin:
                      TEMPO2_PREFIX=/opt/local pip install libstempo
                      or
                      export TEMPO2_PREFIX=/opt/local
                      pip install libstempo
      
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× Getting requirements to build wheel did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.
Error: Process completed with exit code 1.

[jeremy-baier]

i am wrestling with this in my enteprise_extensions PR (nanograv/enterprise_extensions#242). please let me know if you have any good ideas.

[vhaasteren]

The new dev branch of enterprise fixes this @jeremy-baier. We are no longer dependent on tempo2.

Perhaps we should do a new release and merge dev into master

[jeremy-baier]

That would be great !!