Conditional completer (use fish on linux)

.config/nushell/config.nu

@@ -181,6 +181,11 @@ let carapace_completer = {|spans|
     carapace $spans.0 nushell $spans | from json
 }
 
+let fish_completer = {|spans|
+    fish --command $'complete "--do-complete=($spans | str join " ")"'
+    | $"value(char tab)description(char newline)" + $in
+    | from tsv --flexible --no-infer
+}
 
 # The default config record. This is where much of your global configuration is setup.
 let-env config = {
@@ -278,7 +283,7 @@ let-env config = {
     external: {
       enable: true # set to false to prevent nushell looking into $env.PATH to find more suggestions, `false` recommended for WSL users as this look up my be very slow
       max_results: 50 # setting it lower can improve completion performance at the cost of omitting some options
-      completer: $carapace_completer # check 'carapace_completer' above as an example
+      completer: (if ("OS" not-in $env) or (not $env.OS == "Windows_NT") { $fish_completer } else { $carapace_completer }) # check 'carapace_completer' above as an example
     }
   }
   filesize: {