This week I got back into Zig. I wanted to build a Zig library from end to end to find out all the wrinkles in publishing it as a package. Ended up building a topological sorting library that does the followings:

- Build dependency graph from dependency pairs.

- Generate the topological sort from the graph.

- Ordered parallel task sets (i.e. subsets of nodes that can run in parallel, within the overall topological order).

- Cycle detection and reporting the cyclical nodes.

https://github.com/williamw520/toposort

It's feature complete, but I still have problem publishing it as a library. Kept getting "unable to find module 'toposort'" error when importing it in a separate project.

Edit: Alright, finally figured out why the module was not published. The default project creation template in Zig 15 uses createModule() in the generated build.zig, which creates a private module. Switched to use addModule() to create a public module and my library can be imported and used by other projects.