From 9431364fb381da8c92a2a4e1603f95c69b694374 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 23 Mar 2026 22:49:00 +0000
Subject: [PATCH] Update Mill to 1.1.4: rename build files, update launchers,
 ivy -> mvn

Co-authored-by: alexarchambault <7063723+alexarchambault@users.noreply.github.com>
Agent-Logs-Url: https://github.com/coursier/dependency/sessions/d88cdef6-4775-42cd-9f2e-3f3ee9566eeb
---
 .mill-version          |   1 -
 build.sc => build.mill |  14 +-
 deps.sc => deps.mill   |  10 +-
 mill                   | 251 ++++++++++++++++---------
 mill.bat               | 405 ++++++++++++++++++++++++++++++-----------
 5 files changed, 469 insertions(+), 212 deletions(-)
 delete mode 100644 .mill-version
 rename build.sc => build.mill (94%)
 rename deps.sc => deps.mill (50%)

diff --git a/.mill-version b/.mill-version
deleted file mode 100644
index 26acbf0..0000000
--- a/.mill-version
+++ /dev/null
@@ -1 +0,0 @@
-0.12.2
diff --git a/build.sc b/build.mill
similarity index 94%
rename from build.sc
rename to build.mill
index 97efcaa..6866bb1 100644
--- a/build.sc
+++ b/build.mill
@@ -1,5 +1,6 @@
-import $ivy.`com.github.lolgab::mill-mima::0.0.24`
-import $ivy.`de.tototec::de.tobiasroeser.mill.vcs.version::0.4.0`
+//| mill-version: 1.1.4
+import $dep.`com.github.lolgab::mill-mima::0.2.1`
+import $dep.`de.tototec::de.tobiasroeser.mill.vcs.version::0.4.1`
 import $file.deps, deps.{Deps, Scala, Versions}
 
 import java.io.File
@@ -76,15 +77,6 @@ trait DependencyMima extends Mima {
       .sorted
       .map(_.repr)
   }
-  // Remove once 0.3.0 is out
-  def mimaPreviousArtifacts = T {
-    val versions     = mimaPreviousVersions()
-    val organization = pomSettings().organization
-    val artifactId0  = artifactId()
-    Agg.from(
-      versions.map(version => ivy"$organization:$artifactId0:$version")
-    )
-  }
 }
 
 private def scalaDirNames(sv: String): Seq[String] = {
diff --git a/deps.sc b/deps.mill
similarity index 50%
rename from deps.sc
rename to deps.mill
index 3c62f08..745b66b 100644
--- a/deps.sc
+++ b/deps.mill
@@ -8,11 +8,11 @@ object Scala {
 }
 
 object Deps {
-  def expecty = ivy"com.eed3si9n.expecty::expecty::0.17.0"
-  def interface = ivy"io.get-coursier:interface:1.0.28"
-  def munit = ivy"org.scalameta::munit::1.0.4"
-  def pprint = ivy"com.lihaoyi::pprint::0.9.0"
-  def scalaReflect(sv: String) = ivy"org.scala-lang:scala-reflect:$sv"
+  def expecty = mvn"com.eed3si9n.expecty::expecty::0.17.0"
+  def interface = mvn"io.get-coursier:interface:1.0.28"
+  def munit = mvn"org.scalameta::munit::1.0.4"
+  def pprint = mvn"com.lihaoyi::pprint::0.9.0"
+  def scalaReflect(sv: String) = mvn"org.scala-lang:scala-reflect:$sv"
 }
 
 object Versions {
diff --git a/mill b/mill
index dedcedf..77380eb 100755
--- a/mill
+++ b/mill
@@ -1,120 +1,199 @@
 #!/usr/bin/env sh
 
-# This is a wrapper script, that automatically download mill from GitHub release pages
-# You can give the required mill version with --mill-version parameter
-# If no version is given, it falls back to the value of DEFAULT_MILL_VERSION
-#
-# Project page: https://github.com/lefou/millw
-#
-# If you want to improve this script, please also contribute your changes back!
-#
-# Licensed under the Apache License, Version 2.0
+set -e
 
+if [ -z "${DEFAULT_MILL_VERSION}" ] ; then DEFAULT_MILL_VERSION="1.1.3"; fi
 
-DEFAULT_MILL_VERSION=0.9.5
+if [ -z "${GITHUB_RELEASE_CDN}" ] ; then GITHUB_RELEASE_CDN=""; fi
 
-set -e
+if [ -z "$MILL_MAIN_CLI" ] ; then MILL_MAIN_CLI="${0}"; fi
 
 MILL_REPO_URL="https://github.com/com-lihaoyi/mill"
 
