Verify and install a .cap blob, with its dependency packages supplied
explicitly (§4a composite packages — the browser reactor has no store
directory, so dependents are picked alongside the main package).
Throws PackageIntegrityError when security.json checksums do not match
(§6: reactors MUST reject).
Verify and install a .cap blob, with its dependency packages supplied explicitly (§4a composite packages — the browser reactor has no store directory, so dependents are picked alongside the main package). Throws PackageIntegrityError when security.json checksums do not match (§6: reactors MUST reject).