diff --git a/src/GridLayoutBase.jl b/src/GridLayoutBase.jl
index 56ef88a..e9c345f 100644
--- a/src/GridLayoutBase.jl
+++ b/src/GridLayoutBase.jl
@@ -43,9 +43,8 @@ export protrusionsobservable, suggestedbboxobservable, reportedsizeobservable, a
 export ncols, nrows
 export contents, content
 
-# if Base.VERSION >= v"1.4.2"
-#     include("precompile.jl")
-#     _precompile_()
-# end
+if Base.VERSION >= v"1.4.2" && ccall(:jl_generating_output, Cint, ()) == 1
+    include("precompile.jl")
+end
 
 end
diff --git a/src/precompile.jl b/src/precompile.jl
index c783baa..1a1ff31 100644
--- a/src/precompile.jl
+++ b/src/precompile.jl
@@ -1,73 +1,14 @@
-using InteractiveUtils
-
-const Emptykwargs = Base.Iterators.Pairs{Union{}, Union{}, Tuple{}, NamedTuple{(), Tuple{}}}
-
-macro warnpcfail(ex::Expr)
-    modl = __module__
-    file = __source__.file === nothing ? "?" : String(__source__.file)
-    line = __source__.line
-    quote
-        $(esc(ex)) || @warn """precompile directive
-     $($(Expr(:quote, ex)))
- failed. Please report an issue in $($modl) (after checking for duplicates) or remove this directive.""" _file=$file _line=$line
-    end
-end
-
-function _precompile_()
-    ccall(:jl_generating_output, Cint, ()) == 1 || return nothing
-    @warnpcfail precompile(BBox, (Float32, Float32, Float64, Float64))
-
-    @warnpcfail precompile(GridLayout, (Int, Int))
-    @warnpcfail precompile(GridLayout, (GridLayoutSpec,))
-    @warnpcfail precompile(Core.kwfunc(GridLayout), (NamedTuple{(:bbox,), Tuple{Observable{Rect2i}}}, Type{GridLayout}))
-    @warnpcfail precompile(Core.kwfunc(GridLayout), (NamedTuple{(:bbox,), Tuple{Rect2f}}, Type{GridLayout}))
-    # Also precompile `GridLayout(bbox = bbox, alignmode = al)` and the keyword body method
-    fbody = isdefined(Base, :bodyfunction) ? Base.bodyfunction(which(GridLayout, (Int, Int))) : nothing
-    for Al in (Inside, Outside, Mixed)
-        @warnpcfail precompile(Core.kwfunc(GridLayout), (NamedTuple{(:bbox, :alignmode), Tuple{Rect2f, Al}}, Type{GridLayout}))
-        @warnpcfail precompile(Core.kwfunc(GridLayout), (NamedTuple{(:bbox, :alignmode), Tuple{Observable{Rect2f}, Al}}, Type{GridLayout}))
-        @warnpcfail precompile(Core.kwfunc(GridLayout), (NamedTuple{(:bbox, :alignmode), Tuple{NTuple{4,Int}, Al}}, Type{GridLayout}))
-        if fbody !== nothing
-            @warnpcfail precompile(fbody, (Nothing, Nothing, Nothing, Nothing, Nothing, Al, Tuple{Bool, Bool}, Rect2f, Auto, Auto, Bool, Bool, Symbol, Symbol, Float64, Float64, Emptykwargs, Type{GridLayout}, Int, Int))
-        end
-    end
-    @warnpcfail precompile(Core.kwfunc(GridLayout), (NamedTuple{(:colsizes, :rowsizes), Tuple{Fixed, Relative}}, Type{GridLayout}, Int, Int))
-    @warnpcfail precompile(Core.kwfunc(GridLayout), (NamedTuple{(:addedcolgaps,), Tuple{Vector{Fixed}}}, Type{GridLayout}, Int, Int))
-
-    @warnpcfail precompile(Core.kwfunc(Mixed), (NamedTuple{(:left, :top), Tuple{Int, Int}}, Type{Mixed}))
-    for T in (Int, Float32)
-        @warnpcfail precompile(Outside, (T,))
-        @warnpcfail precompile(Outside, (T,T,T,T))
-    end
-    @warnpcfail precompile(align_to_bbox!, (GridLayout, Rect2f))
-    @warnpcfail precompile(update!, (GridLayout,))
-    for I in subtypes(Indexables), J in subtypes(Indexables)
-        @warnpcfail precompile(setindex!, (GridLayout, UnitRange{Int}, I, J))
-        @warnpcfail precompile(setindex!, (GridLayout, Any, I, J))
-    end
-    @warnpcfail precompile(insertrows!, (GridLayout, Int, Int))
-    @warnpcfail precompile(insertcols!, (GridLayout, Int, Int))
-    @warnpcfail precompile(gridnest!, (GridLayout, UnitRange{Int}, UnitRange{Int}))
-    @warnpcfail precompile(add_to_gridlayout!, (GridLayout, GridContent{GridLayout, GridLayout}))
-    @warnpcfail precompile(connect_layoutobservables!, (GridContent{GridLayout, GridLayout},))
-    @warnpcfail precompile(trim!, (GridLayout,))
-    @warnpcfail precompile(sizeobservable!, (Observable{Any}, Observable{Any}))
-    @warnpcfail precompile(_reportedsizeobservable, (Tuple{SizeAttribute,SizeAttribute}, Tuple{AutoSize,AutoSize}, AlignMode, RectSides{Float32}, Tuple{Bool,Bool}))
-    for T in subtypes(Side)
-        @warnpcfail precompile(bbox_for_solving_from_side, (RowCols{Vector{Float64}}, Rect2f, RowCols{Int}, T))
-    end
-    for S in (Left, Right, Top, Bottom)
-        @warnpcfail precompile(protrusion, (GridContent{GridLayout,GridLayout}, S))
-    end
-    @warnpcfail precompile(suggestedbboxobservable, (GridLayout,))
-    for VC in (Vector{Auto}, Vector{GapSize}, Vector{Fixed}, Vector{Relative}, Vector{ContentSize})
-        @warnpcfail precompile(convert_contentsizes, (Int, VC))
-        @warnpcfail precompile(==, (VC, VC))
-    end
-    @warnpcfail precompile(contents, (GridLayout,))
-    @warnpcfail precompile(filterenum, (Function, Type, Vector{ContentSize}))
-    @warnpcfail precompile(zcumsum, (Vector{Float64},))
-
-    # These don't work completely but they have partial success
-    @warnpcfail precompile(repr, (MIME{Symbol("text/plain")}, GridLayout))
+let
+    while true
+        bbox = BBox(0, 1000, 0, 1000)
+        layout = GridLayout(bbox = bbox, alignmode = Outside(0))
+        layout2 = GridLayout(1, 1)
+        layout[1, 1] = layout2
+        align_to_bbox!(layout, bbox)
+        compute_col_row_sizes(1.0, 1.0, layout)
+        determinedirsize(layout, Row)
+        trim!(layout)
+        break
+    end
+    nothing
 end