On January 23, an initial set of patches for MirOS support has been committed to pkgsrc by Alistair Crooks. As a part of these is still on hold for the moment, some patches are still necessary for successfully bootstrapping. You can bootstrap pkgsrc as root, installing for example into /usr/pkg, or as an unprivileged user. MirPorts and pkgsrc can be used in parallel.
Even if only a small number of packages has been tested on MirOS so far, the adoption of pkgsrc will give users access to vast, well-maintained archive of third-party software.