Wrap freecad with gmsh and calculix to run FEM

nixos/graphical.nix

@@ -34,6 +34,30 @@ let start-plasma-shortcut = pkgs.writeScriptBin "desktop" ''
         done
       '';
     };
+
+    freecad-fem = pkgs.stdenv.mkDerivation {
+      name = "freecad-fem";
+      version = pkgs.freecad-wayland.version;
+
+      src = pkgs.freecad-wayland;
+      buildInputs = [ pkgs.makeWrapper ];
+      buildPhase = ''
+        cp -r $src $out
+        chmod -R u+w $out
+
+        wrapProgram $out/bin/FreeCAD \
+          --set PATH ${pkgs.lib.makeBinPath [ pkgs.gmsh pkgs.calculix pkgs.which ]}
+      '';
+    };
+
+    # freecad-fem = pkgs.freecad-wayland.overrideAttrs (final: prev: {
+    #   # enable packages needed for FEM
+
+    #   postFixup = ''
+    #     wrapProgram $out/bin/freecad \
+    #       --set PATH ${pkgs.lib.makeBinPath [ pkgs.gmsh pkgs.calculix ]}
+    #   '';
+    # });
 in
 {
   services.xserver = {
@@ -89,6 +113,7 @@ in
     remmina
     libreoffice
     kicad-patch
+    freecad-fem
   ]) ++ (with pkgs_2405; [
     firefox
   ]);