refactor(hott/algebra/precategory/basic): improve basic.hlean compilation time
refactor(hott/algebra/precategory/basic): improve basic.hlean compilation time

eigengrau/lean,c-cube/lean,leanprover-community/lean,soonhokong/lean,soonhokong/lean,soonhokong/lean-windows,soonhokong/lean-osx,soonhokong/lean-osx,avigad/lean,htzh/lean,fpvandoorn/lean,johoelzl/lean,levnach/lean,leanprover-community/lean,soonhokong/lean-windows,eigengrau/lean,UlrikBuchholtz/lean,UlrikBuchholtz/lean,fgdorais/lean,rlewis1988/lean,soonhokong/lean-osx,leodemoura/lean,Kha/lean,soonhokong/lean,fpvandoorn/lean2,leodemoura/lean,dselsam/lean,sp3ctum/lean,leanprover/lean,rlewis1988/lean,leanprover/lean,leanprover-community/lean,UlrikBuchholtz/lean,leanprover/lean,dselsam/lean,sp3ctum/lean,leanprover/lean,avigad/lean,soonhokong/lean-windows,eigengrau/lean,leanprover/lean,johoelzl/lean,digama0/lean,UlrikBuchholtz/lean,rlewis1988/lean,htzh/lean,levnach/lean,dselsam/lean,htzh/lean,dselsam/lean,digama0/lean,leodemoura/lean,leanprover-community/lean,leanprover/lean,soonhokong/lean-windows,rlewis1988/lean,leodemoura/lean,fpvandoorn/lean,fgdorais/lean,avigad/lean,fpvandoorn/lean2,soonhokong/lean-windows,dselsam/lean,johoelzl/lean,c-cube/lean,soonhokong/lean-osx,avigad/lean,fpvandoorn/lean2,levnach/lean,digama0/lean,javra/lean,levnach/lean,c-cube/lean,eigengrau/lean,javra/lean,dselsam/lean,Kha/lean,leodemoura/lean,soonhokong/lean,avigad/lean,sp3ctum/lean,fpvandoorn/lean,UlrikBuchholtz/lean,fgdorais/lean,htzh/lean,fpvandoorn/lean2,rlewis1988/lean,sp3ctum/lean,fgdorais/lean,digama0/lean,sp3ctum/lean,fpvandoorn/lean,javra/lean,Kha/lean,eigengrau/lean,johoelzl/lean,levnach/lean,digama0/lean,c-cube/lean,fpvandoorn/lean,leanprover-community/lean,javra/lean,fpvandoorn/lean2,soonhokong/lean,johoelzl/lean,htzh/lean,fgdorais/lean,c-cube/lean,Kha/lean,rlewis1988/lean,johoelzl/lean,digama0/lean,javra/lean,fgdorais/lean,soonhokong/lean-osx,fpvandoorn/lean,leanprover-community/lean,Kha/lean,leodemoura/lean,avigad/lean,Kha/lean