Add LICENSE

Turns out this actually is already implemented upstream.

LICENSE

@@ -0,0 +1,22 @@
+MIT License
+
+Copyright (c) 2023 xeals
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

flake.nix

@@ -11,19 +11,24 @@
       let
         pkgs = import nixpkgs { inherit system; };
         zig = pkgs.zig_0_11;
-        buildZigPackage = import ./nix/build-zig-package.nix {
-          inherit (pkgs) stdenv;
-          inherit zig;
-        };
       in
       {
         devShells.default = pkgs.mkShellNoCC {
           buildInputs = [ zig pkgs.zls ];
         };
 
-        packages.default = buildZigPackage {
+        packages.default = pkgs.stdenv.mkDerivation {
           name = "aoc23";
           src = pkgs.nix-gitignore.gitignoreSource [ ] ./.;
+
+          nativeBuildInputs = [ zig.hook ];
+
+          meta = {
+            description = "Advent of Code 2023";
+            homepage = "https://git.xeal.me/xeals/aoc23";
+            license = nixpkgs.lib.licenses.mit;
+            inherit (zig.meta) platforms;
+          };
         };
       });
 }

nix/build-zig-package.nix

@@ -1,57 +0,0 @@
-{ stdenv
-, zig
-}:
-
-{ buildInputs ? [ ]
-, nativeBuildInputs ? [ ]
-, optimize ? "ReleaseSafe"
-, meta ? { }
-, ...
-}@args:
-
-stdenv.mkDerivation (args // {
-  nativeBuildInputs = nativeBuildInputs ++ [
-    zig
-  ];
-
-  buildInputs = buildInputs;
-
-  strictDeps = true;
-
-  configurePhase = args.configurePhase or ''
-    runHook preConfigure
-    runHook postConfigure
-  '';
-
-  ZIGFLAGS = args.ZIGFLAGS or [
-    "-Doptimize=${optimize}"
-  ];
-
-  # https://github.com/ziglang/zig/issues/6810 requires setting XDG_CACHE_HOME
-  # in all zig build phases. --cache-dir and --global-cache-dir do not prevent
-  # the builder from attempting to create the XDG cache.
-
-  buildPhase = args.buildPhase or ''
-    runHook preBuild
-    XDG_CACHE_HOME=_cache zig build $ZIGFLAGS
-    runHook postBuild
-  '';
-
-  doCheck = args.doCheck or true;
-  checkPhase = args.checkPhase or ''
-    runHook preCheck
-    XDG_CACHE_HOME=_cache zig build test $ZIGFLAGS
-    runHook postCheck
-  '';
-
-  installPhase = args.installPhase or ''
-    runHook preInstall
-    XDG_CACHE_HOME=_cache zig build install --prefix $out $ZIGFLAGS
-    runHook postInstall
-  '';
-
-  meta = {
-    # default to Zig's platforms
-    platforms = zig.meta.platforms;
-  } // meta;
-})