Add nativeImage build config

aoc/src/dev/ctsk/aoc/days/Day06.scala

@@ -4,10 +4,9 @@ import dev.ctsk.aoc._
 import dev.ctsk.aoc.Direction._
 import scala.annotation.tailrec
 import scala.collection.mutable
-import scala.collection.parallel.CollectionConverters._
 
 object Day06 extends Solver(6):
-  def analyse(grid: Grid[Char]): Array[Array[Array[Int]]] =
+  private def analyse(grid: Grid[Char]): Array[Array[Array[Int]]] =
     val skipMap = Array.fill(grid.height, grid.width, 4)(-1)
     for
       obstacle <- grid.find(_ == '#')
@@ -43,9 +42,7 @@ object Day06 extends Solver(6):
             val next = cur.step
             grid(next.pos) match
               case Some('#') =>
-                if seen.contains(cur) then return true
+                if seen.add(cur) then rec(cur.turnRight) else true
-                seen += cur
-                rec(cur.turnRight)
               case Some(_) =>
                 if next.pos == obstacle then return rec(cur.turnRight)
                 if next.pos.x == obstacle.x || next.pos.y == obstacle.y

build.mill

@@ -2,10 +2,25 @@ package build
 
 import mill._, scalalib._
 
-object aoc extends ScalaModule {
+import $ivy.`io.github.alexarchambault.mill::mill-native-image::0.1.29`
+import io.github.alexarchambault.millnativeimage.NativeImage
+
+object aoc extends ScalaModule with NativeImage {
   def scalaVersion = "3.5.2"
   def ivyDeps = Agg(
     ivy"com.lihaoyi::os-lib:0.11.3",
     ivy"org.scala-lang.modules::scala-parallel-collections:1.0.4"
   )
-}
+
+
+  def nativeImageName         = "aoc"
+  def nativeImageMainClass    = "dev.ctsk.aoc.main"
+  def nativeImageClassPath    = runClasspath()
+  def nativeImageGraalVmJvmId = "graalvm-java23"
+  def nativeImageOptions = Seq(
+    "--initialize-at-build-time",
+    "--no-fallback",
+    "--enable-url-protocols=http,https",
+    "-Djdk.http.auth.tunneling.disabledSchemes=",
+  )
+}