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Copy pathx
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executable file
·55 lines (47 loc) · 1.65 KB
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#!/bin/sh
# Modern Linux and macOS systems commonly only have a thing called `python3` and
# not `python`, while Windows commonly does not have `python3`, so we cannot
# directly use python in the x.py shebang and have it consistently work. Instead we
# have a shell script to look for a python to run x.py.
set -eu
# syntax check
sh -n "$0"
realpath() {
local path="$1"
if [ -L "$path" ]; then
readlink -f "$path"
elif [ -d "$path" ]; then
# "cd" is not always silent (e.g. when CDPATH is set), so discard its output.
(cd -P "$path" >/dev/null && pwd)
else
echo "$(realpath "$(dirname "$path")")/$(basename "$path")"
fi
}
xpy=$(dirname "$(realpath "$0")")/x.py
# On Windows, `py -3` sometimes works. We need to try it first because `python3`
# sometimes tries to launch the app store on Windows.
# On MacOS, `py` tries to install "Developer command line tools". Try `python3` first.
# NOTE: running `bash -c ./x` from Windows doesn't set OSTYPE.
case ${OSTYPE:-} in
cygwin*|msys*) SEARCH="py python3 python python2 uv";;
*) SEARCH="python3 python py python2 uv";;
esac
for SEARCH_PYTHON in $SEARCH; do
if python=$(command -v $SEARCH_PYTHON) && [ -x "$python" ]; then
case $SEARCH_PYTHON in
py)
extra_arg="-3";;
uv)
extra_arg="run";;
*)
extra_arg="";;
esac
exec "$python" $extra_arg "$xpy" "$@"
fi
done
python=$(bash -c "compgen -c python" | grep '^python[2-3]\.[0-9]+$' | head -n1)
if ! [ "$python" = "" ]; then
exec "$python" "$xpy" "$@"
fi
echo "$0: error: did not find python installed" >&2
exit 1