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pipenv not honoring setup_requires while locking

See original GitHub issue

Issue description

For setup.py’s which have setup_requires like cython, pipenv does not seem to be honoring it while locking the Pipfile

Expected result

Should be able to lock with setup.py requirements

Actual result

alex@amohr-C02C14YVMD6M /tmp/foo $ cat Pipfile 
[[source]]
name = "pypi"
url = "https://pypi.fbn.org/simple"
verify_ssl = true

[packages]
ddtrace = {extras = ["profiling"], version = "==0.36.1" }

[requires]
python_version = "3.8"
alex@amohr-C02C14YVMD6M /tmp/foo $ pipenv lock --verbose
Locking [dev-packages] dependencies…
Locking [packages] dependencies…
Building requirements...
Resolving dependencies...
⠙ Locking...
✘ Locking Failed! 
                          ROUND 1                           
Current constraints:
  ddtrace[profiling]==0.36.1 (from -r /var/folders/my/1cvd396x2m35py37s4lfhjv80000gp/T/pipenvsa2yqfuyrequirements/pipenv-qgladdka-constraints.txt (line 2))

Finding the best candidates:
  found candidate ddtrace[profiling]==0.36.1 (constraint was ==0.36.1)

Finding secondary dependencies:
  ddtrace[profiling]==0.36.1 not in cache, need to check index
ERROR:pip.subprocessor:Command errored out with exit status 1:
 command: /Users/alex/.local/share/virtualenvs/foo-mzLZXOua/bin/python /usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /var/folders/my/1cvd396x2m35py37s4lfhjv80000gp/T/tmp7_75fjjs
     cwd: /private/var/folders/my/1cvd396x2m35py37s4lfhjv80000gp/T/pip-resolver-uciotq_i/ddtrace
Complete output (14 lines):
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py", line 257, in <module>
    main()
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py", line 240, in main
    json_out['return_val'] = hook(**hook_input['kwargs'])
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py", line 110, in prepare_metadata_for_build_wheel
    return hook(metadata_directory, config_settings)
  File "/Users/alex/.local/share/virtualenvs/foo-mzLZXOua/lib/python3.8/site-packages/setuptools/build_meta.py", line 158, in prepare_metadata_for_build_wheel
    self.run_setup()
  File "/Users/alex/.local/share/virtualenvs/foo-mzLZXOua/lib/python3.8/site-packages/setuptools/build_meta.py", line 143, in run_setup
    exec(compile(code, __file__, 'exec'), locals())
  File "setup.py", line 9, in <module>
    from Cython.Build import cythonize  # noqa: I100
ModuleNotFoundError: No module named 'Cython'
----------------------------------------
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 807, in <module>
    main()
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 802, in main
    _main(parsed.pre, parsed.clear, parsed.verbose, parsed.system, parsed.write,
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 785, in _main
    resolve_packages(pre, clear, verbose, system, write, requirements_dir, packages)
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 746, in resolve_packages
    results, resolver = resolve(
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 728, in resolve
    return resolve_deps(
  File "/usr/local/lib/python3.8/site-packages/pipenv/utils.py", line 1371, in resolve_deps
    results, hashes, markers_lookup, resolver, skipped = actually_resolve_deps(
  File "/usr/local/lib/python3.8/site-packages/pipenv/utils.py", line 1086, in actually_resolve_deps
