Molto, a Cargo-style build system for C and C++

Why it surfaced

This is unusually specific developer plumbing with a clear point of view: ranges are refused, dependencies are locked with checksums, and the tool emits a deterministic CycloneDX bill of materials. The homepage includes concrete commands, a complete Project.toml example, a package registry, and a toolchain manager rather than merely promising to simplify development.

Molto replaces much of the usual C/C++ build machinery with one manifest, automatic source discovery, exact dependency versions, and a single-command workflow.