add rust-dev

components/nix/rust-dev.nix

@@ -0,0 +1,50 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+
+with lib;
+
+let
+  rustChannel = config.programs.rust.channel;
+  rustVersion = config.programs.rust.version;
+in
+{
+  options.components.rust = {
+    enable = mkOption {
+      type = types.bool;
+      default = true;
+      description = "Enable Rust programming language support.";
+    };
+
+    repl = mkOption {
+      type = types.bool;
+      default = true;
+      description = "Enable the evcxr repl for `rust` command.";
+    };
+
+    channel = mkOption {
+      type = types.str;
+      default = "stable";
+      description = "The Rust release channel to use (e.g., stable, beta, nightly).";
+    };
+
+    version = mkOption {
+      type = types.str;
+      default = "latest";
+      description = "The specific version of Rust to use. Use 'latest' for the latest stable release.";
+    };
+  };
+
+  config = mkIf config.components.rust.enable {
+    environment.systemPackages = [
+      pkgs.rustup
+    ] ++ (if config.components.rust.repl then [ pkgs.evcxr ] else [ ]);
+
+    environment.shellAliases = mkIf config.components.rust.repl {
+      rust = "evcxr";
+    };
+  };
+}