Adding the buildgen from pypi to the plugins list causes some build failures (full stack trace included below).
$ ./pants compile
New python executable in /Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/pants.xyWThV/install/bin/python
Installing setuptools, pip, wheel...done.
Requirement already satisfied (use --upgrade to upgrade): setuptools<31.0,>=5.4.1 in /Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/pants.xyWThV/install/lib/python2.7/site-packages
Collecting pantsbuild.pants==1.2.0
Downloading pantsbuild.pants-1.2.0.tar.gz (892kB)
100% |████████████████████████████████| 901kB 845kB/s
Collecting twitter.common.collections<0.4,>=0.3.1 (from pantsbuild.pants==1.2.0)
Collecting ansicolors==1.0.2 (from pantsbuild.pants==1.2.0)
Collecting setproctitle==1.1.10 (from pantsbuild.pants==1.2.0)
Collecting six<2,>=1.9.0 (from pantsbuild.pants==1.2.0)
Using cached six-1.10.0-py2.py3-none-any.whl
Collecting packaging==16.7 (from pantsbuild.pants==1.2.0)
Using cached packaging-16.7-py2.py3-none-any.whl
Collecting pathspec==0.3.4 (from pantsbuild.pants==1.2.0)
Collecting scandir==1.2 (from pantsbuild.pants==1.2.0)
Collecting twitter.common.dirutil<0.4,>=0.3.1 (from pantsbuild.pants==1.2.0)
Collecting requests<2.6,>=2.5.0 (from pantsbuild.pants==1.2.0)
Using cached requests-2.5.3-py2.py3-none-any.whl
Collecting pystache==0.5.3 (from pantsbuild.pants==1.2.0)
Collecting psutil==4.3.0 (from pantsbuild.pants==1.2.0)
Collecting pex==1.1.13 (from pantsbuild.pants==1.2.0)
Downloading pex-1.1.13-py2.py3-none-any.whl (105kB)
100% |████████████████████████████████| 112kB 2.0MB/s
Collecting docutils<0.13,>=0.12 (from pantsbuild.pants==1.2.0)
Collecting Markdown==2.1.1 (from pantsbuild.pants==1.2.0)
Collecting Pygments==1.4 (from pantsbuild.pants==1.2.0)
Collecting twitter.common.confluence<0.4,>=0.3.1 (from pantsbuild.pants==1.2.0)
Collecting fasteners==0.14.1 (from pantsbuild.pants==1.2.0)
Using cached fasteners-0.14.1-py2.py3-none-any.whl
Collecting coverage<3.8,>=3.7 (from pantsbuild.pants==1.2.0)
Collecting pytest<2.7,>=2.6 (from pantsbuild.pants==1.2.0)
Downloading pytest-2.6.4.tar.gz (512kB)
100% |████████████████████████████████| 522kB 1.2MB/s
Collecting pytest-cov<1.9,>=1.8 (from pantsbuild.pants==1.2.0)
Downloading pytest-cov-1.8.1.tar.gz
Collecting futures==3.0.5 (from pantsbuild.pants==1.2.0)
Using cached futures-3.0.5-py2-none-any.whl
Collecting cffi==1.7.0 (from pantsbuild.pants==1.2.0)
Using cached cffi-1.7.0-cp27-cp27m-macosx_10_10_intel.whl
Collecting lmdb==0.89 (from pantsbuild.pants==1.2.0)
Collecting pywatchman==1.3.0 (from pantsbuild.pants==1.2.0)
Collecting twitter.common.lang==0.3.9 (from twitter.common.collections<0.4,>=0.3.1->pantsbuild.pants==1.2.0)
Collecting pyparsing (from packaging==16.7->pantsbuild.pants==1.2.0)
Using cached pyparsing-2.1.10-py2.py3-none-any.whl
Collecting twitter.common.log==0.3.9 (from twitter.common.confluence<0.4,>=0.3.1->pantsbuild.pants==1.2.0)
Collecting monotonic>=0.1 (from fasteners==0.14.1->pantsbuild.pants==1.2.0)
Using cached monotonic-1.2-py2.py3-none-any.whl
Collecting py>=1.4.25 (from pytest<2.7,>=2.6->pantsbuild.pants==1.2.0)
Downloading py-1.4.32-py2.py3-none-any.whl (82kB)
100% |████████████████████████████████| 92kB 2.0MB/s
Collecting cov-core>=1.14.0 (from pytest-cov<1.9,>=1.8->pantsbuild.pants==1.2.0)
Downloading cov-core-1.15.0.tar.gz
Collecting pycparser (from cffi==1.7.0->pantsbuild.pants==1.2.0)
Collecting twitter.common.options==0.3.9 (from twitter.common.log==0.3.9->twitter.common.confluence<0.4,>=0.3.1->pantsbuild.pants==1.2.0)
Building wheels for collected packages: pantsbuild.pants, pytest, pytest-cov, cov-core
Running setup.py bdist_wheel for pantsbuild.pants ... done
Stored in directory: /Users/todd/Library/Caches/pip/wheels/ce/ff/3a/2d8598b56bdfb9468ea67ee963a03c3b35b22dd597084a7cb1
Running setup.py bdist_wheel for pytest ... done
