github.workspace starts with lower case drive letter on Windows, everything else upper case

I am trying to use github actions to compile a project. In order to set some additional environment variables I am using ${{github.workspace}}, see below. From the log I can see that the path starts with d:, but anything else in powershell returns D:\ (so upper case). Because the scripts we use also run on Linux we assume paths are case sensitive and now d:\ and D:\ are two different paths. Would help when github actions would normalize the drive letter on widnows using powershell

env:
  DOC_ROOT: ${{ github.workspace }}/ACE
  ACE_ROOT: ${{ github.workspace }}/ACE/ACE
  MPC_ROOT: ${{ github.workspace }}/ACE/MPC
  TAO_ROOT: ${{ github.workspace }}/ACE/TAO
  X11_BASE_ROOT: ${{ github.workspace }}/axcioma
  RIDL_ROOT: ${{ github.workspace }}/ridl
  TAOX11_ROOT: ${{ github.workspace }}

The environment

2020-04-03T10:56:03.6715546Z env:
2020-04-03T10:56:03.6715832Z DOC_ROOT: d:\a\taox11\taox11/ACE
2020-04-03T10:56:03.6715914Z ACE_ROOT: d:\a\taox11\taox11/ACE/ACE
2020-04-03T10:56:03.6716035Z MPC_ROOT: d:\a\taox11\taox11/ACE/MPC
2020-04-03T10:56:03.6716159Z TAO_ROOT: d:\a\taox11\taox11/ACE/TAO
2020-04-03T10:56:03.6716293Z X11_BASE_ROOT: d:\a\taox11\taox11/axcioma
2020-04-03T10:56:03.6716374Z RIDL_ROOT: d:\a\taox11\taox11/ridl
2020-04-03T10:56:03.6716508Z TAOX11_ROOT: d:\a\taox11\taox11

