```
==> py-setuptools: Executing phase: 'install'
==> [2022-03-12-10:39:09.181041] '/projects/spack/opt/spack/gcc-8.5.0/python/6z6bbfg/bin/python3.9' '-m' 'pip' '-vvv' '--no-input' '--no-cache-dir' '--disable-pip-version-check' 'install' '--no-deps' '--ignore-installed' '--no-build-isolation' '--no-warn-script-location' '--no-index' '--prefix=/projects/spack/opt/spack/gcc-8.5.0/py-setuptools/26gyn5x' '.'
Using pip 21.3.1 from /projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip (python 3.9)
Non-user install due to --prefix or --target option
Ignoring indexes: https://pypi.org/simple
Created temporary directory: /tmp/pip-ephem-wheel-cache-p5vr3e0t
Created temporary directory: /tmp/pip-req-tracker-iv7wygbd
Initialized build tracking at /tmp/pip-req-tracker-iv7wygbd
Created build tracker: /tmp/pip-req-tracker-iv7wygbd
Entered build tracker: /tmp/pip-req-tracker-iv7wygbd
Created temporary directory: /tmp/pip-install-2zg9v9l0
Processing /tmp/s3j/spack-stage/spack-stage-py-setuptools-59.4.0-26gyn5xre2zssmqsn2qqurxbbooxgssz/spack-src
  Added file:///tmp/s3j/spack-stage/spack-stage-py-setuptools-59.4.0-26gyn5xre2zssmqsn2qqurxbbooxgssz/spack-src to build tracker '/tmp/pip-req-tracker-iv7wygbd'
  Created temporary directory: /tmp/pip-modern-metadata-n1k48pa1
  Preparing metadata (pyproject.toml): started
  Running command /projects/spack/opt/spack/gcc-8.5.0/python/6z6bbfg/bin/python3.9 /projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py prepare_metadata_for_build_wheel /tmp/tmpte_wdk3q
  Preparing metadata (pyproject.toml): finished with status 'done'
ERROR: Exception:
Traceback (most recent call last):
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/cli/base_command.py", line 164, in exc_logging_wrapper
    status = run_func(*args)
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/cli/req_command.py", line 205, in wrapper
    return func(self, options, args)
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/commands/install.py", line 338, in run
    requirement_set = resolver.resolve(
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/resolution/resolvelib/resolver.py", line 73, in resolve
    collected = self.factory.collect_root_requirements(root_reqs)
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/resolution/resolvelib/factory.py", line 468, in collect_root_requirements
    req = self._make_requirement_from_install_req(
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/resolution/resolvelib/factory.py", line 430, in _make_requirement_from_install_req
    cand = self._make_candidate_from_link(
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/resolution/resolvelib/factory.py", line 201, in _make_candidate_from_link
    self._link_candidate_cache[link] = LinkCandidate(
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/resolution/resolvelib/candidates.py", line 281, in __init__
    super().__init__(
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/resolution/resolvelib/candidates.py", line 156, in __init__
    self.dist = self._prepare()
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/resolution/resolvelib/candidates.py", line 225, in _prepare
    dist = self._prepare_distribution()
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/resolution/resolvelib/candidates.py", line 292, in _prepare_distribution
    return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True)
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/operations/prepare.py", line 482, in prepare_linked_requirement
    return self._prepare_linked_requirement(req, parallel_builds)
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/operations/prepare.py", line 546, in _prepare_linked_requirement
    dist = _get_prepared_distribution(
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/operations/prepare.py", line 58, in _get_prepared_distribution
    abstract_dist.prepare_distribution_metadata(finder, build_isolation)
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/distributions/sdist.py", line 49, in prepare_distribution_metadata
    self.req.prepare_metadata()
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/req/req_install.py", line 556, in prepare_metadata
    self.metadata_directory = generate_metadata(
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_internal/operations/build/metadata.py", line 28, in generate_metadata
    distinfo_dir = backend.prepare_metadata_for_build_wheel(metadata_dir)
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_vendor/pep517/wrappers.py", line 188, in prepare_metadata_for_build_wheel
    return self._call_hook('prepare_metadata_for_build_wheel', {
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_vendor/pep517/wrappers.py", line 332, in _call_hook
    raise BackendUnavailable(data.get('traceback', ''))
pip._vendor.pep517.wrappers.BackendUnavailable: Traceback (most recent call last):
  File "/projects/spack/opt/spack/gcc-8.5.0/py-pip/m2bllhv/lib/python3.9/site-packages/pip/_vendor/pep517/in_process/_in_process.py", line 89, in _build_backend
    obj = import_module(mod_path)
  File "/projects/spack/opt/spack/gcc-8.5.0/python/6z6bbfg/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "", line 1030, in _gcd_import
  File "", line 1007, in _find_and_load
  File "", line 972, in _find_and_load_unlocked
  File "", line 228, in _call_with_frames_removed
  File "", line 1030, in _gcd_import
  File "", line 1007, in _find_and_load
  File "", line 986, in _find_and_load_unlocked
  File "", line 680, in _load_unlocked
  File "", line 850, in exec_module
  File "", line 228, in _call_with_frames_removed
  File "/tmp/s3j/spack-stage/spack-stage-py-setuptools-59.4.0-26gyn5xre2zssmqsn2qqurxbbooxgssz/spack-src/setuptools/__init__.py", line 18, in 
    from setuptools.dist import Distribution
  File "/tmp/s3j/spack-stage/spack-stage-py-setuptools-59.4.0-26gyn5xre2zssmqsn2qqurxbbooxgssz/spack-src/setuptools/dist.py", line 38, in 
    from setuptools import windows_support
  File "/tmp/s3j/spack-stage/spack-stage-py-setuptools-59.4.0-26gyn5xre2zssmqsn2qqurxbbooxgssz/spack-src/setuptools/windows_support.py", line 2, in 
    import ctypes
  File "/projects/spack/opt/spack/gcc-8.5.0/python/6z6bbfg/lib/python3.9/ctypes/__init__.py", line 8, in 
    from _ctypes import Union, Structure, Array
ModuleNotFoundError: No module named '_ctypes'

*** WARNING: renaming "_ctypes" since importing it failed: build/lib.linux-x86_64-3.9/_ctypes.cpython-39-x86_64-linux-gnu.so: undefined symbol: ffi_prep_cif
Python build finished successfully!

The necessary bits to build these optional modules were not found:

_bz2                  _curses               _curses_panel

_lzma                 _sqlite3              _tkinter

readline

To find the necessary bits, look in setup.py in detect_modules() for the module's name.
The following modules found by detect_modules() in setup.py, have been

built by the Makefile instead, as configured by the Setup files:

_abc                  atexit                pwd

time
Following modules built successfully but were removed because they could not be imported:

_ctypes