The generecon-1.2.1.ebuild (which I submitted in #128514) was absorbed into the sci overlay. The move of the required dependency dev-util/guile to dev-scheme/guile breaks this generecon-1.2.1.ebuild so the dependency on guile needs to be modified to reflect the new location. Reproducible: Always Steps to Reproduce: 1. emerge generecon 2. 3. Actual Results: # emerge generecon These are the packages that would be merged, in order: Calculating dependencies - emerge: there are no ebuilds to satisfy "dev-util/guile". (dependency required by "sci-biology/generecon-1.2.1-r1" [ebuild]) Expected Results: # emerge generecon These are the packages that would be merged, in order: Calculating dependencies... done! [ebuild N ] sci-biology/generecon-1.2.1-r1 0 kB [2] Total size of downloads: 0 kB Portage overlays: [1] /usr/local/portage [2] /usr/local/sci Would you like to merge these packages? [Yes/No] y >>> Emerging (1 of 1) sci-biology/generecon-1.2.1-r1 to / ..... Changing the depdency manually resolves this problem, just need to have the change made in the overlay.