-# Explicit commandline argument takes precedence over all other methods
-if [ "x$1" = "x--mill-version" ] ; then
-  shift
-  if [ "x$1" != "x" ] ; then
-    MILL_VERSION="$1"
-    shift
-  else
-    echo "You specified --mill-version without a version."
-    echo "Please provide a version that matches one provided on"
-    echo "${MILL_REPO_URL}/releases"
-    false
-  fi
+MILL_BUILD_SCRIPT=""
+
+if [ -f "build.mill" ] ; then
+  MILL_BUILD_SCRIPT="build.mill"
+elif [ -f "build.mill.scala" ] ; then
+  MILL_BUILD_SCRIPT="build.mill.scala"
+elif [ -f "build.sc" ] ; then
+  MILL_BUILD_SCRIPT="build.sc"
 fi
 
-# Please note, that if a MILL_VERSION is already set in the environment,
-# We reuse it's value and skip searching for a value.
+# `s/.*://`:
+#   This is a greedy match that removes everything from the beginning of the line up to (and including) the last
+#   colon (:). This effectively isolates the value part of the declaration.
+#
+#  `s/#.*//`:
+#    This removes any comments at the end of the line.
+#
+#  `s/['\"]//g`:
+#    This removes all single and double quotes from the string, wherever they appear (g is for "global").
+#
+#  `s/^[[:space:]]*//; s/[[:space:]]*$//`:
+#    These two expressions trim any leading or trailing whitespace ([[:space:]] matches spaces and tabs).
+TRIM_VALUE_SED="s/.*://; s/#.*//; s/['\"]//g; s/^[[:space:]]*//; s/[[:space:]]*$//"
 
-# If not already set, read .mill-version file
-if [ "x${MILL_VERSION}" = "x" ] ; then
+if [ -z "${MILL_VERSION}" ] ; then
   if [ -f ".mill-version" ] ; then
-    MILL_VERSION="$(head -n 1 .mill-version 2> /dev/null)"
+    MILL_VERSION="$(tr '\r' '\n' < .mill-version | head -n 1 2> /dev/null)"
+  elif [ -f ".config/mill-version" ] ; then
+    MILL_VERSION="$(tr '\r' '\n' < .config/mill-version | head -n 1 2> /dev/null)"
+  elif [ -f "build.mill.yaml" ] ; then
+    MILL_VERSION="$(grep -E "mill-version:" "build.mill.yaml" | sed -E "$TRIM_VALUE_SED")"
+  elif [ -n "${MILL_BUILD_SCRIPT}" ] ; then
+    MILL_VERSION="$(grep -E "//\|.*mill-version" "${MILL_BUILD_SCRIPT}" | sed -E "$TRIM_VALUE_SED")"
   fi
 fi
 
-if [ "x${XDG_CACHE_HOME}" != "x" ] ; then
-  MILL_DOWNLOAD_PATH="${XDG_CACHE_HOME}/mill/download"
-else
-  MILL_DOWNLOAD_PATH="${HOME}/.cache/mill/download"
-fi
+if [ -z "${MILL_VERSION}" ] ; then MILL_VERSION="${DEFAULT_MILL_VERSION}"; fi
 
-# If not already set, try to fetch newest from Github
-if [ "x${MILL_VERSION}" = "x" ] ; then
-  # TODO: try to load latest version from release page
-  echo "No mill version specified."
-  echo "You should provide a version via '.mill-version' file or --mill-version option."
-
-  mkdir -p "${MILL_DOWNLOAD_PATH}"
-  LANG=C touch -d '1 hour ago' "${MILL_DOWNLOAD_PATH}/.expire_latest"
-  if [ "${MILL_DOWNLOAD_PATH}/.latest" -nt "${MILL_DOWNLOAD_PATH}/.expire_latest" ] ; then
-    # we know a current latest version
-    MILL_VERSION="$(head -n 1 ${MILL_DOWNLOAD_PATH}/.latest 2> /dev/null)"
-  fi
+MILL_USER_CACHE_DIR="${XDG_CACHE_HOME:-${HOME}/.cache}/mill"
 
-  if [ "x${MILL_VERSION}" = "x" ] ; then
-    # we don't know a current latest version
-    echo "Retrieving latest mill version ..."
-    LANG=C curl -s -i -f -I ${MILL_REPO_URL}/releases/latest 2> /dev/null  | grep --ignore-case Location: | sed s'/^.*tag\///' | tr -d '\r\n' > "${MILL_DOWNLOAD_PATH}/.latest" 
-    MILL_VERSION="$(head -n 1 ${MILL_DOWNLOAD_PATH}/.latest 2> /dev/null)"
-  fi
+if [ -z "${MILL_FINAL_DOWNLOAD_FOLDER}" ] ; then MILL_FINAL_DOWNLOAD_FOLDER="${MILL_USER_CACHE_DIR}/download"; fi
 