Stored in directory: /Users/todd/Library/Caches/pip/wheels/ca/1c/fe/8b76e537572f91c810910e822cccb178ba3156e432e644ac89
Running setup.py bdist_wheel for pytest-cov ... done
Stored in directory: /Users/todd/Library/Caches/pip/wheels/e5/94/08/eab43cda4e17e6ae729ed2cd832d7ca4e3ddca7fa6886ec2b8
Running setup.py bdist_wheel for cov-core ... done
Stored in directory: /Users/todd/Library/Caches/pip/wheels/86/e1/c2/9ff8cfe9773ce07003f2c2be096e169af4614c2f634671d49b
Successfully built pantsbuild.pants pytest pytest-cov cov-core
Installing collected packages: twitter.common.lang, twitter.common.collections, ansicolors, setproctitle, six, pyparsing, packaging, pathspec, scandir, twitter.common.dirutil, requests, pystache, psutil, pex, docutils, Markdown, Pygments, twitter.common.options, twitter.common.log, twitter.common.confluence, monotonic, fasteners, coverage, py, pytest, cov-core, pytest-cov, futures, pycparser, cffi, lmdb, pywatchman, pantsbuild.pants
Successfully installed Markdown-2.1.1 Pygments-1.4 ansicolors-1.0.2 cffi-1.7.0 cov-core-1.15.0 coverage-3.7.1 docutils-0.12 fasteners-0.14.1 futures-3.0.5 lmdb-0.89 monotonic-1.2 packaging-16.7 pantsbuild.pants-1.2.0 pathspec-0.3.4 pex-1.1.13 psutil-4.3.0 py-1.4.32 pycparser-2.17 pyparsing-2.1.10 pystache-0.5.3 pytest-2.6.4 pytest-cov-1.8.1 pywatchman-1.3.0 requests-2.5.3 scandir-1.2 setproctitle-1.1.10 six-1.10.0 twitter.common.collections-0.3.9 twitter.common.confluence-0.3.9 twitter.common.dirutil-0.3.9 twitter.common.lang-0.3.9 twitter.common.log-0.3.9 twitter.common.options-0.3.9
You are using pip version 8.1.2, however version 9.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Exception caught: (<class 'pkg_resources.ContextualVersionConflict'>)
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/bin/pants", line 11, in <module>
sys.exit(main())
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/pants_exe.py", line 44, in main
PantsRunner(exiter).run()
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/pants_runner.py", line 57, in run
options_bootstrapper=options_bootstrapper)
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/pants_runner.py", line 46, in _run
return LocalPantsRunner(exiter, args, env, options_bootstrapper=options_bootstrapper).run()
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/local_pants_runner.py", line 53, in run
self._maybe_profiled(self._run)
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/local_pants_runner.py", line 50, in _maybe_profiled
runner()
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/local_pants_runner.py", line 59, in _run
options, build_config = OptionsInitializer(options_bootstrapper, exiter=self._exiter).setup()
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/options_initializer.py", line 174, in setup
backends)
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/options_initializer.py", line 83, in _load_plugins
return load_backends_and_plugins(plugins, working_set, backend_packages)
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/extension_loader.py", line 37, in load_backends_and_plugins
load_plugins(build_configuration, plugins or [], working_set)
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pants/bin/extension_loader.py", line 83, in load_plugins
aliases = entries['build_file_aliases'].load()()
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2228, in load
self.require(*args, **kwargs)
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2245, in require
items = working_set.resolve(reqs, env, installer)
File "/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/1.2.0/lib/python2.7/site-packages/pkg_resources/__init__.py", line 834, in resolve
raise VersionConflict(dist, req).with_context(dependent_req)
Exception message: (setuptools 21.2.1 (/Users/todd/.cache/pants/setup/bootstrap-Darwin-x86_64/pants.xyWThV/install/lib/python2.7/site-packages), Requirement.parse('setuptools==5.4.1'), set(['pantsbuild.pants']))