Among conceptually Unix-like OSes, at least one tried to do something along these lines: see http://www.bitsavers.org/pdf/apollo/SR10/011021-A00_Using_Your_Aegi

Among conceptually Unix-like OSes, at least one tried to do something along these lines: see http://www.bitsavers.org/pdf/apollo/SR10/011021-A00_Using_Your_Aegis_Environment_Jul88.pdf http://www.bitsavers.org/pdf/apollo/SR10/011021-A00_Using_Yo... PDF pp 151 and following.