    resolver.resolve()
  File "/usr/local/lib/python3.8/site-packages/pipenv/utils.py", line 807, in resolve
    results = self.resolver.resolve(max_rounds=environments.PIPENV_MAX_ROUNDS)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/resolver.py", line 180, in resolve
    has_changed, best_matches = self._resolve_one_round()
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/resolver.py", line 268, in _resolve_one_round
    their_constraints.extend(self._iter_dependencies(best_match))
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/resolver.py", line 383, in _iter_dependencies
    dependencies = self.repository.get_dependencies(ireq)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 226, in get_dependencies
    legacy_results = self.get_legacy_dependencies(ireq)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 347, in get_legacy_dependencies
    results, ireq = self.resolve_reqs(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 303, in resolve_reqs
    results = resolver._resolve_one(reqset, ireq)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/legacy_resolve.py", line 339, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/legacy_resolve.py", line 287, in _get_abstract_dist_for
    abstract_dist = self.preparer.prepare_linked_requirement(req)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/operations/prepare.py", line 508, in prepare_linked_requirement
    abstract_dist = _get_prepared_distribution(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/operations/prepare.py", line 95, in _get_prepared_distribution
    abstract_dist.prepare_distribution_metadata(finder, build_isolation)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/distributions/sdist.py", line 40, in prepare_distribution_metadata
    self.req.prepare_metadata()
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/req/req_install.py", line 564, in prepare_metadata
    self.metadata_directory = self._generate_metadata()
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/req/req_install.py", line 549, in _generate_metadata
    return generate_metadata(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/operations/build/metadata.py", line 36, in generate_metadata
    distinfo_dir = backend.prepare_metadata_for_build_wheel(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/wrappers.py", line 167, in prepare_metadata_for_build_wheel
    return self._call_hook('prepare_metadata_for_build_wheel', {
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/wrappers.py", line 245, in _call_hook
    self._subprocess_runner(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/utils/subprocess.py", line 271, in runner
    call_subprocess(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/utils/subprocess.py", line 242, in call_subprocess
    raise InstallationError(exc_msg)
pipenv.patched.notpip._internal.exceptions.InstallationError: Command errored out with exit status 1: /Users/alex/.local/share/virtualenvs/foo-mzLZXOua/bin/python /usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /var/folders/my/1cvd396x2m35py37s4lfhjv80000gp/T/tmp7_75fjjs Check the logs for full command output.
ROUND 1                           
Current constraints:
  ddtrace[profiling]==0.36.1 (from -r /var/folders/my/1cvd396x2m35py37s4lfhjv80000gp/T/pipenvsa2yqfuyrequirements/pipenv-qgladdka-constraints.txt (line 2))

