anchor.diff:  
   PATH=%PATH%;%PYTHON_HOME%
   
  -set icu_version_major=64
  -set icu_version_minor=2
  +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%
   
  
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: :: Downloads ICU, which will be used as a dependency for Foundation.
  setlocal enableextensions enabledelayedexpansion
  
  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.
  