Make rust use unstable, format code

modules/home/emacs/default.nix

@@ -50,7 +50,7 @@ in {
       dockfmt # docker
       google-java-format # java
       black # python
-      rustfmt # rust
+      unstable.rustfmt # rust
       shfmt
 
       graphviz
@@ -60,7 +60,8 @@ in {
       emacs-all-the-icons-fonts
     ];
 
-    home.activation.installDoomEmacs = lib.home-manager.hm.dag.entryAfter ["writeBoundary"] ''
+    home.activation.installDoomEmacs =
+      lib.home-manager.hm.dag.entryAfter [ "writeBoundary" ] ''
         if [ ! -d "/home/julian/.config/emacs" ]; then
            $DRY_RUN_CMD ${pkgs.git}/bin/git clone --depth=1 --single-branch "${doomRepoUrl}" "/home/julian/.config/emacs"
         fi
@@ -68,5 +69,5 @@ in {
            $DRY_RUN_CMD ${pkgs.git}/bin/git clone "${configRepoUrl}" "/home/julian/.config/doom"
         fi
       '';
-    };
+  };
 }