diff --git a/.gitignore b/.gitignore
index 0840a76..87ee5fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 .cache
 .vscode
 qemu
+.Rhistory
diff --git a/flake.nix b/flake.nix
index daa8504..73d8404 100644
--- a/flake.nix
+++ b/flake.nix
@@ -47,6 +47,9 @@
             graphviz
             rstudioWrapper
             R
+            # dependencies for mosaic
+            freetype
+            fontconfig
           ];
 
           shellHook = ''