-  if [ "x${MILL_VERSION}" = "x" ] ; then
-    # Last resort
-    MILL_VERSION="${DEFAULT_MILL_VERSION}"
-    echo "Falling back to hardcoded mill version ${MILL_VERSION}"
+MILL_NATIVE_SUFFIX="-native"
+MILL_JVM_SUFFIX="-jvm"
+ARTIFACT_SUFFIX=""
+
+# Check if GLIBC version is at least the required version
+# Returns 0 (true) if GLIBC >= required version, 1 (false) otherwise
+check_glibc_version() {
+  required_version="2.39"
+  required_major=$(echo "$required_version" | cut -d. -f1)
+  required_minor=$(echo "$required_version" | cut -d. -f2)
+  # Get GLIBC version from ldd --version (first line contains version like "ldd (GNU libc) 2.31")
+  glibc_version=$(ldd --version 2>/dev/null | head -n 1 | grep -oE '[0-9]+\.[0-9]+$' || echo "")
+  if [ -z "$glibc_version" ]; then
+    # If we can't determine GLIBC version, assume it's too old
+    return 1
+  fi
+  glibc_major=$(echo "$glibc_version" | cut -d. -f1)
+  glibc_minor=$(echo "$glibc_version" | cut -d. -f2)
+  if [ "$glibc_major" -gt "$required_major" ]; then
+    return 0
+  elif [ "$glibc_major" -eq "$required_major" ] && [ "$glibc_minor" -ge "$required_minor" ]; then
+    return 0
   else
-    echo "Using mill version ${MILL_VERSION}"
+    return 1
   fi
-fi
+}
+
+set_artifact_suffix() {
+  if [ "$(uname -s 2>/dev/null | cut -c 1-5)" = "Linux" ]; then
+    # Native binaries require new enough GLIBC; fall back to JVM launcher if older
+    if ! check_glibc_version; then
+      return
+    fi
+    if [ "$(uname -m)" = "aarch64" ]; then ARTIFACT_SUFFIX="-native-linux-aarch64"
+    else ARTIFACT_SUFFIX="-native-linux-amd64"; fi
+  elif [ "$(uname)" = "Darwin" ]; then
+    if [ "$(uname -m)" = "arm64" ]; then ARTIFACT_SUFFIX="-native-mac-aarch64"
+    else ARTIFACT_SUFFIX="-native-mac-amd64"; fi
+  else
+    echo "This native mill launcher supports only Linux and macOS." 1>&2
+    exit 1
+  fi
+}
 
-MILL="${MILL_DOWNLOAD_PATH}/${MILL_VERSION}"
+case "$MILL_VERSION" in
+  *"$MILL_NATIVE_SUFFIX")
+    MILL_VERSION=${MILL_VERSION%"$MILL_NATIVE_SUFFIX"}
+    set_artifact_suffix
+    ;;
 
