diff --git a/home/darwin/shell.nix b/home/darwin/shell.nix
index 83fc3900..dc84256b 100644
--- a/home/darwin/shell.nix
+++ b/home/darwin/shell.nix
@@ -1,9 +1,9 @@
 {lib, ...}: let
-  envExtra = lib.mkAfter ''
+  envExtra = ''
     export PATH="$PATH:/opt/homebrew/bin:/usr/local/bin"
   '';
   # copied from the content generated by `conda init bash`
-  initExtra = lib.mkAfter ''
+  initExtra = ''
     arch=$(uname -m)
 
     if [ "aarch64" = "$arch" ] ||  [ "arm64" = "$arch" ]; then
@@ -28,7 +28,7 @@ in {
   # in /opt/homebrew for Apple Silicon and /usr/local for Rosetta 2 to coexist and use bottles.
   programs.bash = {
     enable = true;
-    bashrcExtra = envExtra + initExtra;
+    bashrcExtra = lib.mkAfter (envExtra + initExtra);
   };
   programs.zsh = {
     enable = true;