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

Calculating dependencies ...

!!! Problem resolving dependencies for =www-client/elinks-0.18.0
 done!
Dependency resolution took 0.82 s (backtrack: 0/20).


!!! The ebuild selected to satisfy "=www-client/elinks-0.18.0" has unmet requirements.
- www-client/elinks-0.18.0::gentoo USE="X bzip2 doc gpm mouse nls python ssl unicode zlib -bittorrent -brotli -curl -debug -finger -ftp -gemini -gnutls -gopher -guile -idn -javascript -libcss -lua -lzma -nntp -perl -samba -sftp -test -tre -xml -zstd" GUILE_SINGLE_TARGET="3-0 -2-2" LUA_SINGLE_TARGET="lua5-1 -lua5-3 -lua5-4 -luajit" PYTHON_SINGLE_TARGET="-python3_12 -python3_13"

  The following REQUIRED_USE flag constraints are unsatisfied:
    python? ( exactly-one-of ( python_single_target_python3_12 python_single_target_python3_13 ) )

  The above constraints are a subset of the following complete expression:
    guile? ( exactly-one-of ( guile_single_target_2-2 guile_single_target_3-0 ) ) javascript? ( curl libcss ) lua? ( exactly-one-of ( lua_single_target_luajit lua_single_target_lua5-1 lua_single_target_lua5-3 lua_single_target_lua5-4 ) ) python? ( exactly-one-of ( python_single_target_python3_12 python_single_target_python3_13 ) ) sftp? ( curl )