try:
    from conda_build.license_family import allowed_license_families as LICENSE_FAMILIES
except ImportError:
    print("warning: could not import conda-build ALLOWED_LICENSE_FAMILIES data.  Falling back to "
          "possibly stale static list")
    LICENSE_FAMILIES = ['AGPL', 'GPL2', 'GPL3', 'LGPL', 'BSD', 'MIT', 'Apache',
                        'PSF', 'Public-Domain', 'Proprietary', 'Other']

try:
    from conda_build.metadata import FIELDS
except ImportError:
    print("warning: could not import conda-build FIELDS data.  Falling back to possibly stale"
          "static list")
    FIELDS = {
        'package': {'name', 'version'},
        'source': {'fn', 'url', 'md5', 'sha1', 'sha256',
                'git_url', 'git_tag', 'git_branch', 'git_rev',
                'patches', 'hg_url', 'hg_tag', 'path'},
        'build': {'features', 'track_features', 'skip',
                'number', 'entry_points', 'osx_is_app', 'noarch',
                'preserve_egg_dir', 'win_has_prefix', 'no_link',
                'ignore_prefix_files', 'msvc_compiler', 'skip_compile_pyc',
                'detect_binary_files_with_prefix', 'script',
                'always_include_files', 'binary_relocation',
                'binary_has_prefix_files', 'noarch_python', 'run_exports'},
        'requirements': {'build', 'run', 'preferred_env', 'host',
                        'preferred_env_executable_paths'},
        'outputs': {'name', 'build', 'about', 'test', 'version', 'script', 'requirements',
                    'run_exports'},
        'app': {'entry', 'icon', 'summary', 'type', 'cli_opts'},
        'test': {'requires', 'commands', 'files', 'source_files', 'imports'},
        'about': {'license', 'license_url', 'license_family', 'license_file',
                'summary', 'description', 'home', 'doc_url', 'doc_source_url',
                'dev_url'},
        'extra': {'recipe-maintainers', 'final', 'parent_recipe'},
    }

MAGIC_HEADERS = {
    b'\xca\xfe\xba\xbe': 'MachO-universal',
    b'\xce\xfa\xed\xfe': 'MachO-i386',
    b'\xcf\xfa\xed\xfe': 'MachO-x86_64',
    b'\xfe\xed\xfa\xce': 'MachO-ppc',
    b'\xfe\xed\xfa\xcf': 'MachO-ppc64',
    b'MZ\x90\x00': 'DLL',
    b'\x7fELF': 'ELF',
}

DLL_TYPES = {
    0x0: 'UNKNOWN', 0x1d3: 'AM33', 0x8664: 'AMD64', 0x1c0: 'ARM',
    0xebc: 'EBC', 0x14c: 'I386', 0x200: 'IA64', 0x9041: 'M32R',
    0x266: 'MIPS16', 0x366: 'MIPSFPU', 0x466: 'MIPSFPU16', 0x1f0: 'POWERPC',
    0x1f1: 'POWERPCFP', 0x166: 'R4000', 0x1a2: 'SH3', 0x1a3: 'SH3DSP',
    0x1a6: 'SH4', 0x1a8: 'SH5', 0x1c2: 'THUMB', 0x169: 'WCEMIPSV2',
}

CONDA_FORGE_COMMENTS = """
# Note: there are many handy hints in comments in this example -- remove them when you've finalized your recipe
# Jinja variables help maintain the recipe as you'll update the version only here.
# sha256 is the prefered checksum -- you can get it for a file with:
#  `openssl sha256 <file name>`.
# You may need the openssl package, available on conda-forge
#  `conda install openssl -c conda-forge``
# If the installation is complex, or different between Unix and Windows, use separate bld.bat and build.sh files instead of this key.
# By default, the package will be built for the Python versions supported by conda-forge and for all major OSs.
# Add the line "skip: True  # [py<35]" (for example) to limit to Python 3.5 and newer, or "skip: True  # [not win]" to limit to Windows.
# When setuptools is available add the `--single-version-externally-managed --record record.txt` above.
# if your project compiles code (such as a C extension) then add `toolchain` as a build requirement.
# Some package might need a `test/commands` key to check CLI.
# List all the packages/modules that `run_test.py` imports.
# Remember to specify the license variants for BSD, Apache, GPL, and LGLP.
# Prefer the short version, e.g: GPL-2.0 instead of GNU General Public License version 2.0
# See https://opensource.org/licenses/alphabetical
# The license_family, i.e. "BSD" if license is "BSD-3-Clause". (optional)
# It is strongly encouraged to include a license file in the package,
# (even if the license doesn't require it) using the license_file entry.
# See http://conda.pydata.org/docs/building/meta-yaml.html#license-file
# The remaining entries in this section are optional, but recommended
# GitHub IDs for maintainers of the recipe.
# Always check with the people listed below if they are OK becoming maintainers of the recipe. (There will be spam!)
"""