add missing_in_brewfile

missing_in_brewfiles.clj

@@ -0,0 +1,48 @@
+#!/usr/bin/env bb
+ (ns missing-in-brewfiles
+   (:require [babashka.fs :as fs]
+             [babashka.process :as p]
+             [clojure.set :as set]
+             [clojure.string :as str]))
+
+(def target-brewfile (fs/path (fs/xdg-config-home) "ansible" "brews"))
+
+(defn run [& args]
+  (let [{:keys [out err exit]} (apply p/sh args)]
+    (if (zero? exit)
+      (str/trim out)
+      (throw (ex-info (str/trim err) {:babashka/exit exit})))))
+
+(defn list-actual-formulas []
+  (when-let [formulae-stdout (run ["brew" "list" "-1" "--formula" "--installed-on-request"])]
+    (when-let [formulae (str/split-lines formulae-stdout)]
+      formulae)))
+
+(defn list-target-formulas []
+  (fs/read-all-lines target-brewfile))
+
+(defn missing-in-right [left right]
+  (vec (set/difference (set left) (set right))))
+
+(defn -main [& _]
+  ;; print name of target file to stderr to prevent it being copied when piping to pbcopy
+  (binding [*out* *err*]
+    (println "Installed brews missing in brewfile:" (str target-brewfile)))
+
+  (let [actual-formulas (list-actual-formulas)
+        target-formulas (list-target-formulas)
+        missing-formulas (missing-in-right actual-formulas target-formulas)]
+    (doseq [formula (sort missing-formulas)]
+      (println formula))))
+
+(when (= *file* (System/getProperty "babashka.file"))
+  (apply -main *command-line-args*))
+
+(comment
+
+
+  (-main)
+
+
+  ;;
+  )