Added dev environments through flakes + edit and flake nushell commands

flakes/flake.nix

@@ -0,0 +1,47 @@
+{
+  description = "My rust development shell";
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    rust-overlay = {
+      url = "github:oxalica/rust-overlay";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+  outputs = {nixpkgs, ...} @ inputs: let
+    system = "x86_64-linux";
+    overlays = [(import inputs.rust-overlay)];
+    pkgs = import nixpkgs {
+      inherit system overlays;
+    };
+  in {
+    devShells."${system}" = {
+      c = pkgs.mkShell {
+        buildInputs = with pkgs; [
+          gcc
+          gnumake
+        ];
+      };
+      rust = pkgs.mkShell {
+        buildInputs = with pkgs; [
+          gcc
+          gnumake
+          rust-bin.beta.latest.default
+        ];
+      };
+      c-sharp = pkgs.mkShell {
+        buildInputs = with pkgs; [
+          dotnetCorePackages.sdk_9_0-bin
+        ]
+      }
+      rice = pkgs.mkShell {
+        buildInputs = with pkgs; [
+          cmatrix
+          asciiquarium
+          lavat
+          cbonsai
+          pipes
+        ];
+      };
+    };
+  };
+}