From 514c48fdde64659bb66aa35b50f0339275b3722a Mon Sep 17 00:00:00 2001
From: Vincent Ambo <tazjin@google.com>
Date: Mon, 9 Dec 2019 11:44:21 +0000
Subject: feat(tools): Set up Advent of Code 2019 scaffolding

---
 tools/aoc2019/default.nix | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 tools/aoc2019/default.nix

(limited to 'tools/aoc2019/default.nix')

diff --git a/tools/aoc2019/default.nix b/tools/aoc2019/default.nix
new file mode 100644
index 000000000000..3c10ea88b1c8
--- /dev/null
+++ b/tools/aoc2019/default.nix
@@ -0,0 +1,22 @@
+# Solutions for Advent of Code 2019, written in Emacs Lisp.
+#
+# For each day a new file is created as "solution-day$n.el".
+{ pkgs, ... }:
+
+let
+  inherit (builtins) attrNames filter head listToAttrs match readDir;
+  dir = readDir ./.;
+  matchSolution = match "solution-(.*)\.el";
+  isSolution = f: (matchSolution f) != null;
+  getDay = f: head (matchSolution f);
+
+  solutionFiles = filter (e: dir."${e}" == "regular" && isSolution e) (attrNames dir);
+  solutions = map (f: let day = getDay f; in {
+    name = day;
+    value = pkgs.writeElispBin {
+      name = "solution-${day}";
+      deps = p: with p; [ dash s ht ];
+      src = ./. + ("/" + f);
+    };
+  }) solutionFiles;
+in listToAttrs solutions
-- 
cgit 1.4.1