nix | testing: add pythonPackages.pyexpect Signed-off-by: Kosyrev Serge <skosyrev@ptsecurity.com>
nix: add cpio, qemu and gdb, to finalize the environment-independence Signed-off-by: Kosyrev Serge <skosyrev@ptsecurity.com>
build: Nix environment Signed-off-by: Kosyrev Serge <skosyrev@ptsecurity.com>