These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.70 s (backtrack: 0/20).



[ebuild  N     ] app-containers/apptainer-1.4.5::gentoo  USE="network seccomp -rootless -suid (-systemd)" 17057 KiB
[ebuild  N     ]  dev-lang/go-1.27.2:0/1.27.2::gentoo  CPU_FLAGS_X86="sse2" 34312 KiB

Total: 2 packages (2 new), Size of downloads: 51368 KiB

 * Error: circular dependencies:

(dev-lang/go-1.27.2:0/1.27.2::gentoo, ebuild scheduled for merge) depends on
 (dev-lang/go-1.27.2:0/1.27.2::gentoo, ebuild scheduled for merge) (buildtime)

 * Note that circular dependencies can often be avoided by temporarily
 * disabling USE flags that trigger optional dependencies.

The following USE changes are necessary to proceed:
 (see "package.use" in the portage(5) man page for more details)
# required by app-containers/apptainer-1.4.5::gentoo[-suid]
# required by =app-containers/apptainer-1.4.5 (argument)
>=sys-fs/e2fsprogs-1.47.4 fuse

 * In order to avoid wasting time, backtracking has terminated early
 * due to the above autounmask change(s). The --autounmask-backtrack=y
 * option can be used to force further backtracking, but there is no
 * guarantee that it will produce a solution.