portage-ng --merge
>>> Emerging : portage://sys-devel/gcc-15.3.1_p20261002:run?{[]}
These are the packages that would be merged, in order:
Calculating dependencies... done!
└─step 1─┤ download portage://sys-devel/gcc-15.3.1_p20261002
│ └─ file ─┤ 88.22 Mb gcc-15-20261002.tar.xz
│ │ 7.00 Kb gcc-15.2.0-musl-patches-1.tar.xz
│ │ 17.17 Kb gcc-15.2.0-patches-8.tar.xz
└─step 2─┤ update portage://sys-devel/gcc-15.3.1_p20261002 (replaces pkg://sys-devel/gcc-15.2.1_p20260214)
│ └─ conf ─┤ USE = "cet graphite* lto* nls openmp pgo* zstd (cxx) (default-stack-clash-protection) (default-znow) (pie) fortran
│ │ sanitize ssp (-custom-cflags) (-fixed-point) (-ieee-long-double) (-libssp) -ada -cobol -d -debug -doc -go -hardened
│ │ -jit -libgdiagnostics -modula2 -objc -objc++ -objc-gc -rust -systemtap -test -valgrind -vanilla -vtv"
│ │ SLOT = "15"
└─step 3─┤ run portage://sys-devel/gcc-15.3.1_p20261002
Total: 3 actions (1 download, 1 update, 1 run), grouped into 3 steps.
88.25 Mb to be downloaded.