posh is a stripped-down version of pdksh that aims for compliance with Debian's policy, and few extra features.
Created attachment 10340 [details] posh-0.2.27.ebuild (New package)
Created attachment 10341 [details] posh-0.2.27.ebuild (New package)
This SRC_URI appears to be invalid. I guess it must've moved. Could you please provide the new/correct SRC_URI?
Apparently Debian doesn't keep old source packages around. It should work if you rename the .ebuild to posh-0.2.28.ebuild
Committed, thanks :)