scipy: BUG: Build failure due to problems with shebang line in cythoner.py

I ran into a problem running dev.py that appears to be caused by the shebang line #!python3 in the file scipy/_build_utils/cythoner.py. If I change it to #!/usr/bin/env python then the build works fine.

Most files in scipy with a shebang line use #!/usr/bin/env python. Only files in the _build_utils use #!python3.

Error message when running python dev.py build:

Meson build setup OK
💻  ninja -C /mnt/c/Users/Jozsef/OSS/scipy-test/build
ninja: Entering directory `/mnt/c/Users/Jozsef/OSS/scipy-test/build'
[3/1562] Generating 'scipy/_lib/_ccallback_c.cpython-310-x86_64-linux-gnu.so.p/_ccallback_c.c'.
FAILED: scipy/_lib/_ccallback_c.cpython-310-x86_64-linux-gnu.so.p/_ccallback_c.c
/mnt/c/Users/Jozsef/OSS/scipy-test/scipy/_build_utils/cythoner.py ../scipy/_lib/_ccallback_c.pyx scipy/_lib/_ccallback_c.cpython-310-x86_64-linux-gnu.so.p/_ccallback_c.c
/bin/sh: 1: /mnt/c/Users/Jozsef/OSS/scipy-test/scipy/_build_utils/cythoner.py: not found
[12/1562] Compiling C++ object scipy/_lib/_uarray/_uarray.cpython-310-x86_64-linux-gnu.so.p/_uarray_dispatch.cxx.o
ninja: build stopped: subcommand failed.
Build failed!

If I try running cythoner.py directly:

-bash: /mnt/c/Users/Jozsef/OSS/scipy-conda/scipy/_build_utils/cythoner.py: python3: bad interpreter: No such file or directory

I’m using conda with WSL (Ubuntu).

About this issue

Original URL
State: closed
Created 2 years ago
Comments: 17 (17 by maintainers)

Commits related to this issue

BLD: fix invalid shebang for build helper script Shebangs do not work this way, but Meson could usually paper over the differences by noticing that the last element is "python3" and rewiring it to us... — committed to eli-schwartz/scipy by eli-schwartz 2 years ago
BLD: fix invalid shebang for build helper script Shebangs do not work this way, but Meson could usually paper over the differences by noticing that the last element is "python3" and rewiring it to us... — committed to ev-br/scipy by eli-schwartz 2 years ago
BLD: fix invalid shebang for build helper script Shebangs do not work this way, but Meson could usually paper over the differences by noticing that the last element is "python3" and rewiring it to us... — committed to tylerjereddy/scipy by eli-schwartz 2 years ago

Most upvoted comments

The issue seems to be fixed, so I’ll close it. I ran a search for a other shebang lines in the scipy repo and all of them have been changed to #!/usr/bin/env python or #!/usr/bin/env python3, which both work fine.

JozsefKutas on Jan 24, 2024