Finding the best candidates:
  found candidate ddtrace[profiling]==0.36.1 (constraint was ==0.36.1)

Finding secondary dependencies:
  ddtrace[profiling]==0.36.1 not in cache, need to check index
ERROR:pip.subprocessor:Command errored out with exit status 1:
 command: /Users/alex/.local/share/virtualenvs/foo-mzLZXOua/bin/python /usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /var/folders/my/1cvd396x2m35py37s4lfhjv80000gp/T/tmp7_75fjjs
     cwd: /private/var/folders/my/1cvd396x2m35py37s4lfhjv80000gp/T/pip-resolver-uciotq_i/ddtrace
Complete output (14 lines):
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py", line 257, in <module>
    main()
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py", line 240, in main
    json_out['return_val'] = hook(**hook_input['kwargs'])
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py", line 110, in prepare_metadata_for_build_wheel
    return hook(metadata_directory, config_settings)
  File "/Users/alex/.local/share/virtualenvs/foo-mzLZXOua/lib/python3.8/site-packages/setuptools/build_meta.py", line 158, in prepare_metadata_for_build_wheel
    self.run_setup()
  File "/Users/alex/.local/share/virtualenvs/foo-mzLZXOua/lib/python3.8/site-packages/setuptools/build_meta.py", line 143, in run_setup
    exec(compile(code, __file__, 'exec'), locals())
  File "setup.py", line 9, in <module>
    from Cython.Build import cythonize  # noqa: I100
ModuleNotFoundError: No module named 'Cython'
----------------------------------------
Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 807, in <module>
    main()
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 802, in main
    _main(parsed.pre, parsed.clear, parsed.verbose, parsed.system, parsed.write,
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 785, in _main
    resolve_packages(pre, clear, verbose, system, write, requirements_dir, packages)
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 746, in resolve_packages
    results, resolver = resolve(
  File "/usr/local/lib/python3.8/site-packages/pipenv/resolver.py", line 728, in resolve
    return resolve_deps(
  File "/usr/local/lib/python3.8/site-packages/pipenv/utils.py", line 1371, in resolve_deps
    results, hashes, markers_lookup, resolver, skipped = actually_resolve_deps(
  File "/usr/local/lib/python3.8/site-packages/pipenv/utils.py", line 1086, in actually_resolve_deps
    resolver.resolve()
  File "/usr/local/lib/python3.8/site-packages/pipenv/utils.py", line 807, in resolve
    results = self.resolver.resolve(max_rounds=environments.PIPENV_MAX_ROUNDS)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/resolver.py", line 180, in resolve
    has_changed, best_matches = self._resolve_one_round()
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/resolver.py", line 268, in _resolve_one_round
    their_constraints.extend(self._iter_dependencies(best_match))
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/resolver.py", line 383, in _iter_dependencies
    dependencies = self.repository.get_dependencies(ireq)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 226, in get_dependencies
    legacy_results = self.get_legacy_dependencies(ireq)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 347, in get_legacy_dependencies
    results, ireq = self.resolve_reqs(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/piptools/repositories/pypi.py", line 303, in resolve_reqs
    results = resolver._resolve_one(reqset, ireq)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/legacy_resolve.py", line 339, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/legacy_resolve.py", line 287, in _get_abstract_dist_for
    abstract_dist = self.preparer.prepare_linked_requirement(req)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/operations/prepare.py", line 508, in prepare_linked_requirement
    abstract_dist = _get_prepared_distribution(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/operations/prepare.py", line 95, in _get_prepared_distribution
    abstract_dist.prepare_distribution_metadata(finder, build_isolation)
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/distributions/sdist.py", line 40, in prepare_distribution_metadata
    self.req.prepare_metadata()
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/req/req_install.py", line 564, in prepare_metadata
    self.metadata_directory = self._generate_metadata()
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/req/req_install.py", line 549, in _generate_metadata
    return generate_metadata(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/operations/build/metadata.py", line 36, in generate_metadata
    distinfo_dir = backend.prepare_metadata_for_build_wheel(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/wrappers.py", line 167, in prepare_metadata_for_build_wheel
    return self._call_hook('prepare_metadata_for_build_wheel', {
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/wrappers.py", line 245, in _call_hook
    self._subprocess_runner(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/utils/subprocess.py", line 271, in runner
    call_subprocess(
  File "/usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_internal/utils/subprocess.py", line 242, in call_subprocess
    raise InstallationError(exc_msg)
pipenv.patched.notpip._internal.exceptions.InstallationError: Command errored out with exit status 1: /Users/alex/.local/share/virtualenvs/foo-mzLZXOua/bin/python /usr/local/lib/python3.8/site-packages/pipenv/patched/notpip/_vendor/pep517/_in_process.py prepare_metadata_for_build_wheel /var/folders/my/1cvd396x2m35py37s4lfhjv80000gp/T/tmp7_75fjjs Check the logs for full command output.

Steps to replicate

See Pipfile above and lock command run

$ pipenv --support

Pipenv version: '2020.4.1b1'

Pipenv location: '/usr/local/lib/python3.8/site-packages/pipenv'

Python location: '/usr/local/opt/python@3.8/bin/python3.8'

Python installations found:

