Add DYLD environment variables entitlement for macOS#21
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macOS strips DYLD_LIBRARY_PATH from hardened runtime processes.
The runner binary requires the hypervisor entitlement, which
enables hardened runtime, causing macOS to silently strip
DYLD_LIBRARY_PATH before the process starts. This prevents
libkrun from finding libkrunfw.dylib when it lives in a
separate firmware directory.
Add `com.apple.security.cs.allow-dyld-environment-variables` to
the runner entitlements so DYLD_LIBRARY_PATH passes through.
Verify with:
task build-dev-darwin
codesign -d --entitlements - bin/propolis-runner
Expected output includes:
```
[Key] com.apple.security.cs.allow-dyld-environment-variables
[Value]
[Bool] true
```
I was able to boot an image with this patch:
```
DYLD_LIBRARY_PATH=/opt/homebrew/lib bin/propolis-runner "$(cat /tmp/propolis-test.json)"
[2026-03-05T11:04:22Z DEBUG vmm::macos::vstate] Guest memory
host_addr=0x300000000 guest_addr=80000000 len=80000000
[2026-03-05T11:04:22Z DEBUG vmm::macos::vstate] Guest memory
host_addr=0x380000000 guest_addr=140000000 len=20000000
[2026-03-05T11:04:22Z DEBUG utils::macos::epoll] EpollEvent new: 4
[2026-03-05T11:04:22Z DEBUG utils::macos::epoll] EpollEvent data: 4
[2026-03-05T11:04:22Z DEBUG utils::macos::epoll] add fd in: 4
[2026-03-05T11:04:22Z DEBUG devices::legacy::aarch64::gpio]
SET_IRQ_LINE (GPIO)=33
```
JAORMX
approved these changes
Mar 5, 2026
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macOS strips DYLD_LIBRARY_PATH from hardened runtime processes.
The runner binary requires the hypervisor entitlement, which
enables hardened runtime, causing macOS to silently strip
DYLD_LIBRARY_PATH before the process starts. This prevents
libkrun from finding libkrunfw.dylib when it lives in a
separate firmware directory.
Add
com.apple.security.cs.allow-dyld-environment-variablestothe runner entitlements so DYLD_LIBRARY_PATH passes through.
Verify with:
task build-dev-darwin
codesign -d --entitlements - bin/propolis-runner
Expected output includes:
I was able to boot an image with this patch: