Revert "Allow running standalone single-file scripts using Mill (#5820)"

This reverts commit baf1b7d.

Author: lihaoyi

.editorconfig

@@ -18,12 +18,6 @@ indent_size = 2
 ktlint_code_style = intellij_idea
 ktlint_standard_no-wildcard-imports = disabled
 
-[example/kotlinlib/basic/5-single-file/**/*]
-ktlint = disabled
-
-[example/kotlinlib/module/1-single-file/**/*]
-ktlint = disabled
-
 [example/kotlinlib/linting/**/*]
 ktlint = disabled
 

build.mill

@@ -1,4 +1,4 @@
-//| mill-version: 1.0.4-38-cbb9e8
+//| mill-version: 1.0.4-26-a6e4c1
 //| mill-jvm-opts: ["-XX:NonProfiledCodeHeapSize=250m", "-XX:ReservedCodeCacheSize=500m"]
 //| mill-opts: ["--jobs=0.5C"]
 

core/constants/src/mill/constants/Util.java

@@ -5,8 +5,6 @@
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.nio.charset.StandardCharsets;
-import java.nio.file.Files;
-import java.nio.file.Path;
 import java.security.MessageDigest;
 import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
@@ -86,20 +84,15 @@ private static String throwBuildHeaderError(
         + ": " + line + "\n" + msg);
   }
 
-  public static String readBuildHeader(Path buildFile, String errorFileName) {
-    return readBuildHeader(buildFile, errorFileName, false);
-  }
-
-  public static String readBuildHeader(
-      Path buildFile, String errorFileName, boolean allowNonBuild) {
+  public static String readBuildHeader(java.nio.file.Path buildFile, String errorFileName) {
     try {
-      java.util.List<String> lines = Files.readAllLines(buildFile);
+      java.util.List<String> lines = java.nio.file.Files.readAllLines(buildFile);
       boolean readingBuildHeader = true;
       java.util.List<String> output = new ArrayList<>();
       for (int i = 0; i < lines.size(); i++) {
         String line = lines.get(i);
         if (!line.startsWith("//|")) readingBuildHeader = false;
-        else if (!allowNonBuild && !buildFile.getFileName().toString().startsWith("build.")) {
+        else if (!buildFile.getFileName().toString().startsWith("build.")) {
           throwBuildHeaderError(
               errorFileName,
               i,

core/internal/cli/package.mill

@@ -9,5 +9,8 @@ import millbuild.*
 object `package` extends MillPublishScalaModule {
   def moduleDeps = Seq(build.libs.util)
 
-  def mvnDeps = Seq(Deps.mainargs)
+  def mvnDeps = Seq(
+    Deps.millModuledefs,
+    Deps.mainargs
+  )
 }

core/internal/cli/src/mill/internal/MillCliConfig.scala

@@ -128,11 +128,6 @@ case class MillCliConfig(
       doc = """Runs Mill in tab-completion mode"""
     )
     tabComplete: Flag = Flag(),
-    @arg(
-      short = 'f',
-      doc = """Select the build.mill file or Java/Scala/Kotlin script file to run"""
-    )
-    file: Option[os.Path] = None,
 
     // ==================== DEPRECATED CLI FLAGS ====================
     @arg(hidden = true, short = 'h', doc = "Unsupported")