portage-ng --merge
>>> Emerging : portage://app-shells/zsh-5.9-r7:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://app-shells/zsh-5.9-r7
│ └─ file ─┤ 3.18 Mb zsh-5.9.tar.xz
│ download portage://dev-libs/libpcre-8.45-r4
│ └─ file ─┤ 1.51 Mb pcre-8.45.tar.bz2
└─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"
└─step 3─┤ run portage://dev-libs/libpcre-8.45-r4
└─step 4─┤ downgrade portage://app-shells/zsh-5.9-r7 (replaces pkg://app-shells/zsh-5.9.0.3-r2)
│ └─ conf ─┤ USE = "gdbm* pcre -caps -debug -doc -examples -maildir -static -valgrind"
└─step 5─┤ run portage://app-shells/zsh-5.9-r7
Total: 6 actions (2 downloads, 1 install, 1 downgrade, 2 runs), grouped into 5 steps.
4.68 Mb to be downloaded.