Installation mangles existing invoke installation

Our CI is failing with an assortment of syntax errors in invoke package. On closer inspection we can see some files in invoke got mangled somehow:


My guess is that `magicinvoke` install its own copy of `invoke` (can someone confirm that the case?) - but because poetry installs `invoke` and `magicinvoke` in parallel, there is a possibility these two installations partially writing on top of each other.