home-environments: radio: Update :system fish abbreviation to edit the declaration of whatever system is currently in use

files/fish/functions/fish_custom_functions.fish

@@ -42,6 +42,10 @@ function bang-bang-k
     echo $arr[$k]
 end
 
+function edit-system
+    echo "~/projects/code/scm/radix/ && $EDITOR operating-systems/$(hostname).scm"
+end
+
 function bang-dollar
     string replace -ra '.* ' '' "$history[1]"
 end

home-environments/radio.scm

@@ -342,8 +342,7 @@
                              (abbreviation
                               (name ":system")
                               (expansion
-                               (format #f "~a/scm/radix && $EDITOR buer.scm"
-                                          code-projects)))
+                               (fish-function "edit-system")))
                              (abbreviation
                               (name ":home")
                               (expansion