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[RFC PATCH v2 03/10] mkvenv: Add better error message for missing pyexap
From: |
John Snow |
Subject: |
[RFC PATCH v2 03/10] mkvenv: Add better error message for missing pyexapt module |
Date: |
Fri, 14 Apr 2023 01:54:42 -0400 |
NetBSD debundles pyexpat from python, but ensurepip needs pyexpat. Try
our best to offer a helpful error message instead of just failing
catastrophically.
Signed-off-by: John Snow <jsnow@redhat.com>
---
python/scripts/mkvenv.py | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)
diff --git a/python/scripts/mkvenv.py b/python/scripts/mkvenv.py
index 6df95382f3..a3284e9ef1 100644
--- a/python/scripts/mkvenv.py
+++ b/python/scripts/mkvenv.py
@@ -98,7 +98,10 @@ def check_ensurepip(with_pip: bool) -> None:
Raise a fatal exception with a helpful hint if it isn't available.
"""
- if with_pip and not find_spec("ensurepip"):
+ if not with_pip:
+ return
+
+ if not find_spec("ensurepip"):
msg = ("Python's ensurepip module is not found.\n"
"It's normally part of the Python standard library, "
@@ -111,6 +114,20 @@ def check_ensurepip(with_pip: bool) -> None:
"(Hint: Debian puts ensurepip in its python3-venv package.)")
raise Ouch(msg)
+ # ensurepip uses pyexpat, which can also go missing on us:
+ if not find_spec("pyexpat"):
+ msg = ("Python's pyexpat module is not found.\n"
+
+ "It's normally part of the Python standard library, "
+ "maybe your distribution packages it separately?\n"
+
+ "Either install pyexpat, or alleviate the need for it in the "
+ "first place by installing pip and setuptools for "
+ f"'{sys.executable}'.\n\n"
+
+ "(Hint: NetBSD's pkgsrc debundles this to e.g. 'py310-expat'.)")
+ raise Ouch(msg)
+
def make_venv( # pylint: disable=too-many-arguments
venv_path: Union[str, Path],
--
2.39.2
- [RFC PATCH v2 00/10] configure: create a python venv and install meson, John Snow, 2023/04/14
- [RFC PATCH v2 01/10] python: add mkvenv.py, John Snow, 2023/04/14
- [RFC PATCH v2 05/10] tests/vm: add py310-expat to NetBSD, John Snow, 2023/04/14
- [RFC PATCH v2 02/10] tests: add python3-venv dependency, John Snow, 2023/04/14
- [RFC PATCH v2 08/10] configure: create a python venv unconditionally, John Snow, 2023/04/14
- [RFC PATCH v2 03/10] mkvenv: Add better error message for missing pyexapt module,
John Snow <=
- [RFC PATCH v2 06/10] mkvenv: generate console entry shims from inside the venv, John Snow, 2023/04/14
- [RFC PATCH v2 07/10] mkvenv: work around broken pip installations on Debian 10, John Snow, 2023/04/14
- [RFC PATCH v2 04/10] tests/vm: Configure netbsd to use Python 3.10, John Snow, 2023/04/14
- [RFC PATCH v2 09/10] configure: remove --meson=; install meson to the pyvenv, John Snow, 2023/04/14
- [RFC PATCH v2 10/10] tests: Use configure-provided pyvenv for tests, John Snow, 2023/04/14