true : bin_annot, safe_string, \
       package(astring), package(fpath), package(fmt), package(logs), \
       package(unix)

<_b0> : -traverse
<src> : include
<src/top/bos_top*> : package(compiler-libs.toplevel)
<src/setup/bos_setup*> : package(rresult), package(fmt.tty), package(logs.fmt)