-# If not already downloaded, download it
-if [ ! -s "${MILL}" ] ; then
-  
-  # support old non-XDG download dir
-  MILL_OLD_DOWNLOAD_PATH="${HOME}/.mill/download"
-  OLD_MILL="${MILL_OLD_DOWNLOAD_PATH}/${MILL_VERSION}"
-  if [ -x "${OLD_MILL}" ] ; then
-    MILL="${OLD_MILL}"
-  else
-    VERSION_PREFIX="$(echo -n $MILL_VERSION | cut -b -4)"
-    case $VERSION_PREFIX in
-      0.0. | 0.1. | 0.2. | 0.3. | 0.4. )
-        DOWNLOAD_SUFFIX=""
+  *"$MILL_JVM_SUFFIX")
+    MILL_VERSION=${MILL_VERSION%"$MILL_JVM_SUFFIX"}
+    ;;
+
+  *)
+    case "$MILL_VERSION" in
+      0.1.* | 0.2.* | 0.3.* | 0.4.* | 0.5.* | 0.6.* | 0.7.* | 0.8.* | 0.9.* | 0.10.* | 0.11.* | 0.12.*)
         ;;
       *)
-        DOWNLOAD_SUFFIX="-assembly"
+        set_artifact_suffix
         ;;
     esac
-    unset VERSION_PREFIX
-
-    DOWNLOAD_FILE=$(mktemp mill.XXXX)
-    # TODO: handle command not found
-    echo "Downloading mill ${MILL_VERSION} from ${MILL_REPO_URL}/releases ..."
-    curl -L -o "${DOWNLOAD_FILE}" "${MILL_REPO_URL}/releases/download/${MILL_VERSION%%-*}/${MILL_VERSION}${DOWNLOAD_SUFFIX}"
-    chmod +x "${DOWNLOAD_FILE}"
-    mkdir -p "${MILL_DOWNLOAD_PATH}"
-    mv "${DOWNLOAD_FILE}" "${MILL}"
-
-    unset DOWNLOAD_FILE
-    unset DOWNLOAD_SUFFIX
+    ;;
+esac
+
+MILL="${MILL_FINAL_DOWNLOAD_FOLDER}/$MILL_VERSION$ARTIFACT_SUFFIX"
+
+# If not already downloaded, download it
+if [ ! -s "${MILL}" ] || [ "$MILL_TEST_DRY_RUN_LAUNCHER_SCRIPT" = "1" ] ; then
+  case $MILL_VERSION in
+    0.0.* | 0.1.* | 0.2.* | 0.3.* | 0.4.*)
+      MILL_DOWNLOAD_SUFFIX=""
+      MILL_DOWNLOAD_FROM_MAVEN=0
+      ;;
+    0.5.* | 0.6.* | 0.7.* | 0.8.* | 0.9.* | 0.10.* | 0.11.0-M*)
+      MILL_DOWNLOAD_SUFFIX="-assembly"
+      MILL_DOWNLOAD_FROM_MAVEN=0
+      ;;
+    *)
+      MILL_DOWNLOAD_SUFFIX="-assembly"
+      MILL_DOWNLOAD_FROM_MAVEN=1
+      ;;
+  esac
+  case $MILL_VERSION in
+    0.12.0 | 0.12.1 | 0.12.2 | 0.12.3 | 0.12.4 | 0.12.5 | 0.12.6 | 0.12.7 | 0.12.8 | 0.12.9 | 0.12.10 | 0.12.11)
+      MILL_DOWNLOAD_EXT="jar"
+      ;;
+    0.12.*)
+      MILL_DOWNLOAD_EXT="exe"
+      ;;
+    0.*)
+      MILL_DOWNLOAD_EXT="jar"
+      ;;
+    *)
+      MILL_DOWNLOAD_EXT="exe"
+      ;;
+  esac
+
+  MILL_TEMP_DOWNLOAD_FILE="${MILL_OUTPUT_DIR:-out}/mill-temp-download"
+  mkdir -p "$(dirname "${MILL_TEMP_DOWNLOAD_FILE}")"
+
+  if [ "$MILL_DOWNLOAD_FROM_MAVEN" = "1" ] ; then
+    MILL_DOWNLOAD_URL="https://repo1.maven.org/maven2/com/lihaoyi/mill-dist${ARTIFACT_SUFFIX}/${MILL_VERSION}/mill-dist${ARTIFACT_SUFFIX}-${MILL_VERSION}.${MILL_DOWNLOAD_EXT}"
+  else
+    MILL_VERSION_TAG=$(echo "$MILL_VERSION" | sed -E 's/([^-]+)(-M[0-9]+)?(-.*)?/\1\2/')
+    MILL_DOWNLOAD_URL="${GITHUB_RELEASE_CDN}${MILL_REPO_URL}/releases/download/${MILL_VERSION_TAG}/${MILL_VERSION}${MILL_DOWNLOAD_SUFFIX}"
+    unset MILL_VERSION_TAG
+  fi
+
+
+  if [ "$MILL_TEST_DRY_RUN_LAUNCHER_SCRIPT" = "1" ] ; then
+    echo "$MILL_DOWNLOAD_URL"
+    echo "$MILL"
+    exit 0
   fi
+
+  echo "Downloading mill ${MILL_VERSION} from ${MILL_DOWNLOAD_URL} ..." 1>&2
+  curl -f -L -o "${MILL_TEMP_DOWNLOAD_FILE}" "${MILL_DOWNLOAD_URL}"
+
+  chmod +x "${MILL_TEMP_DOWNLOAD_FILE}"
+
+  mkdir -p "${MILL_FINAL_DOWNLOAD_FOLDER}"
+  mv "${MILL_TEMP_DOWNLOAD_FILE}" "${MILL}"
+
+  unset MILL_TEMP_DOWNLOAD_FILE
+  unset MILL_DOWNLOAD_SUFFIX
+fi
+
+MILL_FIRST_ARG=""
+if [ "$1" = "--bsp" ] || [ "${1#"-i"}" != "$1" ] || [ "$1" = "--interactive" ] || [ "$1" = "--no-server" ] || [ "$1" = "--no-daemon" ] || [ "$1" = "--help" ] ; then
+  # Need to preserve the first position of those listed options
+  MILL_FIRST_ARG=$1
+  shift
 fi
 
-unset MILL_DOWNLOAD_PATH
+unset MILL_FINAL_DOWNLOAD_FOLDER
 unset MILL_OLD_DOWNLOAD_PATH
 unset OLD_MILL
 unset MILL_VERSION
 unset MILL_REPO_URL
 