More logging, see D:\ and C:\ everywhere else

2020-04-03T10:56:11.8483934Z ##[group]Run actions/setup-ruby@v1
2020-04-03T10:56:11.8484068Z with:
2020-04-03T10:56:11.8484152Z ruby-version: 2.7
2020-04-03T10:56:11.8484218Z env:
2020-04-03T10:56:11.8484525Z DOC_ROOT: d:\a\taox11\taox11/ACE
2020-04-03T10:56:11.8484603Z ACE_ROOT: d:\a\taox11\taox11/ACE/ACE
2020-04-03T10:56:11.8484837Z MPC_ROOT: d:\a\taox11\taox11/ACE/MPC
2020-04-03T10:56:11.8484897Z TAO_ROOT: d:\a\taox11\taox11/ACE/TAO
2020-04-03T10:56:11.8484975Z X11_BASE_ROOT: d:\a\taox11\taox11/axcioma
2020-04-03T10:56:11.8485066Z RIDL_ROOT: d:\a\taox11\taox11/ridl
2020-04-03T10:56:11.8485142Z TAOX11_ROOT: d:\a\taox11\taox11
2020-04-03T10:56:11.8485201Z CC:
2020-04-03T10:56:11.8485271Z CXX:
2020-04-03T10:56:11.8485432Z INCLUDE: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.16.27023\ATLMFC\include;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.16.27023\include;C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\ucrt;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\shared;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\um;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\winrt;C:\Program Files (x86)\Windows Kits\10\include\10.0.17763.0\cppwinrt
2020-04-03T10:56:11.8485767Z LIB: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.16.27023\ATLMFC\lib\x64;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.16.27023\lib\x64;C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\lib\um\x64;C:\Program Files (x86)\Windows Kits\10\lib\10.0.17763.0\ucrt\x64;C:\Program Files (x86)\Windows Kits\10\lib\10.0.17763.0\um\x64;
2020-04-03T10:56:11.8486521Z LIBPATH: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.16.27023\ATLMFC\lib\x64;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.16.27023\lib\x64;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.16.27023\lib\x86\store\references;C:\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.17763.0;C:\Program Files (x86)\Windows Kits\10\References\10.0.17763.0;C:\windows\Microsoft.NET\Framework64\v4.0.30319;
2020-04-03T10:56:11.8488270Z Path: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.16.27023\bin\HostX64\x64;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\VC\VCPackages;C:\Program Files (x86)\Microsoft SDKs\TypeScript\3.1;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\CommonExtensions\Microsoft\TestWindow;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\CommonExtensions\Microsoft\TeamFoundation\Team Explorer;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\MSBuild\15.0\bin\Roslyn;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Team Tools\Performance Tools\x64;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Team Tools\Performance Tools;C:\Program Files (x86)\Microsoft Visual Studio\Shared\Common\VSPerfCollectionTools\\x64;C:\Program Files (x86)\Microsoft Visual Studio\Shared\Common\VSPerfCollectionTools\;C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.1 Tools\x64\;C:\Program Files (x86)\HTML Help Workshop;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\CommonExtensions\Microsoft\FSharp\;C:\Program Files (x86)\Windows Kits\10\bin\10.0.17763.0\x64;C:\Program Files (x86)\Windows Kits\10\bin\x64;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\\MSBuild\15.0\bin;C:\windows\Microsoft.NET\Framework64\v4.0.30319;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\Tools\;C:\Program Files\Mercurial\;C:\ProgramData\kind;C:\vcpkg;C:\cf-cli;C:\Program Files (x86)\NSIS\;C:\Program Files\Mercurial\;C:\hostedtoolcache\windows\Boost\1.69.0;C:\Program Files\dotnet;C:\mysql-5.7.21-winx64\bin;C:\Program Files\Java\zulu-8-azure-jdk_8.40.0.25-8.0.222-win_x64\bin;C:\SeleniumWebDrivers\GeckoDriver;C:\Program Files (x86)\sbt\bin;C:\Rust\.cargo\bin;C:\Go1.14.1\bin;C:\Program Files\Git\bin;C:\hostedtoolcache\windows\Ruby\2.5.7\x64\bin;C:\hostedtoolcache\windows\Python\3.7.6\x64\Scripts;C:\hostedtoolcache\windows\Python\3.7.6\x64;C:\npm\prefix;C:\Program Files (x86)\Microsoft SDKs\Azure\CLI2\wbin;C:\Program Files\Microsoft MPI\Bin\;C:\windows\system32;C:\windows;C:\windows\System32\Wbem;C:\windows\System32\WindowsPowerShell\v1.0\;C:\ProgramData\Chocolatey\bin;C:\Program Files\Docker;C:\Program Files\PowerShell\7\;C:\Program Files\dotnet\;C:\Program Files\Microsoft SQL Server\130\Tools\Binn\;C:\Program Files (x86)\Microsoft SQL Server\110\DTS\Binn\;C:\Program Files (x86)\Microsoft SQL Server\120\DTS\Binn\;C:\Program Files (x86)\Microsoft SQL Server\130\DTS\Binn\;C:\Program Files (x86)\Microsoft SQL Server\140\DTS\Binn\;C:\Program Files (x86)\Microsoft SQL Server\150\DTS\Binn\;C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit\;C:\Program Files\Microsoft Service Fabric\bin\Fabric\Fabric.Code;C:\Program Files\Microsoft SDKs\Service Fabric\Tools\ServiceFabricLocalClusterManager;C:\Program Files\nodejs\;C:\Program Files\OpenSSL\bin;C:\Strawberry\c\bin;C:\Strawberry\perl\site\bin;C:\Strawberry\perl\bin;C:\Program Files\Git\cmd;C:\Program Files\Git\mingw64\bin;C:\Program Files\Git\usr\bin;c:\tools\php;C:\Program Files (x86)\sbt\bin;C:\Program Files (x86)\Subversion\bin;C:\SeleniumWebDrivers\ChromeDriver\;C:\SeleniumWebDrivers\EdgeDriver\;C:\ProgramData\chocolatey\lib\maven\apache-maven-3.6.3\bin;C:\Program Files\CMake\bin;C:\Users\runneradmin\.dotnet\tools;C:\Program Files (x86)\Microsoft SQL Ser;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin;C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\IDE\CommonExtensions\Microsoft\CMake\Ninja
2020-04-03T10:56:11.8488951Z Platform: x64
2020-04-03T10:56:11.8489069Z PSModulePath: C:\Modules\azurerm_2.1.0;C:\Modules\azure_2.1.0;C:\Users\packer\Documents\WindowsPowerShell\Modules;C:\Program Files\WindowsPowerShell\Modules;C:\windows\system32\WindowsPowerShell\v1.0\Modules;C:\Program Files\Microsoft SQL Server\130\Tools\PowerShell\Modules\
2020-04-03T10:56:11.8489203Z VCToolsInstallDir: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Tools\MSVC\14.16.27023\
2020-04-03T10:56:11.8489303Z VCToolsRedistDir: C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\VC\Redist\MSVC\14.16.27012\
2020-04-03T10:56:11.8489379Z VCToolsVersion: 14.16.27023
2020-04-03T10:56:11.8489454Z VisualStudioVersion: 15.0
2020-04-03T10:56:11.8489528Z VSCMD_ARG_app_plat: Desktop
2020-04-03T10:56:11.8489601Z VSCMD_ARG_HOST_ARCH: x64
2020-04-03T10:56:11.8489657Z VSCMD_ARG_TGT_ARCH: x64
2020-04-03T10:56:11.8489731Z VSCMD_VER: 15.9.21
2020-04-03T10:56:11.8489828Z WindowsLibPath: C:\Program Files (x86)\Windows Kits\10\UnionMetadata\10.0.17763.0;C:\Program Files (x86)\Windows Kits\10\References\10.0.17763.0
2020-04-03T10:56:11.8489925Z WindowsSdkBinPath: C:\Program Files (x86)\Windows Kits\10\bin\
2020-04-03T10:56:11.8490008Z WindowsSdkDir: C:\Program Files (x86)\Windows Kits\10\
2020-04-03T10:56:11.8490072Z WindowsSDKLibVersion: 10.0.17763.0\
2020-04-03T10:56:11.8490154Z WindowsSdkVerBinPath: C:\Program Files (x86)\Windows Kits\10\bin\10.0.17763.0\
2020-04-03T10:56:11.8490406Z WindowsSDKVersion: 10.0.17763.0\
2020-04-03T10:56:11.8490494Z WindowsSDK_ExecutablePath_x64: C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.1 Tools\x64\
2020-04-03T10:56:11.8490589Z WindowsSDK_ExecutablePath_x86: C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.6.1 Tools\
2020-04-03T10:56:11.8490657Z ##[endgroup]

We will add a workaround for this in our code