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notify and error out on more unsupported versions (#22389)

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This is to help debug situations like #22383, where python3.4 is
accidentally preferred over python2.  It will also help on systems where
there is no python2 available or some other issue.
This commit is contained in:
Tom Scogland 2021-03-20 08:01:23 -07:00 committed by GitHub
parent 86fad97165
commit 48023b2932
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GPG key ID: 4AEE18F83AFDEB23
1 changed files with 14 additions and 9 deletions
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23
bin/spack
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@ -29,10 +29,15 @@ from __future__ import print_function
import os
import sys
if sys.version_info[:2] < (2, 6):
min_python3 = (3, 5)
if sys.version_info[:2] < (2, 6) or (
sys.version_info[:2] >= (3, 0) and sys.version_info[:2] < min_python3
):
v_info = sys.version_info[:3]
sys.exit("Spack requires Python 2.6 or higher."
"This is Python %d.%d.%d." % v_info)
msg = "Spack requires Python 2.6, 2.7 or %d.%d or higher " % min_python3
msg += "You are running spack with Python %d.%d.%d." % v_info
sys.exit(msg)
# Find spack's location and its prefix.
spack_file = os.path.realpath(os.path.expanduser(__file__))
@ -46,9 +51,9 @@ sys.path.insert(0, spack_lib_path)
spack_external_libs = os.path.join(spack_lib_path, "external")
if sys.version_info[:2] <= (2, 7):
sys.path.insert(0, os.path.join(spack_external_libs, 'py2'))
sys.path.insert(0, os.path.join(spack_external_libs, "py2"))
if sys.version_info[:2] == (2, 6):
sys.path.insert(0, os.path.join(spack_external_libs, 'py26'))
sys.path.insert(0, os.path.join(spack_external_libs, "py26"))
sys.path.insert(0, spack_external_libs)
@ -58,11 +63,11 @@ sys.path.insert(0, spack_external_libs)
# Briefly: ruamel.yaml produces a .pth file when installed with pip that
# makes the site installed package the preferred one, even though sys.path
# is modified to point to another version of ruamel.yaml.
if 'ruamel.yaml' in sys.modules:
del sys.modules['ruamel.yaml']
if "ruamel.yaml" in sys.modules:
del sys.modules["ruamel.yaml"]
if 'ruamel' in sys.modules:
del sys.modules['ruamel']
if "ruamel" in sys.modules:
del sys.modules["ruamel"]
import spack.main # noqa