Update nix develop environment

dev_env_builder.nix

@@ -1,40 +1,43 @@
-{ nixpkgs
-, system
-, cudaSupport
-, rocmSupport
-}:
+{ nixpkgs, system, cudaSupport ? false, rocmSupport ? false
+, vulkanSupport ? false }:
 let
   pkgs = import nixpkgs {
     inherit system;
     config.allowUnfree = true;
     config.cudaSupport = cudaSupport;
     config.rocmSupport = rocmSupport;
+    config.vulkanSupport = vulkanSupport;
   };
-  pythonPackages = pkgs.python3Packages;
-in
-pkgs.mkShell rec {
+in pkgs.mkShell {
   name = "impureEvoXPythonEnv";
   venvDir = "./.venv";
-  buildInputs = with pythonPackages; [
-    python
-    # This executes some shell code to initialize a venv in $venvDir before
-    # dropping into the shell
-    venvShellHook
+  nativeBuildInputs = with pkgs; [
+    (python313.withPackages (py-pkgs:
+      with py-pkgs; [
+        # This executes some shell code to initialize a venv in $venvDir before
+        # dropping into the shell
+        venvShellHook
 
-    # Those are dependencies that we would like to use from nixpkgs, which will
-    # add them to PYTHONPATH and thus make them accessible from within the venv.
-    numpy
-    torch
-    torchvision
-  ] ++ (with pkgs; [
+        # Those are dependencies that we would like to use from nixpkgs, which will
+        # add them to PYTHONPATH and thus make them accessible from within the venv.
+        numpy
+        (if cudaSupport then
+          torchWithCuda
+        else if rocmSupport then
+          torchWithRocm
+        else if vulkanSupport then
+          torchWithVulkan
+        else
+          torch)
+        torchvision
+      ]))
     pre-commit
     ruff
-  ]);
+  ];
 
   # Run this command, only after creating the virtual environment
   postVenvCreation = ''
     unset SOURCE_DATE_EPOCH
-    pip install -e .
   '';
 
   # Now we can execute any commands within the virtual environment.
@@ -43,5 +46,4 @@ pkgs.mkShell rec {
     # allow pip to install wheels
     unset SOURCE_DATE_EPOCH
   '';
-
 }

flake.nix

@@ -1,7 +1,7 @@
 {
   description = "evox";
   inputs = {
-    nixpkgs.url = "nixpkgs/nixos-24.11";
+    nixpkgs.url = "nixpkgs/nixos-unstable";
     utils.url = "github:numtide/flake-utils";
   };
 
@@ -11,15 +11,24 @@
     eachSystem (with system; [ x86_64-linux ]) (system:
       let
         builder = import ./dev_env_builder.nix;
-        cuda-env = builder { inherit system nixpkgs; cudaSupport = true; rocmSupport = false; };
-        rocm-env = builder { inherit system nixpkgs; cudaSupport = false; rocmSupport = true; };
-        cpu-env = builder { inherit system nixpkgs; cudaSupport = false; rocmSupport = false; };
-      in
-      {
+        cuda-env = builder {
+          inherit system nixpkgs;
+          cudaSupport = true;
+        };
+        rocm-env = builder {
+          inherit system nixpkgs;
+          rocmSupport = true;
+        };
+        vulkan-env = builder {
+          inherit system nixpkgs;
+          vulkanSupport = true;
+        };
+        cpu-env = builder { inherit system nixpkgs; };
+      in {
         devShells.default = cpu-env;
         devShells.cpu = cpu-env;
         devShells.cuda = cuda-env;
         devShells.rocm = rocm-env;
-      }
-    );
+        devShells.vulkan = vulkan-env;
+      });
 }