Move to vcpkgs "subprocess" implementation

[wolfv]

We're currently using a subprocess implementation that isn't very much battle-tested on Windows.

VCPKG has a really nice implementation that I hope we could easily re-use: https://github.com/microsoft/vcpkg/blob/master/toolsrc/include/vcpkg/base/system.process.h

[wolfv]

https://github.com/benman64/subprocess/ this looks like another decent alternative

[traversaro]

Other related libraries (not sure if they suit all mamba's needs):

• https://github.com/DaanDeMeyer/reproc
• https://gitlab.com/eidheim/tiny-process-library

If gazebosim/gazebo-classic#2864 gets merged, I plan to add tiny-process-library to conda-forge .

[wolfv]

@traversaro did you start packaging the tiny-process-library already? I am quite interested as well, as I am having some issues with the current implementation on Windows.

[traversaro]

I was waiting for upstream to merge https://gitlab.com/eidheim/tiny-process-library/-/merge_requests/38 , but that is not strictly necessary, we could start packaging it in any case or keeping that patch local for now. However I did not worked on it for now.

[wolfv]

@traversaro I checked tiny-process-library and saw that it requires MSYS2.

For now I am trying reproc++ in #569 and it's already better working vs what I had before :)
I think I am going to package reproc for conda-forge -- thanks for the pointers!

[traversaro]

@traversaro I checked tiny-process-library and saw that it requires MSYS2.

To clarify, MSYS2 support in tiny-process-library is optional, and it works fine even without MSYS2. In any case, that's not a big problem, both reproc++ and tiny-process-library are small libraries that do one job in a great way, and it will be great to have both of them in conda-forge .

[wolfv]

yeah I am trying to get reproc on conda-forge :) conda-forge/staged-recipes#13113

[wolfv]

we've completed the transition to reproc for now. Hopefully it works well enough and I never have to touch this again 😅