Image build finishes export then cannot find verifier

scope: generic · severity: trap · confidence: proven · subsystem: build

Evidence

2026-09-27 screenshot shows tools/ph-build.sh line 1286 trying /work/tools/bootimg-verify.py; lib/porthole_cmd_sandbox.py mounts porthole at /porthole and the device worktree at /work; tests/test_ph_build.sh checks the call sites

Symptom — porthole build image completes pmbootstrap export, then says /work/tools/bootimg-verify.py: No such file or directory and refuses the image.

Cause — /work is the device worktree in the sandbox. Porthole’s own tools are mounted at /porthole. The build script used the worktree path for its verifier, so the failure appeared only after the expensive install and export.

What to do — run a porthole revision that resolves boot image helpers from the porthole checkout. Check the sandbox mounts with porthole sandbox status before retrying. tests/test_ph_build.sh guards the verifier and repacker call sites against this path mix-up.