  • 3.8.2: /usr/local/opt/python@3.8/bin/python3
  • 3.8.2: /usr/local/opt/python@3.8/bin/python3.8
  • 3.8.0: /usr/local/bin/python3.8
  • 3.7.3: /usr/bin/python3
  • 3.7.0: /usr/local/bin/python3
  • 3.7.0: /usr/local/bin/python3.7m
  • 3.7.0: /usr/local/bin/python3.7
  • 3.6.7: /usr/local/bin/python3.6
  • 3.6.7: /usr/local/bin/python3.6m
  • 3.5.9: /Users/alex/.pyenv/versions/3.5.9/bin/python3
  • 2.7.16: /usr/bin/python2
  • 2.7.16: /usr/bin/python2.7
  • 2.7.15: /usr/local/bin/python2
  • 2.7.15: /usr/local/bin/python2.7

PEP 508 Information:

{'implementation_name': 'cpython',
 'implementation_version': '3.8.2',
 'os_name': 'posix',
 'platform_machine': 'x86_64',
 'platform_python_implementation': 'CPython',
 'platform_release': '19.4.0',
 'platform_system': 'Darwin',
 'platform_version': 'Darwin Kernel Version 19.4.0: Wed Mar  4 22:28:40 PST '
                     '2020; root:xnu-6153.101.6~15/RELEASE_X86_64',
 'python_full_version': '3.8.2',
 'python_version': '3.8',
 'sys_platform': 'darwin'}

System environment variables:

  • SHELL
  • XPC_FLAGS
  • HISTCONTROL
  • TERM_PROGRAM_VERSION
  • PKG_CONFIG_PATH
  • HISTSIZE
  • HDF5_DIR
  • SSH_AUTH_SOCK
  • TERM_SESSION_ID
  • GPG_TTY
  • serverFlavor
  • PWD
  • LOGNAME
  • MANPATH
  • LaunchInstanceID
  • HOME
  • LANG
  • SECURITYSESSIONID
  • TMPDIR
  • CLICOLOR
  • FBNSECRETS_FORCE_USER
  • OPENSC_LIBS
  • NVM_DIR
  • TERM
  • USER
  • DISPLAY
  • SHLVL
  • XPC_SERVICE_NAME
  • HOMEBREW_GITHUB_API_TOKEN
  • PS1
  • PATH
  • OLDPWD
  • GOPATH
  • TERM_PROGRAM
  • _
  • __CF_USER_TEXT_ENCODING
  • PIP_DISABLE_PIP_VERSION_CHECK
  • PYTHONDONTWRITEBYTECODE
  • PIP_SHIMS_BASE_MODULE
  • PIP_PYTHON_PATH
  • PYTHONFINDER_IGNORE_UNSUPPORTED

Pipenv–specific environment variables:

Debug–specific environment variables:

  • PATH: ~/.local/bin:/usr/local/opt/python@3.8/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin:/Library/Apple/usr/bin:/Users/alex/bin:/usr/local/opt/go/libexec/bin:/Users/alex/gowork/bin:/Applications/Postgres.app/Contents/Versions/9.6/bin:/usr/local/bin:/usr/local/sbin:/Users/alex/Downloads/google-cloud-sdk/bin:/Users/alex/dev/fbn.com/ops/docker/ecr/bin
  • SHELL: /usr/local/bin/bash
  • LANG: en_US.UTF-8
  • PWD: /tmp/foo

Contents of Pipfile (‘/private/tmp/foo/Pipfile’):

[[source]]
name = "pypi"
url = "https://pypi.fbn.org/simple"
verify_ssl = true

[packages]
ddtrace = {extras = ["profiling"], version = "==0.36.1" }

[requires]
python_version = "3.8"

Issue Analytics

  • State:closed
  • Created 3 years ago
  • Reactions:1
  • Comments:19 (11 by maintainers)

github_iconTop GitHub Comments

5reactions
techalchemycommented, May 9, 2020

Hey so I have a more thorough grasp of this issue now and there are actually two separate issues in play which led me down a few confusing paths before sorting this out.

Firstly, the issue with lazy-object-proxy – the package in question has a setup.py which takes advantage of setuptools-scm (other issues may come up with regard to this because it probably doesn’t work properly when resolving sdists either), as well as having a pyproject.toml with build-system.requires defined, but no build-system.build-backend.

