feat(third_party/lisp): Add derivation for cl-ansi-text

third_party/lisp/cl-ansi-text.nix

@@ -0,0 +1,19 @@
+# Enables ANSI colors for printing.
+{ pkgs, ... }:
+
+let src = builtins.fetchGit {
+  url = "https://github.com/pnathan/cl-ansi-text.git";
+  rev = "257a5f19a2dc92d22f8fd772c0a78923b99b36a8";
+};
+in pkgs.nix.buildLisp.library {
+  name = "cl-ansi-text";
+  deps = with pkgs.third_party.lisp; [
+    alexandria
+    cl-colors2
+  ];
+
+  srcs = map (f: src + ("/src/" + f)) [
+    "cl-ansi-text.lisp"
+    "define-colors.lisp"
+  ];
+}