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Fixed bug in build workflow - #24
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Nuitka's MinGW64 auto-download is broken on Windows CI right now (FATAL: Only this specific gcc is supported with Nuitka / Failed unexpectedly in Scons C backend compilation), and this happens even with zero gcc anywhere on PATH -- ruling out the pre-installed- toolchain-conflict theory from the previous two commits. Matches the open upstream regression Nuitka/Nuitka#3309. windows-latest already ships Visual Studio Build Tools, so force --msvc=latest on Windows instead of fighting the MinGW64 download path. Removes the now-pointless "Remove pre-installed gcc from PATH" step.
windows-latest moved to Windows Server 2025 + Visual Studio 2026 in June 2026 (github.blog changelog / actions/runner-images#14016). Nuitka 2.7.11's MSVC auto-detection doesn't recognize the VS2026 toolset yet: "Nuitka-Scons: MSVC version resolved to None" -> "FATAL: Error, cannot locate suitable C compiler", even with --msvc=latest. This -- not any gcc/PATH conflict or MinGW64-download issue -- was the actual root cause of every Windows build failure investigated so far in this branch: the runner image moved out from under Nuitka. Pin to windows-2022, GitHub's still-maintained image carrying the older, Nuitka-supported VS2022 toolset.
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This PR fixes issues in the build workflow, specifically for Windows.
While fixing the issue, a lot of debug output has been added, which I will keep for debugging potential future issues.