INFO: setup
Package:    dev-ml/cryptokit-1.19:0/1.19
Repository: gentoo
Maintainer: ml@gentoo.org
USE:        abi_x86_64 amd64 elibc_glibc kernel_linux ocamlopt zlib
FEATURES:   preserve-libs sandbox userpriv usersandbox
INFO: compile
dune build @install --display=short --profile release -j 8
INFO: test
Skipping make test/check due to ebuild restriction.
INFO: install
dune install --prefix=/var/tmp/portage/dev-ml/cryptokit-1.19/image/usr --libdir=/var/tmp/portage/dev-ml/cryptokit-1.19/image/usr/lib64/ocaml --mandir=/var/tmp/portage/dev-ml/cryptokit-1.19/image/usr/share/man cryptokit
Final size of build directory: 11356 KiB (11.0 MiB)
Final size of installed tree:   5840 KiB ( 5.7 MiB)
LOG: postinst

This library uses the /dev/random device to generate 
random data and RSA keys.  The device should either be
built into the kernel or provided as a module. An
alternative is to use the Entropy Gathering Daemon
(http://egd.sourceforge.net).  Please note that the
remainder of the library will still work even in the
absence of a one of these sources of randomness.