`maturin develop` not working in git bash

[lifr0m]

Bug Description

maturin develop gives Warning: Failed to determine python platform when run in git bash, but works in windows command prompt.

Your maturin version (maturin --version)

1.13.3

Your Python version (python -V)

3.14.5

Your pip version (pip -V)

26.1.1

What bindings you're using

pyo3

Does cargo build work?

• Yes, it works

If on windows, have you checked that you aren't accidentally using unix path (those with the forward slash /)?

• Yes

Steps to Reproduce

1. Open git bash.
2. Run mkdir selenia.
3. Run cd selenia.
4. Run python -m venv .venv.
5. Run . ./.venv/Scripts/activate.
6. Run pip install maturin.
7. Run maturin init.
8. Run maturin develop.

2026-05-24T15:37:01.331468Z  INFO develop_cmd:into_build_context: maturin::build_options: close time.busy=600ns time.idle=5.00µs
2026-05-24T15:37:01.331674Z DEBUG develop_cmd:build: maturin::project_layout: Found pyproject.toml in working directory at "C:\\Users\\lifr0m\\Desktop\\selenia\\pyproject.toml"
2026-05-24T15:37:01.331968Z DEBUG develop_cmd:build: maturin::project_layout: Using cargo manifest path from working directory: "C:\\Users\\lifr0m\\Desktop\\selenia\\Cargo.toml"
2026-05-24T15:37:01.332200Z DEBUG develop_cmd:build:resolve_cargo_metadata: maturin::project_layout: Resolving cargo metadata from "C:\\Users\\lifr0m\\Desktop\\selenia\\Cargo.toml"
2026-05-24T15:37:01.386346Z  INFO develop_cmd:build:resolve_cargo_metadata: maturin::project_layout: close time.busy=54.1ms time.idle=400ns
2026-05-24T15:37:01.387177Z DEBUG develop_cmd:build: maturin::project_layout: Project layout resolved project_root=C:\Users\lifr0m\Desktop\selenia python_dir=C:\Users\lifr0m\Desktop\selenia rust_module=C:\Users\lifr0m\Desktop\selenia\selenia python_module=Some("C:\\Users\\lifr0m\\Desktop\\selenia\\selenia") extension_name=selenia module_name=selenia
⚠️  Warning: Failed to determine python platform
⚠️  Warning: Failed to determine python platform
2026-05-24T15:37:01.544533Z  INFO develop_cmd:build:check_executable: maturin::python_interpreter::discovery: close time.busy=118ms time.idle=1.00µs executable=/c/Users/lifr0m/Desktop/selenia/.venv\python.exe
⚠️  Warning: Skipping '/c/Users/lifr0m/Desktop/selenia/.venv\python.exe': could not determine version from interpreter name 'python.exe'. Specify a version like 'python.exe3.11'.
2026-05-24T15:37:01.545153Z  INFO develop_cmd:build: maturin::build_context::builder: close time.busy=214ms time.idle=600ns
2026-05-24T15:37:01.545382Z  INFO develop_cmd: maturin::commands::develop: close time.busy=282ms time.idle=4.40µs
💥 maturin failed
  Caused by: Couldn't find any python interpreters from '/c/Users/lifr0m/Desktop/selenia/.venv\python.exe'.```