I ended up running against a patched nixpkgs running with xtrace, and discovered that it’s the mount -t overlay that’s failing. The image in question has 19 layers; splitting this up into 16 layers at a time solved the problem.
I ended up running against a patched nixpkgs running with xtrace, and discovered that it’s the mount -t overlay that’s failing. The image in question has 19 layers; splitting this up into 16 layers at a time solved the problem.