feat: comma

Signed-off-by: jolheiser <john.olheiser@gmail.com>

apps/nogui/nushell/jolheiser.nu

@@ -69,6 +69,18 @@ def gomodsri [] {
   echo 'nixpkgs.lib.fileContents ./go.mod.sri'
 }
 
+# Run a command if known, otherwise run it with nix
+def , [
+    cmd: string     # The command to run
+    ...args: string # Command arguments; all flags MUST be quoted
+  ] {
+  if (not (which $cmd | is-empty)) {
+    ^$cmd ...$args
+    return
+  }
+  ^nix run $"nixpkgs#($cmd)" -- ...$args
+}
+
 ## Other ##
 $env.EDITOR = hx
 $env.config = ($env.config | upsert "shell_integration" ("WEZTERM_PANE" not-in $env and "SSH_CLIENT" not-in $env))