Poetry doesn't do this caching trick. It creates its own cache with the same sort of structure as Pip's, and as far as I can tell it uses its own reimplementation of Pip's core installation logic from there (including `installer`, which is a factored-out package for the part of Pip that actually unpacks the wheel and copies files).
Poetry doesn't do this caching trick. It creates its own cache with the same sort of structure as Pip's, and as far as I can tell it uses its own reimplementation of Pip's core installation logic from there (including `installer`, which is a factored-out package for the part of Pip that actually unpacks the wheel and copies files).