Anything greater than an hour now in XhYm format

fish_prompt.fish

@@ -661,10 +661,14 @@ function __bobthefish_prompt_aws_vault_profile -S -d 'Show AWS Vault profile'
     set -l now (date --utc +%s)
     set -l expiry (date -d "$AWS_SESSION_EXPIRATION" +%s)
     set -l diff_mins (math "floor(( $expiry - $now ) / 60)")
-    [ "$diff_mins" -lt 0 ]
-    and set -l diff_mins 0
 
-    set -l segment $profile " (" $diff_mins "m)"
+    set -l diff_time $diff_mins"m"
+    [ $diff_mins -le 0 ]
+    and set -l diff_time "0m"
+    [ $diff_mins -ge 60 ]
+    and set -l diff_time (math "floor($diff_mins / 60)")"h"(math "$diff_mins % 60")"m"
+
+    set -l segment $profile " (" $diff_time ")"
 
     __bobthefish_start_segment $color_aws_vault
     echo -ns $segment " "