flowc

flowc is the "compiler and linker" for flows and flow libraries, although it is not very similar to what you might be familiar with as a compiler or linked.

It loads flow definition files, and builds the flow hierarchy reading from referenced flows or functions and library references, and builds the flow in memory.

Then it connects all functions with data flows through the hierarchy and removes the flow structure leaving a "network of functions" which it then optimizes (removing unused functions and connections).

It checks that types match and required connections exist.

Lastly it generates a manifest describing the flow, which can be executed by flowr.

Depending on the command line options used it then invokes flowr (using cargo to ensure it is up to date and built).

Most of the compilation and linking logic is in the flowclib library, which can be used to build other command line utilities for compiling, or an IDE.