equivalent to pip install -e . ?

Hello, is there an equivalent to calling pip install -e . in a virtual-env for example? I’m currently using a flake and having to call flake update every time while developing a package is cumbersome. Is the right way to handle this to actually include pip in the shell and call pip install -e . in the shell hook?

[bmabsout]

There are 2 things I would like to have an editable install for, there’s a separate repository that I am including as a submodule and there’s the package I work on directly. Right now what I do with respect to mach-nix is I run everything from the main folder so the imports work (or I create a virtualenv and pip install -e in there). But with an editable install, the current package would be in scope at all times. If you look at the poetry2nix documentation, there’s a “mkPoetryEditablePackage”

[yajo]

My objective is to set up a development environment, where I need to edit multiple dependencies simultaneously (basically: odoo + extra addons).

According to my tests, while developing, purity is an enemy. Development is dirty by definition. To let mach-nix to serve as a replacement for Pipenv, Poetry, PDM… it needs to support development.

Of course, for packaging the final product, I’d use another kind of install (more or less the same requirements argument, but removing some -e flags from there). AFAIK this is a normal workflow, as flakes let us split the devShell definition from packages.

FTR Python supports deploying .pth files which point to other on-disk paths, son an editable install could just produce that file in the nix store as a python module, which the python interpreter would resolve appropriately. That would be great for development. If I’m not wrong, that’s what poetry2nix does.