init https://github.com/NixOS/templates/tree/master/python

flake.nix

@@ -0,0 +1,29 @@
+{
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+  inputs.poetry2nix.url = "github:nix-community/poetry2nix";
+
+  outputs = { self, nixpkgs, poetry2nix }:
+    let
+      supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
+      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+      pkgs = forAllSystems (system: nixpkgs.legacyPackages.${system});
+    in
+    {
+      packages = forAllSystems (system: let
+        inherit (poetry2nix.lib.mkPoetry2Nix { pkgs = pkgs.${system}; }) mkPoetryApplication;
+      in {
+        default = mkPoetryApplication { projectDir = self; };
+      });
+
+      devShells = forAllSystems (system: let
+        inherit (poetry2nix.lib.mkPoetry2Nix { pkgs = pkgs.${system}; }) mkPoetryEnv;
+      in {
+        default = pkgs.${system}.mkShellNoCC {
+          packages = with pkgs.${system}; [
+            (mkPoetryEnv { projectDir = self; })
+            poetry
+          ];
+        };
+      });
+    };
+}

pyproject.toml

@@ -0,0 +1,17 @@
+[tool.poetry]
+name = "sample-project"
+version = "0.1.0"
+description = ""
+authors = ["Author Name <author@example.com>"]
+# readme = "README.md"
+# license = "BSD"
+packages = [
+  { include = "sample_package" }
+]
+
+[tool.poetry.dependencies]
+python = "^3.10"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"