On 11/08/24 06:27, Eric Altendorf wrote:
This is mentioned on another thread, but I'm raising it again here with
a report from a hermetic environment.
To reproduce the failure:
mkdir beancount-install-test
cd beancount-install-test/
git clone https://github.com/beancount/beancount
<https://github.com/beancount/beancount>
python -m venv beancount-venv
source beancount-venv/bin/activate
cd beancount
python -m pip install -e .
python -m pip install pytest
make test
produces a bunch of ninja temp file errors
This is because the meson-python editable wheel support re-compiles the
project when it is imported. This requires all the build tools for the
project to be installed in the Python environment. However, by default,
pip created a throw-away environment for building the wheel where the
build tools are installed. The throw-away environment is deleted as soon
as the editable wheel is installed, and the build tools with it. This is
the reason why the meson-python documentation on editable wheels
https://mesonbuild.com/meson-python/how-to-guides/editable-installs.html
recommends to switch off this feature passing the --no-build-isolation
command line option to pip. This requires to install the build tools
required by the project, in the case of beancount this is meson-python,
meson, and ninja.
I also tried:
python -m pip install ninja
but I get the same failures after that.
The failure you get after that is similar, but not the same. These
failures are due to the unusual way pytest uses to import the test code.
The last pytest major release does not work with a project that has the
test modules located alongside the source code but not installed in the
wheel. The only solution I've found for this is to install the test
modules. I'll prepare a PR to do this for beancount too.
Cheers,
Dan
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