Download C++ package sources and place them in your project folder.

Install npm and then use npx to run:

$ npx ypkg --help
ypkg <cmd> [args]

Commands:
  ypkg init    create a new cmake project
  ypkg fetch   download and extract packages
  ypkg sync    synchronize package repo (git pull)
  ypkg update  update project packages

Options:
  --version  Show version number                                       [boolean]
  --help     Show help                                                 [boolean]

Initializing the Package Downloader

Simply place a package configuration file in your project root and you are ready to go. An empty file will do:

$ touch ypkg.toml

Alternatively, initialize a cmake project using ypkg:

$ ypkg init

build/
src/
packages/

CMakeLists.txt
ypkg.toml
README.md

.clang-format
.gitignore

Add a Package

The sources are downloaded and extracted into your project folder. Otherwise this tool is non-invasive and you have to integrate the sources into your build workflow manually.

$ ypkg fetch tomlplusplus nlohmann-json

./packages/tomlplusplus/CMakeLists.txt
...

./packages/nlohmann-json/CMakeLists.txt
...

After the previous command, the following lines are inside ypkg.toml:

[packages.tomlplusplus]
version = "3.4.0"
url = "https://github.com/marzer/tomlplusplus/archive/refs/tags/v3.4.0.tar.gz"
sha512sum = "c227fc8147c9459b29ad24002aaf6ab2c42fac22ea04c1c52b283a0172581ccd4527b33c1931e0ef0d1db6b6a53f9e9882c6d4231c7f3494cf070d0220741aa5"

[packages.nlohmann-json]
version = "3.11.3"
url = "https://github.com/nlohmann/json/releases/download/v3.11.3/json.tar.xz"
sha512sum = "1aa94cdc3378a1fe0e3048ee73293e34bfa5ed9b46c6db0993e58e289ef818f7b7a472c0dc9c920114312e2e3ae1ff346ca797407ff48143744592adfd0a41ad"

The Package Repository

The package info is placed in a repository ypkg-repo on github. Currently there are few packages available but it will grow over time.

Fetch or update the package collection:

ypkg sync

Updating Installed Packages

To keep your packages updated, simply do:

$ ypkg update tomlplusplus
$ ypkg update # update all packages

Fetch and Build

Let's say you just cloned somebody else's git repository. Now you can fetch required packages like so:

$ ypkg fetch

This will first read ypkg.toml file. Next it will download and extract required packages into the project folder.

If you invoke ypkg without arguments, it will attempt to do a full build cycle for the project. It will execute the following commands:

$ ypkg fetch
$ cmake -S . -B build -GNinja
$ cmake --build build