Add jupyter template

jupyter/.envrc

@@ -0,0 +1 @@
+use flake

jupyter/flake.nix

@@ -0,0 +1,25 @@
+{
+  description = "A Nix-flake-based Python development environment";
+
+  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1.*.tar.gz";
+
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    supportedSystems = ["x86_64-linux" "aarch64-linux" "x86_64-darwin" "aarch64-darwin"];
+    forEachSupportedSystem = f:
+      nixpkgs.lib.genAttrs supportedSystems (system:
+        f {
+          pkgs = import nixpkgs {inherit system;};
+        });
+  in {
+    devShells = forEachSupportedSystem ({pkgs}: {
+      default = pkgs.mkShell {
+        packages = with pkgs;
+          [python311 virtualenv]
+          ++ (with pkgs.python311Packages; [pip jupyter pandas numpy matplotlib]);
+      };
+    });
+  };
+}