emulate native :env option when fork not available
emulate native :env option when fork not available

flycutter/grit,redronin/grit,HrishikeshSingh/testmodulerepo,HrishikeshSingh/testmodulerepo,renatoramiro/grit,kevinsawicki/grit,mojombo/grit,gitcafe-dev/grit,github/grit,brynary/grit,rgroux/grit,thommay/grit,flycutter/grit,gitlabhq/grit,gitlabhq/grit,isabanin/grit,thommay/grit,gitcafe-dev/grit,abicky/grit,brynary/grit,patientslikeme/grit,rgroux/grit,isabanin/grit,kevinsawicki/grit