From 8f7fef629b37e38341bfb8b99a276df9355551ec Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Tue, 20 Oct 2020 13:13:03 -0400
Subject: ci: add Python to PATH on Windows

Our test suite searches for a Python interpreter to perform some extra
checks.  Our CI base images for Linux have Python available.  Update our
Windows jobs to provide a Python interpreter for our test suite to find
consistently between the build and test steps.
---
 .gitlab/ci/download_python3.cmake | 41 +++++++++++++++++++++++++++++++++++++++
 .gitlab/os-windows.yml            |  3 +++
 2 files changed, 44 insertions(+)
 create mode 100644 .gitlab/ci/download_python3.cmake

diff --git a/.gitlab/ci/download_python3.cmake b/.gitlab/ci/download_python3.cmake
new file mode 100644
index 0000000..0f5b18b
--- /dev/null
+++ b/.gitlab/ci/download_python3.cmake
@@ -0,0 +1,41 @@
+cmake_minimum_required(VERSION 3.17)
+
+set(version "3.8.6")
+set(sha256sum "376e18eef7e3ea467f0e3af041b01fc7e2f12855506c2ab2653ceb5e0951212e")
+set(dirname "python-${version}-embed-win-x86_64")
+set(tarball "${dirname}.tar.xz")
+
+# Download the file.
+file(DOWNLOAD
+  "https://cmake.org/files/dependencies/${tarball}"
+  ".gitlab/${tarball}"
+  STATUS download_status
+  EXPECTED_HASH "SHA256=${sha256sum}")
+
+# Check the download status.
+list(GET download_status 0 res)
+if (res)
+  list(GET download_status 1 err)
+  message(FATAL_ERROR
+    "Failed to download ${tarball}: ${err}")
+endif ()
+
+# Extract the file.
+execute_process(
+  COMMAND
+    "${CMAKE_COMMAND}"
+    -E tar
+    xzf "${tarball}"
+  WORKING_DIRECTORY ".gitlab"
+  RESULT_VARIABLE res
+  ERROR_VARIABLE err
+  ERROR_STRIP_TRAILING_WHITESPACE)
+if (res)
+  message(FATAL_ERROR
+    "Failed to extract ${tarball}: ${err}")
+endif ()
+
+# Move to a predictable directory.
+file(RENAME
+  ".gitlab/${dirname}"
+  ".gitlab/python3")
diff --git a/.gitlab/os-windows.yml b/.gitlab/os-windows.yml
index 61a2018..6830b8a 100644
--- a/.gitlab/os-windows.yml
+++ b/.gitlab/os-windows.yml
@@ -82,6 +82,9 @@
     - ninja --version
     - cmake -P .gitlab/ci/download_qt.cmake
     - Set-Item -Force -Path "env:PATH" -Value "$pwdpath\.gitlab\qt\bin;$env:PATH"
+    - cmake -P .gitlab/ci/download_python3.cmake
+    - Set-Item -Force -Path "env:PATH" -Value "$pwdpath\.gitlab\python3;$env:PATH"
+    - python --version
 
 .cmake_build_windows:
     stage: build
-- 
cgit v0.12