Boost Process is currently relatively poorly maintained; bugs are remaining unfixed for multiple Boost releases, the code and issue tracking is confusingly spread across multiple repositories, see https://github.com/boostorg/process/ and https://github.com/klemens-morgenstern/boost-process), which themselves each have different versions of the code.

There's been no recent "modernization" of the module, i.e an option use std::filesystem over boost::filesystem, like other Boost modules, which is why we no-longer support external signing on Windows, see #24065.

It's inclusion in our project is also a downside to our Boost consolidation / removal, i.e #24742, as Process's own dependencies (filesystem, system, win-api, + others) pull in even more Boost modules (i.e asio), which in turn pull in further modules..

If we are going to continue to use/expand our usage of it, I think we need some sort of plan, addressing the above, rather than leaving it ignored while we start accumulating workarounds, i.e #24523, in our own code to support it, and it's presence potentially blocks other project goals.

One potential alternative is https://github.com/arun11299/cpp-subprocess.