-exec $MILL "$@"
+# -D mill.main.cli is for compatibility with Mill 0.10.9 - 0.13.0-M2
+# We don't quote MILL_FIRST_ARG on purpose, so we can expand the empty value without quotes
+# shellcheck disable=SC2086
+exec "${MILL}" $MILL_FIRST_ARG -D "mill.main.cli=${MILL_MAIN_CLI}" "$@"
diff --git a/mill.bat b/mill.bat
index 879689f..8a7f54e 100644
--- a/mill.bat
+++ b/mill.bat
@@ -1,109 +1,296 @@
-@echo off
-
-rem This is a wrapper script, that automatically download mill from GitHub release pages
-rem You can give the required mill version with --mill-version parameter
-rem If no version is given, it falls back to the value of DEFAULT_MILL_VERSION
-rem
-rem Project page: https://github.com/lefou/millw
-rem
-rem If you want to improve this script, please also contribute your changes back!
-rem
-rem Licensed under the Apache License, Version 2.0
-
-rem setlocal seems to be unavailable on Windows 95/98/ME
-rem but I don't think we need to support them in 2019
-setlocal enabledelayedexpansion
-
-set "DEFAULT_MILL_VERSION=0.9.5"
-
-set "MILL_REPO_URL=https://github.com/com-lihaoyi/mill"
-
-rem %~1% removes surrounding quotes
-if [%~1%]==[--mill-version] (
-    rem shift command doesn't work within parentheses
-    if not [%~2%]==[] (
-        set MILL_VERSION=%~2%
-        set "STRIP_VERSION_PARAMS=true"
-    ) else (
-        echo You specified --mill-version without a version.
-        echo Please provide a version that matches one provided on
-        echo %MILL_REPO_URL%/releases
-        exit /b 1
-    )
-)
-
-if [!MILL_VERSION!]==[] (
-  if exist .mill-version (
-      set /p MILL_VERSION=<.mill-version
-  )
-)
-
-if [!MILL_VERSION!]==[] (
-    set MILL_VERSION=%DEFAULT_MILL_VERSION%
-)
-
-set MILL_DOWNLOAD_PATH=%USERPROFILE%\.mill\download
-
-rem without bat file extension, cmd doesn't seem to be able to run it
-set MILL=%MILL_DOWNLOAD_PATH%\!MILL_VERSION!.bat
-
-if not exist "%MILL%" (
-    set VERSION_PREFIX=%MILL_VERSION:~0,4%
-    set DOWNLOAD_SUFFIX=-assembly
-    if [!VERSION_PREFIX!]==[0.0.] set DOWNLOAD_SUFFIX=
-    if [!VERSION_PREFIX!]==[0.1.] set DOWNLOAD_SUFFIX=
-    if [!VERSION_PREFIX!]==[0.2.] set DOWNLOAD_SUFFIX=
-    if [!VERSION_PREFIX!]==[0.3.] set DOWNLOAD_SUFFIX=
-    if [!VERSION_PREFIX!]==[0.4.] set DOWNLOAD_SUFFIX=
-    set VERSION_PREFIX=
-
-    for /F "delims=-" %%A in ("!MILL_VERSION!") do (
-        set MILL_BASE_VERSION=%%A
-    )
-
-    rem there seems to be no way to generate a unique temporary file path (on native Windows)
-    set DOWNLOAD_FILE=%MILL%.tmp
-
-    set DOWNLOAD_URL=%MILL_REPO_URL%/releases/download/!MILL_BASE_VERSION!/!MILL_VERSION!!DOWNLOAD_SUFFIX!
-
-    echo Downloading mill %MILL_VERSION% from %MILL_REPO_URL%/releases ...
-
-    if not exist "%MILL_DOWNLOAD_PATH%" mkdir "%MILL_DOWNLOAD_PATH%"
-    rem curl is bundled with recent Windows 10
-    rem but I don't think we can expect all the users to have it in 2019
-    where /Q curl
-    if %ERRORLEVEL% EQU 0 (
-        curl -L "!DOWNLOAD_URL!" -o "!DOWNLOAD_FILE!"
-    ) else (
-        rem bitsadmin seems to be available on Windows 7
-        rem without /dynamic, github returns 403
-        rem bitsadmin is sometimes needlessly slow but it looks better with /priority foreground
-        bitsadmin /transfer millDownloadJob /dynamic /priority foreground "!DOWNLOAD_URL!" "!DOWNLOAD_FILE!"
-    )
-    if not exist "!DOWNLOAD_FILE!" (
-        echo Could not download mill %MILL_VERSION%
-        exit /b 1
-    )
-
-    move /y "!DOWNLOAD_FILE!" "%MILL%"
-
-    set DOWNLOAD_FILE=
