diff --git a/shell.nix b/shell.nix
index 04b8501..c664ca9 100644
--- a/shell.nix
+++ b/shell.nix
@@ -12,6 +12,13 @@
     source ${toString ./.}/env.sh
     ${toString ./.}/tools/install.sh
 
+    # Fancy colorful PS1 to make people notice easily they're in hscloud.
+    PS1='\[\033]0;\u/hscloud:\w\007\]'
+    if type -P dircolors >/dev/null ; then
+      PS1+='\[\033[01;35m\]\u/hscloud\[\033[01;34m\] \w \$\[\033[00m\] '
+    fi
+    export PS1
+
     exec bash "$@"
   '';