Launcher/Internal/python.props at master · SplitgateDevelopment/Launcher · GitHub

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<?xml version="1.0" encoding="utf-8"?>
<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <!--
    Resolves the Python root used to compile/link the embedded interpreter
    (pybind11 + <Python.h>). Any 64-bit CPython 3.x works; the newest one found
    wins. Internal is an x64 build, so only 64-bit installs are considered.

    Resolution order (first match wins):
      1. /p:PythonRoot=<dir>                        (explicit MSBuild property)
      2. %SPLITGATE_PYTHON_DIR%                      (environment variable)
      3. C:\Python3XY                               (manual install convention)
      4. Official installer InstallPath, HKCU then HKLM (covers per-user and
         all-user installs in any folder)

    Resolution is done here (static, at import time) rather than in a target on
    purpose: IncludePath/LibraryPath below feed the compiler/linker search paths
    (%INCLUDE% / %LIB%), which MSBuild freezes before a BeforeTargets="Link"
    target would run — so resolving in a target links against a lib dir the
    linker never searches. To support another version, add a pair of lines below.
  -->
  <PropertyGroup Label="PythonResolve">
    <!-- 2. Environment-variable override. -->
    <PythonRoot Condition="'$(PythonRoot)' == '' and '$(SPLITGATE_PYTHON_DIR)' != '' and Exists('$(SPLITGATE_PYTHON_DIR)\include\Python.h')">$(SPLITGATE_PYTHON_DIR)\</PythonRoot>

    <!-- 3. Manual C:\Python3XY convention, newest first. -->
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('C:\Python315\include\Python.h')">C:\Python315\</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('C:\Python314\include\Python.h')">C:\Python314\</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('C:\Python313\include\Python.h')">C:\Python313\</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('C:\Python312\include\Python.h')">C:\Python312\</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('C:\Python311\include\Python.h')">C:\Python311\</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('C:\Python310\include\Python.h')">C:\Python310\</PythonRoot>

    <!-- 4. Official installer InstallPath from the registry (HKCU then HKLM),
            newest first. The value already ends with a backslash. -->
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.15\InstallPath@)include\Python.h')">$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.15\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.15\InstallPath@)include\Python.h')">$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.15\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.14\InstallPath@)include\Python.h')">$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.14\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.14\InstallPath@)include\Python.h')">$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.14\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.13\InstallPath@)include\Python.h')">$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.13\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.13\InstallPath@)include\Python.h')">$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.13\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.12\InstallPath@)include\Python.h')">$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.12\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.12\InstallPath@)include\Python.h')">$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.12\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.11\InstallPath@)include\Python.h')">$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.11\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.11\InstallPath@)include\Python.h')">$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.11\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.10\InstallPath@)include\Python.h')">$(registry:HKEY_CURRENT_USER\SOFTWARE\Python\PythonCore\3.10\InstallPath@)</PythonRoot>
    <PythonRoot Condition="'$(PythonRoot)' == '' and Exists('$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.10\InstallPath@)include\Python.h')">$(registry:HKEY_LOCAL_MACHINE\SOFTWARE\Python\PythonCore\3.10\InstallPath@)</PythonRoot>

    <!-- Normalize the trailing slash for a /p:PythonRoot=... override. -->
    <PythonRoot Condition="'$(PythonRoot)' != '' and !HasTrailingSlash('$(PythonRoot)')">$(PythonRoot)\</PythonRoot>
  </PropertyGroup>

  <PropertyGroup Condition="'$(PythonRoot)' != ''">
    <IncludePath>$(PythonRoot)include;$(IncludePath)</IncludePath>
    <LibraryPath>$(PythonRoot)libs;$(LibraryPath)</LibraryPath>
  </PropertyGroup>

  <!-- Fail early with a clear message (and echo the chosen root) at build time. -->
  <Target Name="CheckPython" BeforeTargets="ClCompile">
    <Error Condition="'$(PythonRoot)' == ''"
           Text="No 64-bit CPython 3.x installation found. Install Python (official installer) or set the SPLITGATE_PYTHON_DIR environment variable to your Python root (the folder containing include\ and libs\)." />
    <Message Importance="high" Text="Splitgate: using Python at $(PythonRoot)" />
  </Target>
</Project>