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fix(studio): keep embedded Python prefix bundle-local - #95
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September 20, 2026 08:01 — with 
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Problem
The first relocatable-runtime fix removed the absolute Mach-O dependency, but Python.org's launcher still read the build host from
pyvenv.cfg. On a clean Mac, the final DMG then failed to importencodings; CI runners masked it because their system Python.framework supplied the missing standard library.Fix
pyvenv.cfgtohome = .and place a second copy besidelibpythonatruntime/lib/pyvenv.cfg, where the framework launcher resolves it.sys.prefixand the standard-library path stay inside the app runtime, both before DMG creation and from the mounted final DMG.studio-app-check.The macOS Release continues to publish only the DMG; no ZIP or stale macOS update manifest is generated.
Validation
uv run --no-project --with pytest pytest --confcutdir=tests/packaging -q tests/packaging/test_studio_dmg.py(4 passed)sh -n scripts/package_studio_app.shruntime/lib/pyvenv.cfgwithhome = .makes the existing bad Artifact resolvesys.prefixand stdlib inside the bundle.