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Add deprecation warning for python <3.6 in x.py

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Soft deprecate old python versions to give users a warning that
eventually it may not be supported.
This commit is contained in:
Trevor Gross 2023-06-09 23:55:26 -04:00
parent 397641f3bd
commit cec95d74dd
1 changed files with 19 additions and 1 deletions
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20
x.py
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@ -9,12 +9,17 @@
if __name__ == '__main__': if __name__ == '__main__':
import os import os
import sys import sys
import warnings
from inspect import cleandoc
major = sys.version_info.major
minor = sys.version_info.minor
# If this is python2, check if python3 is available and re-execute with that # If this is python2, check if python3 is available and re-execute with that
# interpreter. Only python3 allows downloading CI LLVM. # interpreter. Only python3 allows downloading CI LLVM.
# #
# This matters if someone's system `python` is python2. # This matters if someone's system `python` is python2.
if sys.version_info.major < 3: if major < 3:
try: try:
os.execvp("py", ["py", "-3"] + sys.argv) os.execvp("py", ["py", "-3"] + sys.argv)
except OSError: except OSError:
@ -24,6 +29,19 @@ if __name__ == '__main__':
# Python 3 isn't available, fall back to python 2 # Python 3 isn't available, fall back to python 2
pass pass
# soft deprecation of old python versions
skip_check = os.environ.get("RUST_IGNORE_OLD_PYTHON") == "1"
if major < 3 or (major == 3 and minor < 6):
msg = cleandoc("""
Using python {}.{} but >= 3.6 is recommended. Your python version
should continue to work for the near future, but this will
eventually change. If python >= 3.6 is not available on your system,
please file an issue to help us understand timelines.
This message can be suppressed by setting `RUST_IGNORE_OLD_PYTHON=1`
""".format(major, minor))
warnings.warn(msg)
rust_dir = os.path.dirname(os.path.abspath(__file__)) rust_dir = os.path.dirname(os.path.abspath(__file__))
# For the import below, have Python search in src/bootstrap first. # For the import below, have Python search in src/bootstrap first.
sys.path.insert(0, os.path.join(rust_dir, "src", "bootstrap")) sys.path.insert(0, os.path.join(rust_dir, "src", "bootstrap"))