Problem of Standing up This Website Locally - Cannot install packages from requirements.txt

[landgh]

On Windows Git Bash using Python3.13.0, did

• python -m venv venv
• source venv/Scripts/activate
• pip install -r requirements.txt"

Getting the following error. It seems like related to VS C++ Build Tool but I couldn't resolve it. Any ideas?

---

Getting requirements to build wheel ... done
Installing backend dependencies ... done
Preparing metadata (pyproject.toml) ... error
error: subprocess-exited-with-error

× Preparing metadata (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [12 lines of output]
+ D:\mypython\solara_2\solara\venv\Scripts\python.exe C:\Users\ledin\AppData\Local\Temp\pip-install-mdn8gzk7\numpy_727cfa85212a45bda952da065b0924c3\vendored-meson\meson\meson.py setup C:\Users\ledin\AppData\Local\Temp\pip-install-mdn8gzk7\numpy_727cfa85212a45bda952da065b0924c3 C:\Users\ledin\AppData\Local\Temp\pip-install-mdn8gzk7\numpy_727cfa85212a45bda952da065b0924c3.mesonpy-u9w_wunf -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --native-file=C:\Users\ledin\AppData\Local\Temp\pip-install-mdn8gzk7\numpy_727cfa85212a45bda952da065b0924c3.mesonpy-u9w_wunf\meson-python-native-file.ini
The Meson build system
Version: 1.2.99
Source dir: C:\Users\ledin\AppData\Local\Temp\pip-install-mdn8gzk7\numpy_727cfa85212a45bda952da065b0924c3
Build dir: C:\Users\ledin\AppData\Local\Temp\pip-install-mdn8gzk7\numpy_727cfa85212a45bda952da065b0924c3.mesonpy-u9w_wunf
Build type: native build
Project name: NumPy
Project version: 1.26.4

  ..\meson.build:1:0: ERROR: Compiler cl cannot compile programs.

  A full log can be found at C:\Users\ledin\AppData\Local\Temp\pip-install-mdn8gzk7\numpy_727cfa85212a45bda952da065b0924c3\.mesonpy-u9w_wunf\meson-logs\meson-log.txt
  [end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.

[iisakkirotko]

Hi @landgh! I think this is due to the fact that you're using Python 3.13, which we (or rather, some of our dependencies) don't support yet. In this case the error originates from NumPy, which only added Python 3.13 support in version 2.1, while Solara is restricted to using NumPy <2. I think Python 3.12 is supported by all our dependencies except Vaex.