Also systemd is very dependent on many other libraries (optional or mandatory). Adding json as an internal implementation instead of using an outer dependency i

Also systemd is very dependent on many other libraries (optional or mandatory). Adding json as an internal implementation instead of using an outer dependency is not justifiable with "dependency control reasons". From the readme: glibc >= 2.14 libcap libmount >= 2.20 (from util-linux) libseccomp >= 1.0.0 (optional) libblkid >= 2.24 (from util-linux) (optional) libkmod >= 15 (optional) PAM >= 1.1.2 (optional) libcryptsetup (optional) libaudit (optional) libacl (optional) libselinux (optional) liblzma (optional) liblz4 >= 119 (optional) libgcrypt (optional) libqrencode (optional) libmicrohttpd (optional) libpython (optional) libidn (optional) gobject-introspection > 1.40.0 (optional) elfutils >= 158 (optional) make, gcc, and similar tools During runtime, you need the following additional dependencies: util-linux >= v2.25 required dbus >= 1.4.0 (strictly speaking optional, but recommended) dracut (optional) PolicyKit (optional) When building from git, you need the following additional dependencies: docbook-xsl xsltproc automake autoconf libtool intltool gperf gtkdocize (optional) python (optional) python-lxml (optional, but required to build the indices) sphinx (optional)