feature(deven): add devenv for ml exercises

.gitignore

@@ -1,3 +1,8 @@
+# virtualenv
 .venv
-.swp
 .devenv
+# vim
+.swp
+# jupyter notebooks
+.ipynb_checkpoints
+*.dot

ML/aufgaben/devenv.lock

@@ -0,0 +1,65 @@
+{
+  "nodes": {
+    "devenv": {
+      "locked": {
+        "dir": "src/modules",
+        "lastModified": 1777372895,
+        "narHash": "sha256-PGesjpeDbEPigEP7tdRw8Sm0mmOmonUdOOthBY+nhJA=",
+        "owner": "cachix",
+        "repo": "devenv",
+        "rev": "cb344e4a5ab9241ae49739352c24268d5f8be13b",
+        "type": "github"
+      },
+      "original": {
+        "dir": "src/modules",
+        "owner": "cachix",
+        "repo": "devenv",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "inputs": {
+        "nixpkgs-src": "nixpkgs-src"
+      },
+      "locked": {
+        "lastModified": 1776852779,
+        "narHash": "sha256-WwO/ITisCXwyiRgtktZgv3iGhAGO+IB5Av4kKCwezR0=",
+        "owner": "cachix",
+        "repo": "devenv-nixpkgs",
+        "rev": "ec3063523dcd911aeadb50faa589f237cdab5853",
+        "type": "github"
+      },
+      "original": {
+        "owner": "cachix",
+        "ref": "rolling",
+        "repo": "devenv-nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-src": {
+      "flake": false,
+      "locked": {
+        "lastModified": 1776329215,
+        "narHash": "sha256-a8BYi3mzoJ/AcJP8UldOx8emoPRLeWqALZWu4ZvjPXw=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b86751bc4085f48661017fa226dee99fab6c651b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixpkgs-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "devenv": "devenv",
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

ML/aufgaben/devenv.nix

@@ -0,0 +1,20 @@
+{ pkgs, lib, config, ... }:
+
+{
+  languages.python = {
+    enable = true;
+    venv.enable = true;
+    venv.requirements = ''
+      ipython
+      jupyter
+      matplotlib
+      numpy
+      scikit-learn
+    '';
+  };
+
+  packages = [
+    pkgs.graphviz
+    pkgs.zsh
+  ];
+}