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Merged
davidhewitt merged 2 commits into from
Apr 30, 2026
+9 −2
Merged

trigger rebuilds when virtualenv changes #6008

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trigger rebuilds when virtualenv changes
davidhewitt Apr 30, 2026
9b42f6a
newsfragment
davidhewitt Apr 30, 2026
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1 change: 1 addition & 0 deletions newsfragments/6008.changed.md
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
`pyo3-ffi` will now rebuild when the Python virtual environment changes in-place.
10 changes: 8 additions & 2 deletions pyo3-build-config/src/impl_.rs
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Expand Up @@ -1818,10 +1818,16 @@ where
}

fn venv_interpreter(virtual_env: &OsStr, windows: bool) -> PathBuf {
let venv = Path::new(virtual_env);
// Rebuild if the virtual environment configuration changes
println!(
"cargo:rerun-if-changed={}",
venv.join("pyvenv.cfg").display()
);
if windows {
Path::new(virtual_env).join("Scripts").join("python.exe")
venv.join("Scripts").join("python.exe")
} else {
Path::new(virtual_env).join("bin").join("python")
venv.join("bin").join("python")
}
}

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