[+] Create nix-git-update command

scripts/bashrc-nix.sh

@@ -1,3 +1,22 @@
 alias rebuild="nixos-rebuild switch"
 alias gc="nix-collect-garbage -d"
 alias rebuild-gc="rebuild; gc"
+
+# Update git
+nix-git-update() {
+    # Make sure there aren't any other changes
+    if git diff-index --quiet HEAD --; then
+        # No changes
+        pushd /etc/nixos
+        update-nix-fetchgit *.nix
+        rebuild-gc
+        git add *.nix
+        git commit -m "[U] Update fetchgit refs"
+        git push
+        popd
+    else
+        # Changes
+        echo "Error: There are uncommitted changes"
+        git status
+    fi
+}