5a771bc8ad
The SPACK_PYTHON environment variable can be set to a python interpreter to be used by the spack command. This allows the spack command itself to use a consistent and separate interpreter from whatever python might be used for package building.
71 lines
2.4 KiB
Python
Executable file
71 lines
2.4 KiB
Python
Executable file
#!/bin/sh
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# -*- python -*-
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#
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# Copyright 2013-2021 Lawrence Livermore National Security, LLC and other
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# Spack Project Developers. See the top-level COPYRIGHT file for details.
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#
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# SPDX-License-Identifier: (Apache-2.0 OR MIT)
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# This file is bilingual. The following shell code finds our preferred python.
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# Following line is a shell no-op, and starts a multi-line Python comment.
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# See https://stackoverflow.com/a/47886254
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""":"
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# prefer SPACK_PYTHON environment variable, python3, python, then python2
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for cmd in "${SPACK_PYTHON:-}" python3 python python2; do
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if command -v > /dev/null "$cmd"; then
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export SPACK_PYTHON="$(command -v "$cmd")"
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exec "${SPACK_PYTHON}" "$0" "$@"
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fi
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done
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echo "==> Error: spack could not find a python interpreter!" >&2
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exit 1
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":"""
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# Line above is a shell no-op, and ends a python multi-line comment.
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# The code above runs this file with our preferred python interpreter.
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from __future__ import print_function
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import os
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import sys
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if sys.version_info[:2] < (2, 6):
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v_info = sys.version_info[:3]
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sys.exit("Spack requires Python 2.6 or higher."
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"This is Python %d.%d.%d." % v_info)
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# Find spack's location and its prefix.
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spack_file = os.path.realpath(os.path.expanduser(__file__))
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spack_prefix = os.path.dirname(os.path.dirname(spack_file))
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# Allow spack libs to be imported in our scripts
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spack_lib_path = os.path.join(spack_prefix, "lib", "spack")
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sys.path.insert(0, spack_lib_path)
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# Add external libs
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spack_external_libs = os.path.join(spack_lib_path, "external")
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if sys.version_info[:2] <= (2, 7):
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sys.path.insert(0, os.path.join(spack_external_libs, 'py2'))
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if sys.version_info[:2] == (2, 6):
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sys.path.insert(0, os.path.join(spack_external_libs, 'py26'))
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sys.path.insert(0, spack_external_libs)
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# Here we delete ruamel.yaml in case it has been already imported from site
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# (see #9206 for a broader description of the issue).
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#
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# Briefly: ruamel.yaml produces a .pth file when installed with pip that
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# makes the site installed package the preferred one, even though sys.path
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# is modified to point to another version of ruamel.yaml.
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if 'ruamel.yaml' in sys.modules:
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del sys.modules['ruamel.yaml']
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if 'ruamel' in sys.modules:
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del sys.modules['ruamel']
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import spack.main # noqa
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# Once we've set up the system path, run the spack main method
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if __name__ == "__main__":
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sys.exit(spack.main.main())
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