diff --git a/home/linux/common/development.nix b/home/linux/common/development.nix
index 8cf3d1da..660c97a2 100644
--- a/home/linux/common/development.nix
+++ b/home/linux/common/development.nix
@@ -10,7 +10,7 @@
     # need to run `conda-install` before using it
     # need to run `conda-shell` before using command `conda`
     # conda is not available for MacOS
-    conda-shell
+    conda
   ];
 
   programs = {
diff --git a/home/linux/wallpapers/wallpaper-2.png b/home/linux/wallpapers/wallpaper-2.png
deleted file mode 100644
index b1140344..00000000
Binary files a/home/linux/wallpapers/wallpaper-2.png and /dev/null differ
diff --git a/home/linux/wallpapers/wallpaper.png b/home/linux/wallpapers/wallpaper.png
index c5dd3396..b1140344 100644
Binary files a/home/linux/wallpapers/wallpaper.png and b/home/linux/wallpapers/wallpaper.png differ
diff --git a/home/linux/wallpapers/wallpaper_candidate.png b/home/linux/wallpapers/wallpaper_candidate.png
new file mode 100644
index 00000000..c5dd3396
Binary files /dev/null and b/home/linux/wallpapers/wallpaper_candidate.png differ