-    set DOWNLOAD_SUFFIX=
-)
-
-set MILL_DOWNLOAD_PATH=
-set MILL_VERSION=
-set MILL_REPO_URL=
-
-set MILL_PARAMS=%*
-
-if defined STRIP_VERSION_PARAMS (
-    for /f "tokens=1-2*" %%a in ("%*") do (
-        rem strip %%a - It's the "--mill-version" option.
-        rem strip %%b - it's the version number that comes after the option.
-        rem keep  %%c - It's the remaining options.
-        set MILL_PARAMS=%%c
-    )
-)
-
-"%MILL%" %MILL_PARAMS%
+@echo off
+
+setlocal enabledelayedexpansion
+
+if [!DEFAULT_MILL_VERSION!]==[] ( set "DEFAULT_MILL_VERSION=1.1.3" )
+
+if [!MILL_GITHUB_RELEASE_CDN!]==[] ( set "MILL_GITHUB_RELEASE_CDN=" )
+
+if [!MILL_MAIN_CLI!]==[] ( set "MILL_MAIN_CLI=%~f0" )
+
+set "MILL_REPO_URL=https://github.com/com-lihaoyi/mill"
+
+SET MILL_BUILD_SCRIPT=
+
+if exist "build.mill" (
+  set MILL_BUILD_SCRIPT=build.mill
+) else (
+    if exist "build.mill.scala" (
+      set MILL_BUILD_SCRIPT=build.mill.scala
+    ) else (
+        if exist "build.sc" (
+          set MILL_BUILD_SCRIPT=build.sc
+        ) else (
+            rem no-op
+        )
+    )
+)
+
+if [!MILL_VERSION!]==[] (
+  if exist .mill-version (
+    set /p MILL_VERSION=<.mill-version
+  ) else (
+    if exist .config\mill-version (
+      set /p MILL_VERSION=<.config\mill-version
+    ) else (
+      rem Determine which config file to use for version extraction
+      set "MILL_VERSION_CONFIG_FILE="
+      set "MILL_VERSION_SEARCH_PATTERN="
+
+      if exist build.mill.yaml (
+        set "MILL_VERSION_CONFIG_FILE=build.mill.yaml"
+        set "MILL_VERSION_SEARCH_PATTERN=mill-version:"
+      ) else (
+        if not "%MILL_BUILD_SCRIPT%"=="" (
+          set "MILL_VERSION_CONFIG_FILE=%MILL_BUILD_SCRIPT%"
+          set "MILL_VERSION_SEARCH_PATTERN=//\|.*mill-version"
+        )
+      )
+
+      rem Process the config file if found
+      if not "!MILL_VERSION_CONFIG_FILE!"=="" (
+        rem Find the line and process it
+        for /f "tokens=*" %%a in ('findstr /R /C:"!MILL_VERSION_SEARCH_PATTERN!" "!MILL_VERSION_CONFIG_FILE!"') do (
+            set "line=%%a"
+
+            rem --- 1. Replicate sed 's/.*://' ---
+            rem This removes everything up to and including the first colon
+            set "line=!line:*:=!"
+
+            rem --- 2. Replicate sed 's/#.*//' ---
+            rem Split on '#' and keep the first part
+            for /f "tokens=1 delims=#" %%b in ("!line!") do (
+                set "line=%%b"
+            )
+
+            rem --- 3. Replicate sed 's/['"]//g' ---
+            rem Remove all quotes
+            set "line=!line:'=!"
+            set "line=!line:"=!"
+
+            rem --- 4. Replicate sed's trim/space removal ---
+            rem Remove all space characters from the result. This is more robust.
+            set "MILL_VERSION=!line: =!"
+
+            rem We found the version, so we can exit the loop
+            goto :version_found
+        )
+
+        :version_found
+        rem no-op
+      )
+    )
+  )
+)
+
+if [!MILL_VERSION!]==[] (
+    set MILL_VERSION=%DEFAULT_MILL_VERSION%
+)
+
+if [!MILL_FINAL_DOWNLOAD_FOLDER!]==[] set MILL_FINAL_DOWNLOAD_FOLDER=%USERPROFILE%\.cache\mill\download
+
+rem without bat file extension, cmd doesn't seem to be able to run it
+
+set "MILL_NATIVE_SUFFIX=-native"
+set "MILL_JVM_SUFFIX=-jvm"
+set "MILL_FULL_VERSION=%MILL_VERSION%"
+set "MILL_DOWNLOAD_EXT=.bat"
+set "ARTIFACT_SUFFIX="
+REM Check if MILL_VERSION contains MILL_NATIVE_SUFFIX
+echo !MILL_VERSION! | findstr /C:"%MILL_NATIVE_SUFFIX%" >nul
+if !errorlevel! equ 0 (
