and `inbreeding watch` command

output sample

let's say the current seed is "b239e48345ac457b492cc164f58c010d07292c88e4791e607d91796baec7f334" and the experiment has ID fixed:0-single:3-5-50-10240, and that we are watching both the creation of the first experiment and a few runs, e.g.

• 002d8de28913efbf7dbd111b817ae901fee2d47882ba7aa76d293c2d95d9652c
• 015672b37c9cf1a6b475937987294f9a503a922ffbcfdfc5d18ef839fac91b8c
• 080a51a17ac43fcbdf08f77f3bc993983fef589bd9672f04382af4b16dd09b13

then the output would look like

b239e48  fixed:0-single:3-5-50-10240            at 2024-05-30 15:24:12
b239e48  fixed:0-single:3-5-50-10240  002d8de   at 2024-05-30 15:24:14
b239e48  fixed:0-single:3-5-50-10240  015672b   at 2024-05-30 15:24:16
b239e48  fixed:0-single:3-5-50-10240  080a51a   at 2024-05-30 15:24:18

bins/inbreeding/watch.nu

@@ -3,10 +3,17 @@ use path.nu [ "remove-cache-prefix" ]
 
 export def main [] {
     watch $CACHE { |op, path, new_path|
-        if $op == "Create" {
-            let now = date now | format date "%Y-%m-%d %H:%M:%S"
-            let p = $path | remove-cache-prefix | parse "{seed}/{exp}/{id}" | into record
-            $"($p.seed | str substring 0..7)  ($p.exp)  ($p.id | str substring 0..7) at ($now)"
+        if $op != "Create" {
+            return
         }
+
+        let now = date now | format date "%Y-%m-%d %H:%M:%S"
+        let p = $path | remove-cache-prefix | parse "{seed}/{exp}/{id}" | into record
+
+        if $p == {} {
+            return $"($path | remove-cache-prefix) created"
+        }
+
+        $"($p.seed | str substring 0..7)  ($p.exp)  ($p.id | str substring 0..7) at ($now)"
     }
 }