In our resolution step, pip was attempting to set the build-system.build-backend to setuptools.build_meta:__legacy__ which, if you’ve had your virtualenv around and never updated setuptools, might not exist. This normally doesn’t matter, since pip uses its own internal pep517 build backend and builds in an isolate build environment.

In the case of ddtrace, there is also a pyproject.toml file, which, in this case, includes a sufficiently unconstrained build-system.requires and explicitly sets build-system.build-backend to setuptools.build_meta. In setup.py, however, it imports Cython, one of its build-system.requires items. In another issue I speculated that we might fix our dependency resolution challenges if we enabled build isolation during dependency resolution.

Following up on that, I discovered that when we are determining whether to build in isolation or use pep517, we are doing this a bit…wrong.

In this first bit of resolver code, you can see that we were relying on truthy values of use_pep517 and build_isolation rather than the more strong is False comparison – i.e., if is_pep517 is None, we would still decide to pass --no-use-pep517 to pip.

-    def prepare_pip_args(self, use_pep517=True, build_isolation=True):
+    def prepare_pip_args(self, use_pep517=False, build_isolation=True):
         pip_args = []
         if self.sources:
             pip_args = prepare_pip_source_args(self.sources, pip_args)
-        if not use_pep517:
+        if use_pep517 is False:
             pip_args.append("--no-use-pep517")
-        if not build_isolation:
+        if build_isolation is False:
             pip_args.append("--no-build-isolation")
         pip_args.extend(["--cache-dir", environments.PIPENV_CACHE_DIR])
         return pip_args

And here where we decide what actually gets passed in, we were doing some overly complicated logical expressions which wind up evaluating in an undesirable way. To break the issue down: use_pep517 = False if (condition1) else (True if condition2 else None). So, even if this accurately evaluated to None, we still read that as --no-<x>.

     @property
     def pip_args(self):
-        use_pep517 = False if (
-            os.environ.get("PIP_NO_USE_PEP517", None) is not None
-        ) else (True if os.environ.get("PIP_USE_PEP517", None) is not None else None)
-        build_isolation = False if (
-            os.environ.get("PIP_NO_BUILD_ISOLATION", None) is not None
-        ) else (True if os.environ.get("PIP_BUILD_ISOLATION", None) is not None else None)
+        use_pep517 = environments.get_from_env("USE_PEP517", prefix="PIP")
+        build_isolation = environments.get_from_env("BUILD_ISOLATION", prefix="PIP")
         if self._pip_args is None:
             self._pip_args = self.prepare_pip_args(
                 use_pep517=use_pep517, build_isolation=build_isolation

As a result I’ve provided a more general function for reading these types of values from the environment in the linked PR and a way to build in isolation by default. I’m a little bit unsure about whether this might break certain workflows so I want to consider whether we need any additional fallbacks for those cases.

That said, thanks for providing the detail required to troubleshoot this one, it was definitely tricky!

2reactions
techalchemycommented, May 8, 2020

As my final note for the evening I am able to reproduce this by creating a virtualenv with an old version of setuptools (I initially tried <41.0 but that seemed to work ok, while the implicated version 40.2.0 seems to be completely broken for these packages). I have just wrapped up some changes that will implement the functionality I described above, i.e. upgrading setuptools if pipenv bumps into this bug and re-resolving.

After looking over my own libraries I’ve realized that where I handle resolution of packages with no backend specified and no build requirements, I begin by forcing setuptools>=40.8 so I assume this is the version where the __legacy__ backend was added.

Tomorrow morning I will throw together a fake package with a setuptools.build_meta:__legacy__ backend and a quick test. If anyone foresees any issues with this approach, please raise them

Read more comments on GitHub >

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v2020.4.1b1: Released sources don't contain necessary test data

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`make test` on master fails - error while installing pyenchant==2.0.0