install all pythons

devenv.lock

@@ -1,5 +1,25 @@
 {
   "nodes": {
+    "all-python": {
+      "inputs": {
+        "flake-compat": "flake-compat",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1722978926,
+        "owner": "cachix",
+        "repo": "nixpkgs-python",
+        "rev": "7c550bca7e6cf95898e32eb2173efe7ebb447460",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "repo": "nixpkgs-python",
+        "type": "github"
+      }
+    },
     "devenv": {
       "locked": {
         "dir": "src/modules",
@@ -31,6 +51,21 @@
         "type": "github"
       }
     },
+    "flake-compat_2": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1696426674,
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "type": "github"
+      },
+      "original": {
+        "owner": "edolstra",
+        "repo": "flake-compat",
+        "type": "github"
+      }
+    },
     "gitignore": {
       "inputs": {
         "nixpkgs": [
@@ -83,7 +118,7 @@
     },
     "pre-commit-hooks": {
       "inputs": {
-        "flake-compat": "flake-compat",
+        "flake-compat": "flake-compat_2",
         "gitignore": "gitignore",
         "nixpkgs": [
           "nixpkgs"
@@ -105,6 +140,7 @@
     },
     "root": {
       "inputs": {
+        "all-python": "all-python",
         "devenv": "devenv",
         "nixpkgs": "nixpkgs",
         "pre-commit-hooks": "pre-commit-hooks"

devenv.nix

@@ -1,11 +1,17 @@
 { pkgs, lib, config, inputs, ... }:
 
-{
+let
+  system = pkgs.stdenv.system;
+  python38 = inputs.all-python.packages.${system}."3.8";
+  python39 = inputs.all-python.packages.${system}."3.9";
+  python310 = inputs.all-python.packages.${system}."3.10";
+  python312 = inputs.all-python.packages.${system}."3.12";
+in {
   # https://devenv.sh/basics/
   env.GREET = "devenv";
 
   # https://devenv.sh/packages/
-  packages = [ pkgs.git pkgs.just pkgs.libffi];
+  packages = [ pkgs.git pkgs.just pkgs.libffi python38 python39 python310 python312 pkgs.uv];
 
   # https://devenv.sh/languages/
   languages.python.enable = true;

devenv.yaml

@@ -1,15 +1,8 @@
-# yaml-language-server: $schema=https://devenv.sh/devenv.schema.json
 inputs:
   nixpkgs:
     url: github:cachix/devenv-nixpkgs/rolling
-
-# If you're using non-OSS software, you can set allowUnfree to true.
-# allowUnfree: true
-
-# If you're willing to use a package that's vulnerable
-# permittedInsecurePackages:
-#  - "openssl-1.1.1w"
-
-# If you have more than one devenv you can merge them
-#imports:
-# - ./backend
+  all-python:
+    url: github:cachix/nixpkgs-python
+    inputs:
+      nixpkgs:
+        follows: nixpkgs

tox-uv.ini

@@ -23,6 +23,8 @@ deps =
     coverage
 setenv =
     COVERAGE_FILE=.coverage.{envname}
+allowlist_externals =
+  uv
 
 [testenv:coverage]
 basepython = python3.12