pplpy compilation fails with cp: cannot stat 'build/html/*': No such file or directory

[gh-tobiasdiez]

When running make build on Ubuntu 20.10 in WSL 1.0, the post-install script of pplpy fails with the following error:

[pplpy-0.8.6] Successfully installed pplpy-0.8.6
[pplpy-0.8.6] Removed build tracker: '/tmp/pip-req-tracker-790w7b77'
[pplpy-0.8.6]
[pplpy-0.8.6] real      0m43.499s
[pplpy-0.8.6] user      0m35.531s
[pplpy-0.8.6] sys       0m7.406s
[pplpy-0.8.6] Copying package files from temporary location /mnt/d/Programming/sage/local/var/tmp/sage/build/pplpy-0.8.6/inst to /mnt/d/Programming/sage/local
[pplpy-0.8.6] Running post-install script for pplpy-0.8.6.
[pplpy-0.8.6] Traceback (most recent call last):
[pplpy-0.8.6]   File "/mnt/d/Programming/sage/local/bin/sphinx-build", line 5, in <module>
[pplpy-0.8.6]     from sphinx.cmd.build import main
[pplpy-0.8.6]   File "/mnt/d/Programming/sage/local/lib/python3.8/site-packages/sphinx/cmd/build.py", line 25, in <module>
[pplpy-0.8.6]     from sphinx.application import Sphinx
[pplpy-0.8.6]   File "/mnt/d/Programming/sage/local/lib/python3.8/site-packages/sphinx/application.py", line 31, in <module>
[pplpy-0.8.6]     from sphinx.config import Config
[pplpy-0.8.6]   File "/mnt/d/Programming/sage/local/lib/python3.8/site-packages/sphinx/config.py", line 28, in <module>
[pplpy-0.8.6]     from sphinx.util.tags import Tags
[pplpy-0.8.6]   File "/mnt/d/Programming/sage/local/lib/python3.8/site-packages/sphinx/util/tags.py", line 11, in <module>
[pplpy-0.8.6]     from jinja2 import nodes
[pplpy-0.8.6]   File "/mnt/d/Programming/sage/local/lib/python3.8/site-packages/jinja2/__init__.py", line 6, in <module>[pplpy-0.8.6]     from markupsafe import escape
[pplpy-0.8.6] ValueError: source code string cannot contain null bytes
[pplpy-0.8.6] make[5]: *** [Makefile:21: html] Error 1
[pplpy-0.8.6] cp: cannot stat 'build/html/*': No such file or directory
[pplpy-0.8.6]
[pplpy-0.8.6] real      0m0.203s
[pplpy-0.8.6] user      0m0.047s
[pplpy-0.8.6] sys       0m0.141s
[pplpy-0.8.6] ************************************************************************
[pplpy-0.8.6] Error running the postinst script for pplpy-0.8.6.
[pplpy-0.8.6] ************************************************************************
[pplpy-0.8.6] Please email sage-devel (http://groups.google.com/group/sage-devel)
[pplpy-0.8.6] explaining the problem and including the log files
[pplpy-0.8.6]   /mnt/d/Programming/sage/logs/pkgs/pplpy-0.8.6.log
[pplpy-0.8.6] and
[pplpy-0.8.6]   /mnt/d/Programming/sage/config.log
[pplpy-0.8.6] Describe your computer, operating system, etc.
[pplpy-0.8.6] ************************************************************************
make[4]: *** [Makefile:2098: pplpy-no-deps] Error 1
make[3]: *** [Makefile:2098: /mnt/d/Programming/sage/local/var/lib/sage/installed/pplpy-0.8.6] Error 2
make[2]: *** [Makefile:1797: all-build] Error 2
make[2]: Leaving directory '/mnt/d/Programming/sage/build/make'

[vdelecroix]

cp is not the actual error. The problem is before [pplpy-0.8.6] ValueError: source code string cannot contain null bytes. I believe that the post-install script is not aborted if compilation fails. Since the documentation was not created build/html/*'.

So one thing is to solve "abort on failure" and the other thing is to fix the issue.

[vdelecroix]

Moreover, none of the pplpy file contains null bytes string.

[mkoeppe]

Is this error reproducible in the WSL GH Actions workflow? (which needs attention, by the way - #31088)

[vdelecroix]

BTW, is WSL 1.0 a supported platform for SageMath? The ​https://wiki.sagemath.org/SageWindows only mentions 2.0. If the answer is no, this is not a critical priority.

[mkoeppe]

Moving to 9.4, as 9.3 has been released.

[mkoeppe]

Setting a new milestone for this ticket based on a cursory review.