>>> Emerging : portage://sci-astronomy/psfex-3.17.1:run?{[]}

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

Calculating dependencies... done!

 └─step  1─┤ useflag portage://sci-libs/atlas-3.11.41 (lapack)

 └─step  2─┤ download  portage://sci-astronomy/psfex-3.17.1
             │           └─ file ─┤ 2.26 Mb  	 psfex-3.17.1.tar.gz
             │ download  portage://sci-libs/atlas-3.11.41
             │           └─ file ─┤ 6.34 Mb  	 atlas3.11.41.tar.bz2
             │ download  portage://sci-libs/fftw-3.3.10-r1
             │           └─ file ─┤ 3.95 Mb  	 fftw-3.3.10.tar.gz

 └─step  3─┤ install   portage://sci-libs/atlas-3.11.41 (USE modified)
             │           └─ conf ─┤ USE = "threads -doc -fortran -generic lapack -static-libs"
             │ install   portage://sci-libs/fftw-3.3.10-r1
             │           └─ conf ─┤ USE = "openmp threads* (-zbus) -doc -fortran -mpi -test"
             │                    │ CPU_FLAGS_X86 = "avx avx2 fma3 sse* sse2* -fma4"
             │                    │ SLOT = "3.0/3"

 └─step  4─┤ run       portage://sci-libs/atlas-3.11.41 (USE modified)
             │ run       portage://sci-libs/fftw-3.3.10-r1

 └─step  5─┤ install   portage://sci-astronomy/psfex-3.17.1
             │           └─ conf ─┤ USE = "threads* -doc -plplot"

 └─step  6─┤ run     portage://sci-astronomy/psfex-3.17.1

Total: 10 actions (1 useflag, 3 downloads, 3 installs, 3 runs), grouped into 6 steps.
       12.55 Mb to be downloaded.


>>> Assumptions taken during proving & planning:

  USE flag change (1 package):
  Add to /etc/portage/package.use:
    sci-libs/atlas lapack