Do not install rust on neelix.

nix/configuration/hosts/odo/default.nix

@@ -47,6 +47,7 @@
   me.lvfs.enable = true;
   me.media.enable = true;
   me.python.enable = true;
-  me.sway.enable = true;
   me.qemu.enable = true;
+  me.rust.enable = true;
+  me.sway.enable = true;
 }

nix/configuration/roles/rust/default.nix

@@ -8,31 +8,46 @@
 {
   imports = [ ];
 
-  environment.systemPackages = with pkgs; [
+  options.me = {
-    rustup
+    rust.enable = lib.mkOption {
-    lldb # for lldb-vscode
+      type = lib.types.bool;
-    musl # for building static binaries
+      default = false;
-    rust-analyzer
+      example = true;
-    cargo-semver-checks
+      description = "Whether we want to install rust.";
-    # ? cargo-bloat
-    # ? cargo-outdated
-    # ? cargo-public-api
-  ];
-
-  home-manager.users.talexander =
-    { pkgs, ... }:
-    {
-      home.file = {
-        ".cargo/config.toml" = {
-          source = ./files/cargo_config.toml;
-        };
-        # # TODO: Figure out what to do with credentials.
-        # ".cargo/credentials.toml" = {
-        #   source = ./files/cargo_credentials.toml;
-        # };
-      };
     };
+  };
 
+  config = lib.mkIf config.me.rust.enable (
+    lib.mkMerge [
+      {
+        environment.systemPackages = with pkgs; [
+          rustup
+          lldb # for lldb-vscode
+          musl # for building static binaries
+          rust-analyzer
+          cargo-semver-checks
+          # ? cargo-bloat
+          # ? cargo-outdated
+          # ? cargo-public-api
+        ];
+
+        home-manager.users.talexander =
+          { pkgs, ... }:
+          {
+            home.file = {
+              ".cargo/config.toml" = {
+                source = ./files/cargo_config.toml;
+              };
+              # # TODO: Figure out what to do with credentials.
+              # ".cargo/credentials.toml" = {
+              #   source = ./files/cargo_credentials.toml;
+              # };
+            };
+          };
+
+      }
+    ]
+  );
 }
 
 # TODO: Install clippy, cranelift, rust-src