I spend a good amount of time on my tooling (too much? not sure), because fairly small amounts of friction can distract me for quite a while (long compilation,

I spend a good amount of time on my tooling (too much? not sure), because fairly small amounts of friction can distract me for quite a while (long compilation, having to copy over files - it's especially bad when the step requires attention). Have it happen often enough and productivity approaches 0.