Uncron is a simple job queue service that reads command from a UNIX domain socket and executes them sequentially.
Its goal is to serve as an intermediate layer for tools that don't implement locking and thus aren't safe to run in parallel.
You need to install OPAM, the OCaml package manager first.
Follow its installation instructions. OPAM is capable of installing the OCaml compiler itself and it will be
# Initialize the opam environment and install the latest stable compiler
opam init
# Install dependencies
opam install lwt logs containers
# Build uncron
dune build
Then you can copy the uncron executable to somewehre in the $PATH.
On Linux, you can also use the systemd unit file from data/uncron.service.