Added Quarto to packages.

packages.nix

@@ -9,7 +9,27 @@
   nixpkgs.config.allowUnfree = true;
 
   # List packages installed in system profile.
-  environment.systemPackages = with pkgs; [
+  environment.systemPackages = let
+    myPythonPackages = ps: with ps; [
+      pandas
+      statsmodels
+      scikit-learn
+      sympy
+    ];
+    myRPackages = with pkgs.rPackages; [
+      reticulate # wanted by quarto to execute Python when using R.
+      # any other RPackages - you can reuse this list for R and RStudio
+    ];
+    patchedQuarto = (pkgs.quarto.override {
+        extraPythonPackages = myPythonPackages;
+        extraRPackages = myRPackages;
+      }).overrideAttrs (oldAttrs: { # Remove this overrideAttrs patch when fixed. See https://github.com/NixOS/nixpkgs/issues/519484#issuecomment-4667477454
+      postPatch = (oldAttrs.postPatch or "") + ''
+        substituteInPlace bin/quarto.js \
+          --replace-fail "syntax-highlighting" "highlight-style"
+      '';
+    });
+  in with pkgs; [
     # System
     gsettings-desktop-schemas
     vulkan-tools
@@ -42,6 +62,14 @@
     gcc-arm-embedded
     python315
     arduino-ide
+    #### next generation of Rmarkdown for Python, Julia, R, and JS:
+    patchedQuarto
+    #### Your command-line Python:
+    (python3.withPackages (myPythonPackages))
+    #### R and RStudio:
+    (rWrapper.override {packages = myRPackages; })
+    (rstudioWrapper.override { packages = myRPackages; })
+
 
     # Communication
     (element-desktop.overrideAttrs (oldAttrs: {