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fix: move PyodideWebView into Import tab; fix micropip blob URL error

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Layout fix: WebView as a sibling in the root layout breaks flex geometry even
with position:absolute. Moving it inside the Import tab screen (which Expo Router
keeps mounted after first visit) eliminates the issue entirely and restores the
original simple root layout.

micropip fix: blob: URLs are not a recognised scheme in micropip — they are parsed
as package requirement strings, producing InvalidRequirement. Write the wheel bytes
to Pyodide's Emscripten FS (/tmp/bincio.whl) and install via emfs:/// instead.
This commit is contained in:
Davide Scaini
2026-04-24 23:26:39 +02:00
parent fc814f5026
commit ef45d4f4bb
3 changed files with 25 additions and 24 deletions
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mobile/extraction/PyodideWebView.tsx
+8 -7
View File
@@ -10,9 +10,12 @@ const PY_INSTALL_PACKAGES = [
'await micropip.install(["fitdecode", "gpxpy"])',
].join('\n');
// emfs:// is Pyodide's Emscripten-FS URL scheme — the only reliable way to
// install a wheel from bytes without an http/https URL (blob: URLs are not
// recognised by micropip and cause an InvalidRequirement parse error).
const PY_INSTALL_WHEEL = [
'import micropip',
'await micropip.install(_blobUrl, deps=False)',
'await micropip.install("emfs:///tmp/bincio.whl", deps=False)',
].join('\n');
const PY_EXTRACT = [
@@ -109,16 +112,14 @@ window._bincioExtract = async function(params) {
if (initError) throw new Error(initError);
// Install bincio wheel on first extraction.
// Wheel bytes arrive pre-fetched from the React Native side as base64,
// so the WebView never needs to make an HTTP request (avoids ATS blocks).
// Wheel bytes arrive pre-fetched from React Native (avoids ATS/HTTP issues).
// Write to Pyodide's Emscripten FS so micropip can install via emfs:// URL
// (blob: URLs are not recognised by micropip — they cause an InvalidRequirement error).
if (!wheelReady) {
post({ type: 'progress', msg: 'Loading Bincio…' });
var wheelBytes = Uint8Array.from(atob(wheelBase64), function(c) { return c.charCodeAt(0); });
var wheelBlob = new Blob([wheelBytes]);
var blobUrl = URL.createObjectURL(wheelBlob);
pyodide.globals.set('_blobUrl', blobUrl);
pyodide.FS.writeFile('/tmp/bincio.whl', wheelBytes);
await pyodide.runPythonAsync(_PY_INSTALL_WHEEL);
URL.revokeObjectURL(blobUrl);
wheelReady = true;
}