In reply to @magisa:matrix.org
Hello all!
I am very new to this so apologies in advance if I ask something very dumb. I want to install lmdb bindings for python. However if i create a simple poetry pyproject.toml only with that dependancy the build fails. I understand why. It's because there is a very dumb line in there (https://github.com/jnwatson/py-lmdb/blob/master/setup.py#L117-L119) which tries to access /usr/bin/patch. That obviously does not exist on NixOS. I am trying to make this work but I am kind of struggling. If I was to build the package imperative stylez I would install lmdb and then export LMDB_FORCE_SYSTEM before calling setup.py. I know how do the former (I think) from extraPackages in mkPoetryEnv but I do not know how do the latter. I cannot find an option to add a bash script before the build.
Appreciate any help you can give me. Thx

i'm also beginner so my advice may not lead you to solution. But if i faced this problem, in first place i would look into implementation of this module in nixpkgs https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/python-modules/lmdb/default.nix

As i understand, for poetry2nix you can define override, which will apply changes to default derivation parameters right before building

In reply to @k900:0upti.me
That's just a general issue with Nix shells and things that try to install things

In reply to @k900:0upti.me
Either you let Poetry manage everything or you let Nix manage everything

In reply to @cchalc:matrix.org
I am trying to install packages with poetry but running into permission errors.

~/Projects/nix-poetry(branch:dev*)(nix-shell)$ poetry add flask
Skipping virtualenv creation, as specified in config file.
Using version ^2.0.2 for Flask

Updating dependencies
Resolving dependencies... (0.6s)

Writing lock file

Package operations: 5 installs, 5 updates, 0 removals

• Installing markupsafe (2.0.1): Failed

EnvCommandError

Command ['/nix/store/5w2swv66p5sl140my96vcipzi2vfrcxq-python3-3.8.12-env/bin/python3.8', '-m', 'pip', 'install', '--no-deps', '/Users/christopher.chalcraft/Library/Caches/pypoetry/artifacts/cd/11/54/fd481eec49cddc06876e526483e7ee8675d0910fed2aa7668a9fc88e62/MarkupSafe-2.0.1-cp38-cp38-macosx_10_9_x86_64.whl'] errored with the following return code 1, and output:
Processing /Users/christopher.chalcraft/Library/Caches/pypoetry/artifacts/cd/11/54/fd481eec49cddc06876e526483e7ee8675d0910fed2aa7668a9fc88e62/MarkupSafe-2.0.1-cp38-cp38-macosx_10_9_x86_64.whl
Installing collected packages: MarkupSafe
ERROR: Could not install packages due to an OSError: [Errno 13] Permission denied: '/nix/store/5w2swv66p5sl140my96vcipzi2vfrcxq-python3-3.8.12-env/lib/python3.8/site-packages/markupsafe'
Check the permissions.


I have a shell.nix that looks like this:

{ pkgs ? import <nixpkgs> {} }:

with import <nixpkgs> {};
let pythonEnv = python38.withPackages (ps: with ps; [
flake8
black
pynvim
ipython
python-language-server.override { pylint = null; }
pip
poetry
]);

in
pkgs.mkShell {
buildInputs = with pkgs; [
pythonEnv
];
}

In reply to @cchalc:matrix.org
I was trying to follow this video of using poetry and nix - https://www.youtube.com/watch?v=TbIHRHy7_JM

In reply to @mou_bugtracker:matrix.org
If you manage to allow poetry create venv, then all should be according to video

In reply to @mou_bugtracker:matrix.org
Can we use pyproject.toml build tool metadata to detect which one is used for dependency (if such dependency fetched in form of source), and include this tools in build dependencies?

adisbladis: as promised i made a small document on my solution for building with missed poetry build tool. I'm not insisting on this is appropriate structure or content to include in repository, but it's contains information i really like to get when encountered such problem. Feel free to use it (or not use at all) whatever way you like.

Suggestions from everyone else also welcome.

Text may contains many grammatical mistakes, so i'm really appreciate if anyone point them out.

https://gist.github.com/mou/a4f137718861082bf7da08f1176d141b