portage-ng --merge
>>> Emerging : portage://dev-lang/swi-prolog-10.0.2:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://dev-lang/swi-prolog-10.0.2
│ └─ file ─┤ 12.23 Mb swipl-10.0.2.tar.gz
│ download portage://dev-libs/libpcre-8.45-r4
│ └─ file ─┤ 1.51 Mb pcre-8.45.tar.bz2
│ download portage://dev-libs/ossp-uuid-1.6.6
│ └─ file ─┤ 53.56 Kb ossp-uuid-UUID_1_6_6.tar.gz
└─step 2─┤ install portage://dev-libs/libpcre-8.45-r4
│ └─ conf ─┤ USE = "bzip2 pcre16* readline zlib (unicode) cxx jit -libedit -pcre32 -static-libs -valgrind"
│ │ SLOT = "3"
│ install portage://dev-libs/ossp-uuid-1.6.6
│ └─ conf ─┤ USE = "cxx -perl -static-libs -verify-sig"
│ │ PERL_FEATURES = "ithreads -quadmath"
└─step 3─┤ run portage://dev-libs/libpcre-8.45-r4
│ run portage://dev-libs/ossp-uuid-1.6.6
└─step 4─┤ install portage://dev-lang/swi-prolog-10.0.2
│ └─ conf ─┤ USE = "gmp* pcre pgo* ssl cli ipc -berkdb* -archive -debug -doc -gui -java -minimal -odbc -test -yaml"
└─step 5─┤ run portage://dev-lang/swi-prolog-10.0.2
Total: 9 actions (3 downloads, 3 installs, 3 runs), grouped into 5 steps.
13.79 Mb to be downloaded.