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pyenv-exec: no -a with exec to keep $PATH with system version (#1169)

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Using `exec -a` caused Python to use $PATH to look up the full program name (for
`sys.executable`), which 314937d then tried to fix by changing $PATH
also for the system version.
This is not necessary anymore when not using the short name with `exec`.

This was rejected upstream
(https://github.com/rbenv/rbenv/pull/1089#issuecomment-394531896), since
it is not a problem with Ruby apparently.

Uses $PYENV_ROOT to check if system version is used.

Fixes https://github.com/pyenv/pyenv/issues/98.
Fixes https://github.com/pyenv/pyenv/issues/789.
This commit is contained in:
Daniel Hahler 2019-09-29 00:03:44 +02:00 committed by GitHub
parent 31b7e1c390
commit ecd67c8223
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2 changed files with 41 additions and 4 deletions
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9
libexec/pyenv-exec
View file

@ -41,7 +41,8 @@ for script in "${scripts[@]}"; do
done
shift 1
# CPython's `sys.executable` requires the `PYENV_BIN_PATH` to be at the top of the `PATH`.
# https://github.com/pyenv/pyenv/issues/98
export PATH="${PYENV_BIN_PATH}:${PATH}"
exec -a "$PYENV_COMMAND" "$PYENV_COMMAND_PATH" "$@"
if [ "${PYENV_BIN_PATH#${PYENV_ROOT}}" != "${PYENV_BIN_PATH}" ]; then
# Only add to $PATH for non-system version.
export PATH="${PYENV_BIN_PATH}:${PATH}"
fi
exec "$PYENV_COMMAND_PATH" "$@"

36
test/exec.bats
View file

@ -77,3 +77,39 @@ ${PYENV_ROOT}/versions/3.4/bin/python
args
OUT
}
@test "sys.executable with system version (#98)" {
system_python=$(which python)
PYENV_VERSION="custom"
create_executable "python" ""
unset PYENV_VERSION
pyenv-rehash
run pyenv-exec python -c 'import sys; print(sys.executable)'
assert_success "${system_python}"
}
@test '$PATH is not modified with system Python' {
# Create a wrapper executable that verifies PATH.
PYENV_VERSION="custom"
create_executable "python" '[[ "$PATH" == "${PYENV_TEST_DIR}/root/versions/custom/bin:"* ]] || { echo "unexpected:$PATH"; exit 2;}'
unset PYENV_VERSION
pyenv-rehash
# Path is not modified with system Python.
run pyenv-exec python -c 'import os; print(os.getenv("PATH"))'
assert_success "$PATH"
# Path is modified with custom Python.
PYENV_VERSION=custom run pyenv-exec python
assert_success
# Path is modified with custom:system Python.
PYENV_VERSION=custom:system run pyenv-exec python
assert_success
# Path is not modified with system:custom Python.
PYENV_VERSION=system:custom run pyenv-exec python -c 'import os; print(os.getenv("PATH"))'
assert_success "$PATH"
}