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

Calculating dependencies ... done!
Dependency resolution took 1.07 s (backtrack: 0/20).

[ebuild  N     ] virtual/fortran-0-r1::gentoo  USE="openmp" 0 KiB
[ebuild  N     ] sci-libs/coinor-utils-2.11.12:0/3::gentoo  USE="bzip2 zlib -blas -doc -glpk -lapack -static-libs -test" 1216 KiB
[ebuild  N     ] sci-libs/coinor-alps-1.5.7::gentoo  USE="-doc -test" 873 KiB
[ebuild  N     ] sci-libs/coinor-bcps-0.94.5::gentoo  USE="-doc -test" 686 KiB

Total: 4 packages (4 new), Size of downloads: 2774 KiB