Opam configuration for both sandbox and compilation cache

config

pre-install-commands:
  ["opam-bin-cache.sh" "restore" build-id name] {?build-id}
wrap-build-commands: [
  ["opam-bin-cache.sh" "wrap" build-id] {?build-id}
  ["%{hooks}%/sandbox.sh" "build"] {os = "linux"}
]
wrap-install-commands: [
  ["opam-bin-cache.sh" "wrap" build-id] {?build-id}
  ["%{hooks}%/sandbox.sh" "install"] {os = "linux"}
]
wrap-remove-commands: ["%{hooks}%/sandbox.sh" "remove"] {os = "linux"}
post-install-commands:
  ["opam-bin-cache.sh" "store" build-id installed-files]
    {?build-id & error-code = "0"}