diff --git a/hott/algebra/binary.lean b/hott/algebra/binary.hlean similarity index 100% rename from hott/algebra/binary.lean rename to hott/algebra/binary.hlean diff --git a/hott/algebra/category/basic.lean b/hott/algebra/category/basic.hlean similarity index 100% rename from hott/algebra/category/basic.lean rename to hott/algebra/category/basic.hlean diff --git a/hott/algebra/group.lean b/hott/algebra/group.hlean similarity index 100% rename from hott/algebra/group.lean rename to hott/algebra/group.hlean diff --git a/hott/algebra/groupoid.lean b/hott/algebra/groupoid.hlean similarity index 100% rename from hott/algebra/groupoid.lean rename to hott/algebra/groupoid.hlean diff --git a/hott/algebra/precategory/basic.lean b/hott/algebra/precategory/basic.hlean similarity index 100% rename from hott/algebra/precategory/basic.lean rename to hott/algebra/precategory/basic.hlean diff --git a/hott/algebra/precategory/constructions.lean b/hott/algebra/precategory/constructions.hlean similarity index 100% rename from hott/algebra/precategory/constructions.lean rename to hott/algebra/precategory/constructions.hlean diff --git a/hott/algebra/precategory/functor.lean b/hott/algebra/precategory/functor.hlean similarity index 100% rename from hott/algebra/precategory/functor.lean rename to hott/algebra/precategory/functor.hlean diff --git a/hott/algebra/precategory/iso.lean b/hott/algebra/precategory/iso.hlean similarity index 100% rename from hott/algebra/precategory/iso.lean rename to hott/algebra/precategory/iso.hlean diff --git a/hott/algebra/precategory/morphism.lean b/hott/algebra/precategory/morphism.hlean similarity index 100% rename from hott/algebra/precategory/morphism.lean rename to hott/algebra/precategory/morphism.hlean diff --git a/hott/algebra/precategory/natural_transformation.lean b/hott/algebra/precategory/natural_transformation.hlean similarity index 100% rename from hott/algebra/precategory/natural_transformation.lean rename to hott/algebra/precategory/natural_transformation.hlean diff --git a/hott/algebra/relation.lean b/hott/algebra/relation.hlean similarity index 100% rename from hott/algebra/relation.lean rename to hott/algebra/relation.hlean diff --git a/hott/axioms/funext.lean b/hott/axioms/funext.hlean similarity index 100% rename from hott/axioms/funext.lean rename to hott/axioms/funext.hlean diff --git a/hott/default.lean b/hott/default.hlean similarity index 100% rename from hott/default.lean rename to hott/default.hlean diff --git a/hott/equiv_precomp.lean b/hott/equiv_precomp.hlean similarity index 100% rename from hott/equiv_precomp.lean rename to hott/equiv_precomp.hlean diff --git a/hott/init/equiv.lean b/hott/init/equiv.hlean similarity index 100% rename from hott/init/equiv.lean rename to hott/init/equiv.hlean diff --git a/hott/init/funext_from_ua.lean b/hott/init/funext_from_ua.hlean similarity index 100% rename from hott/init/funext_from_ua.lean rename to hott/init/funext_from_ua.hlean diff --git a/hott/init/funext_varieties.lean b/hott/init/funext_varieties.hlean similarity index 100% rename from hott/init/funext_varieties.lean rename to hott/init/funext_varieties.hlean diff --git a/hott/path.lean b/hott/init/path.hlean similarity index 100% rename from hott/path.lean rename to hott/init/path.hlean diff --git a/hott/axioms/ua.lean b/hott/init/ua.hlean similarity index 100% rename from hott/axioms/ua.lean rename to hott/init/ua.hlean diff --git a/hott/logic.lean b/hott/logic.hlean similarity index 100% rename from hott/logic.lean rename to hott/logic.hlean diff --git a/hott/pointed.lean b/hott/pointed.hlean similarity index 100% rename from hott/pointed.lean rename to hott/pointed.hlean diff --git a/hott/trunc.lean b/hott/trunc.hlean similarity index 100% rename from hott/trunc.lean rename to hott/trunc.hlean diff --git a/hott/types/W.lean b/hott/types/W.hlean similarity index 100% rename from hott/types/W.lean rename to hott/types/W.hlean diff --git a/hott/types/pi.lean b/hott/types/pi.hlean similarity index 100% rename from hott/types/pi.lean rename to hott/types/pi.hlean diff --git a/hott/types/prod.lean b/hott/types/prod.hlean similarity index 100% rename from hott/types/prod.lean rename to hott/types/prod.hlean diff --git a/hott/types/sigma.lean b/hott/types/sigma.hlean similarity index 100% rename from hott/types/sigma.lean rename to hott/types/sigma.hlean