+    set "MILL_VERSION=%MILL_VERSION:-native=%"
+    REM -native images compiled with graal do not support windows-arm
+    REM https://github.com/oracle/graal/issues/9215
+    IF /I NOT "%PROCESSOR_ARCHITECTURE%"=="ARM64" (
+        set "ARTIFACT_SUFFIX=-native-windows-amd64"
+        set "MILL_DOWNLOAD_EXT=.exe"
+    ) else (
+        rem no-op
+    )
+) else (
+    echo !MILL_VERSION! | findstr /C:"%MILL_JVM_SUFFIX%" >nul
+    if !errorlevel! equ 0 (
+        set "MILL_VERSION=%MILL_VERSION:-jvm=%"
+    ) else (
+        set "SKIP_VERSION=false"
+        set "MILL_PREFIX=%MILL_VERSION:~0,4%"
+        if "!MILL_PREFIX!"=="0.1." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.2." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.3." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.4." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.5." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.6." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.7." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.8." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.9." set "SKIP_VERSION=true"
+        set "MILL_PREFIX=%MILL_VERSION:~0,5%"
+        if "!MILL_PREFIX!"=="0.10." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.11." set "SKIP_VERSION=true"
+        if "!MILL_PREFIX!"=="0.12." set "SKIP_VERSION=true"
+
+        if "!SKIP_VERSION!"=="false" (
+            IF /I NOT "%PROCESSOR_ARCHITECTURE%"=="ARM64" (
+                set "ARTIFACT_SUFFIX=-native-windows-amd64"
+                set "MILL_DOWNLOAD_EXT=.exe"
+            )
+        ) else (
+            rem no-op
+        )
+    )
+)
+
+set MILL=%MILL_FINAL_DOWNLOAD_FOLDER%\!MILL_FULL_VERSION!!MILL_DOWNLOAD_EXT!
+
+set MILL_RESOLVE_DOWNLOAD=
+
+if not exist "%MILL%" (
+  set MILL_RESOLVE_DOWNLOAD=true
+) else (
+    if defined MILL_TEST_DRY_RUN_LAUNCHER_SCRIPT (
+        set MILL_RESOLVE_DOWNLOAD=true
+    ) else (
+        rem no-op
+    )
+)
+
+
+if [!MILL_RESOLVE_DOWNLOAD!]==[true] (
+    set MILL_VERSION_PREFIX=%MILL_VERSION:~0,4%
+    set MILL_SHORT_VERSION_PREFIX=%MILL_VERSION:~0,2%
+    rem Since 0.5.0
+    set MILL_DOWNLOAD_SUFFIX=-assembly
+    rem Since 0.11.0
+    set MILL_DOWNLOAD_FROM_MAVEN=1
+    if [!MILL_VERSION_PREFIX!]==[0.0.] (
+        set MILL_DOWNLOAD_SUFFIX=
+        set MILL_DOWNLOAD_FROM_MAVEN=0
+    )
+    if [!MILL_VERSION_PREFIX!]==[0.1.] (
+        set MILL_DOWNLOAD_SUFFIX=
+        set MILL_DOWNLOAD_FROM_MAVEN=0
+    )
+    if [!MILL_VERSION_PREFIX!]==[0.2.] (
+        set MILL_DOWNLOAD_SUFFIX=
+        set MILL_DOWNLOAD_FROM_MAVEN=0
+    )
+    if [!MILL_VERSION_PREFIX!]==[0.3.] (
+        set MILL_DOWNLOAD_SUFFIX=
+        set MILL_DOWNLOAD_FROM_MAVEN=0
+    )
+    if [!MILL_VERSION_PREFIX!]==[0.4.] (
+        set MILL_DOWNLOAD_SUFFIX=
+        set MILL_DOWNLOAD_FROM_MAVEN=0
+    )
+    if [!MILL_VERSION_PREFIX!]==[0.5.] set MILL_DOWNLOAD_FROM_MAVEN=0
+    if [!MILL_VERSION_PREFIX!]==[0.6.] set MILL_DOWNLOAD_FROM_MAVEN=0
+    if [!MILL_VERSION_PREFIX!]==[0.7.] set MILL_DOWNLOAD_FROM_MAVEN=0
+    if [!MILL_VERSION_PREFIX!]==[0.8.] set MILL_DOWNLOAD_FROM_MAVEN=0
+    if [!MILL_VERSION_PREFIX!]==[0.9.] set MILL_DOWNLOAD_FROM_MAVEN=0
+
+    set MILL_VERSION_PREFIX=%MILL_VERSION:~0,5%
+    if [!MILL_VERSION_PREFIX!]==[0.10.] set MILL_DOWNLOAD_FROM_MAVEN=0
+
+    set MILL_VERSION_PREFIX=%MILL_VERSION:~0,8%
+    if [!MILL_VERSION_PREFIX!]==[0.11.0-M] set MILL_DOWNLOAD_FROM_MAVEN=0
+
+    set MILL_VERSION_PREFIX=%MILL_VERSION:~0,5%
+    set DOWNLOAD_EXT=exe
