Mirror the .github workflow fixes: - ocio-env.sh has no exec bit (git doesn't preserve one reliably) — bare invocation fails 'Permission denied'; call it through bash in both the Linux and Windows configure steps - ocio-sys is the GIT fork, so the Windows registry-cache unpack + 'ls .../ocio-sys-0.2.1/build.rs' glob can never match (git deps have no .crate archive); the fork's build.rs already carries the fix — the unpack/sed block is removed