c/c++ package manager

@ReenigneArcher is already working on this.

Since Sep 9, 2025.

### Is there an existing issue for this item?

- [x] I have searched the existing issues

### Repositories

LizardByte/Sunshine, LizardByte/libdisplaydevice, LizardByte/tray

### Languages/Skills/Technologies

C, C++, CMake

### Description

It's getting a little bit old when system packages are updated in different package managers, introducing breaking changes, and it's very difficult if not impossible to pin the versions.

Below is a table showing the current Sunshine packages and their respective names in both Conan and Conda. Conan seems to be a bit more complete.

I've also been reading about cpm (https://github.com/cpm-cmake/CPM.cmake) which seems interesting, particularly about the ability to easily apply patches.

The other option is to move more packages to submodules. In all cases I think static linking whereever possible will alleviate annoying issues for users on Linux and macOS.

The end goal is to just simplify the build process and make the builds more repeatable/consistent. I know that Plex uses Conan, which is what drew me to investigate that one.

I also briefly looked at vcpkg, but it is missing a lot of important ones.

Any feedback/discussion would be welcomed!

| Type | package name | Conan | Conda |
|--------------|---------------------------|-------------------|-------------------|
| System | appindicator3-0.1 | ? | ? |
| System | ayatana-appindicator3-0.1 | ? | ? |
| System/Fetch | Boost | boost | boost-cpp |
| System | doxygen | doxygen | doxygen |
| Submodule | glad (generator) | glad | glad |
| System | graphviz | ? | graphviz |
| Submodule | googletest | gtest | gtest |
| System | libcap | libcap | libcap |
| System | libcurl | libcurl | libcurl |
| System | libdrm | libdrm | libdrm |
| System | libevdev | libevdev | evdev |
| System | libnotify | ? | ? |
| System | libva | libva | libva |
| System | libva-drm | ? | ? |
| System | minhook | minhook | ? |
| System | miniupnpc | miniupnpc | ? |
| Submodule | nanors | ? | ? |
| System | nlohmann_json | nlohmann_json | nlohmann_json |
| System | npm | nodejs | nodejs |
| Submodule | nv-codec-headers | nv-codec-headers | ? |
| Submodule | nvapi-open-source-sdk | ? | ? |
| Submodule | nvfbc | ? | ? |
| System | OpenSSL | openssl | openssl |
| System | PkgConfig | pkgconf | pkgconfig |
| Submodule | Simple-Web-Server | ? | ? |
| System | systemd | libsystemd | libsystemd |
| System | Threads | ? | ? |
| Submodule | TPCircularBuffer | ? | ? |
| System | Udev | libudev | libudev |
| System | Wayland | wayland | wayland |
| Submodule | wayland-protocols | wayland-protocols | wayland-protocols |
| Submodule | wlr-protocols | ? | ? |
| System | X11 | xorg ? | xorg-libx11 |
| System | zlib | zlib | zlib or libzlib |

Packages that should not come from a package manager:

| Type | package name |
|--------------|---------------------|
| Submodule | build-deps (FFmpeg) |
| Submodule | doxyconfig |
| Submodule | inputtino |
| Submodule | libdisplaydevice |
| Submodule | moonlight-common-c |
| Submodule | tray |
| Submodule | ViGEmClient |

Conda References:
- https://wolfv.github.io/posts/2019/06/12/conda-for-cpp.html
- https://computing.docs.ligo.org/conda/compiling/

Also see: https://moderncppdevops.com/pkg-mngr-roundup/ for other options.

### Estimated Effort

effort:Extra-Large

### Priority

priority:Medium

### Target Milestone

6+ months

### Dependencies

_No response_