+    if [!MILL_SHORT_VERSION_PREFIX!]==[0.] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION_PREFIX!]==[0.12.] set DOWNLOAD_EXT=exe
+    if [!MILL_VERSION!]==[0.12.0] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.1] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.2] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.3] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.4] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.5] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.6] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.7] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.8] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.9] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.10] set DOWNLOAD_EXT=jar
+    if [!MILL_VERSION!]==[0.12.11] set DOWNLOAD_EXT=jar
+
+    set MILL_VERSION_PREFIX=
+    set MILL_SHORT_VERSION_PREFIX=
+
+    for /F "delims=- tokens=1" %%A in ("!MILL_VERSION!") do set MILL_VERSION_BASE=%%A
+    set MILL_VERSION_MILESTONE=
+    for /F "delims=- tokens=2" %%A in ("!MILL_VERSION!") do set MILL_VERSION_MILESTONE=%%A
+    set MILL_VERSION_MILESTONE_START=!MILL_VERSION_MILESTONE:~0,1!
+    if [!MILL_VERSION_MILESTONE_START!]==[M] (
+        set MILL_VERSION_TAG=!MILL_VERSION_BASE!-!MILL_VERSION_MILESTONE!
+    ) else (
+        set MILL_VERSION_TAG=!MILL_VERSION_BASE!
+    )
+    if [!MILL_DOWNLOAD_FROM_MAVEN!]==[1] (
+        set MILL_DOWNLOAD_URL=https://repo1.maven.org/maven2/com/lihaoyi/mill-dist!ARTIFACT_SUFFIX!/!MILL_VERSION!/mill-dist!ARTIFACT_SUFFIX!-!MILL_VERSION!.!DOWNLOAD_EXT!
+    ) else (
+        set MILL_DOWNLOAD_URL=!MILL_GITHUB_RELEASE_CDN!%MILL_REPO_URL%/releases/download/!MILL_VERSION_TAG!/!MILL_VERSION!!MILL_DOWNLOAD_SUFFIX!
+    )
+
+    if defined MILL_TEST_DRY_RUN_LAUNCHER_SCRIPT (
+        echo !MILL_DOWNLOAD_URL!
+        echo !MILL!
+        exit /b 0
+    )
+
+    rem there seems to be no way to generate a unique temporary file path (on native Windows)
+    if defined MILL_OUTPUT_DIR (
+        set MILL_TEMP_DOWNLOAD_FILE=%MILL_OUTPUT_DIR%\mill-temp-download
+        if not exist "%MILL_OUTPUT_DIR%" mkdir "%MILL_OUTPUT_DIR%"
+    ) else (
+        set MILL_TEMP_DOWNLOAD_FILE=out\mill-bootstrap-download
+        if not exist "out" mkdir "out"
+    )
+
+    echo Downloading mill !MILL_VERSION! from !MILL_DOWNLOAD_URL! ... 1>&2
+
+    curl -f -L "!MILL_DOWNLOAD_URL!" -o "!MILL_TEMP_DOWNLOAD_FILE!"
+
+    if not exist "%MILL_FINAL_DOWNLOAD_FOLDER%" mkdir "%MILL_FINAL_DOWNLOAD_FOLDER%"
+    move /y "!MILL_TEMP_DOWNLOAD_FILE!" "%MILL%"
+
+    set MILL_TEMP_DOWNLOAD_FILE=
+    set MILL_DOWNLOAD_SUFFIX=
+)
+
+set MILL_FINAL_DOWNLOAD_FOLDER=
+set MILL_VERSION=
+set MILL_REPO_URL=
+
+rem Need to preserve the first position of those listed options
+set MILL_FIRST_ARG=
+if [%~1%]==[--bsp] (
+  set MILL_FIRST_ARG=%1%
+) else (
+  if [%~1%]==[-i] (
+    set MILL_FIRST_ARG=%1%
+  ) else (
+    if [%~1%]==[--interactive] (
+      set MILL_FIRST_ARG=%1%
+    ) else (
+      if [%~1%]==[--no-server] (
+        set MILL_FIRST_ARG=%1%
+      ) else (
+        if [%~1%]==[--no-daemon] (
+          set MILL_FIRST_ARG=%1%
+        ) else (
+          if [%~1%]==[--help] (
+            set MILL_FIRST_ARG=%1%
+          )
+        )
+      )
+    )
+  )
+)
+set "MILL_PARAMS=%*%"
+
+if not [!MILL_FIRST_ARG!]==[] (
+  for /f "tokens=1*" %%a in ("%*") do (
+    set "MILL_PARAMS=%%b"
+  )
+)
+
+rem -D mill.main.cli is for compatibility with Mill 0.10.9 - 0.13.0-M2
+"%MILL%" %MILL_FIRST_ARG% -D "mill.main.cli=%MILL_MAIN_CLI%" %MILL_PARAMS%