ps5: add flake

ps5/flake.lock

@@ -0,0 +1,27 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1772773019,
+        "narHash": "sha256-E1bxHxNKfDoQUuvriG71+f+s/NT0qWkImXsYZNFFfCs=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "aca4d95fce4914b3892661bcb80b8087293536c6",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

ps5/flake.nix

@@ -0,0 +1,22 @@
+{
+  description = "devshell for compilers/ps2";
+  
+  inputs.nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+  
+  outputs = { self, nixpkgs }:
+    let
+      system = "x86_64-linux";
+      pkgs = import nixpkgs { inherit system; };
+    in {
+      devShells.x86_64-linux.default = pkgs.mkShell {
+        buildInputs = with pkgs; [
+          flex
+          bison
+          gdb
+          cmake
+          libgcc
+          valgrind
+        ];
+      };
+    };
+}