The issue was that xbps_pkgdb_get_pkg() did not find any package,
and the code was free(3)ing heap allocated memory before checking for
errno. I suspect that free(3) has touched errno and this errno value
has been propagated to the next code.
Found after a bit of testing on repo.voidlinux.eu.
To put a package on hold mode:
$ xbps-pkgdb -m hold foo
To unhold the package:
$ xbps-pkgdb -m unhold foo
To list packages on hold mode:
$ xbps-query -H
This also close#12 from github.
The list of required external deps is now confuse, libarchive and openssl.
libxbps now includes a wrapper for proplib prefixed with xbps_ rather than prop_.
