anchor.diff:  :: Downloads ICU, which will be used as a dependency for Foundation.
   setlocal enableextensions enabledelayedexpansion
   
  -set file_name=icu4c-%icu_version%-Win64-MSVC2017.zip
  +set file_name=icu4c-%icu_version%-Win64-MSVC2019.zip
   curl -L -O "https://github.com/unicode-org/icu/releases/download/release-%icu_version_dashed%/%file_name%" %exitOnError%
   :: unzip warns about the paths in the zip using slashes, which raises the
   :: errorLevel to 1. We cannot use exitOnError, and have to ignore errors.
  
positive.code: :: Swift Package Manager.
  setlocal enableextensions enabledelayedexpansion
  
  set file_name=sqlite-amalgamation-3270200.zip
  curl -L -O "https://www.sqlite.org/2019/%file_name%" %exitOnError%
  "%SystemDrive%\Program Files\Git\usr\bin\unzip.exe" -o %file_name% %exitOnError%
  
  goto :eof
  
negative.code: 
  PATH=%PATH%;%PYTHON_HOME%
  
  set icu_version_major=69
  set icu_version_minor=1
  set icu_version=%icu_version_major%_%icu_version_minor%
  set icu_version_dashed=%icu_version_major%-%icu_version_minor%
  
  