ERROR: Current directory is not a meson build directory: `C:\Users\phoen\source\repos\The-Powder-Toy`.
Please specify a valid build dir or change the working directory to it.
It is also possible that the build directory was generated with an old
meson version. Please regenerate it in this case.

What?

=============full log============

C:\Users\phoen>cd /d C:\Users\phoen\source\repos

C:\Users\phoen\source\repos>cd The-Powder-Toy

C:\Users\phoen\source\repos\The-Powder-Toy>meson setup build-debug
The Meson build system
Version: 1.12.0
Source dir: C:\Users\phoen\source\repos\The-Powder-Toy
Build dir: C:\Users\phoen\source\repos\The-Powder-Toy\build-debug
Build type: native build
Activating VS 18.10.1
Project name: the-powder-toy
Project version: 100.1.400
C++ compiler for the host machine: cl (msvc 19.51.36257 "Microsoft (R) C/C++ Optimizing Compiler Version 19.51.36257 for x64")
C++ linker for the host machine: link link 14.51.36257.0
Host machine cpu family: x86_64
Host machine cpu: x86_64
Program python3 found: YES (C:\Users\phoen\AppData\Local\Microsoft\WindowsApps\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\python3.exe)
Program inkscape skipped: feature render_icons_with_inkscape disabled
Downloading tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421 source from https://github.com/The-Powder-Toy/tpt-libs/releases/download/v20260821222421/tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421.zip
Downloading: 100%|?????????????????????????????????????????????????????????????????????| 13.2M/13.2M 13.0MB/s eta 00:00

Executing subproject tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421 for machine: host

tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Project name: tpt-libs-prebuilt
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Project version: v20260821222421
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| C++ compiler for the host machine: cl (msvc 19.51.36257 "Microsoft (R) C/C++ Optimizing Compiler Version 19.51.36257 for x64")
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| C++ linker for the host machine: link link 14.51.36257.0
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library lua51 found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library lua found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library lua found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library zlibd found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library curl-d_imp found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library nghttp2 found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library wsock32 found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library ws2_32 found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library crypt32 found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library bcrypt found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library fftw3f found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library SDL2d found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library SDL2maind found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library version found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library imm32 found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library winmm found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library png16d found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library jsoncpp found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Library bz2 found: YES
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Build targets in project: 0
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421| Subproject tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421 finished.

Dependency luajit for host machine found: YES 2.1.0-git-tpt-libs (overridden)
Dependency libcurl for host machine found: YES 8.10.1+nghttp2-1.66.0+zlib-1.3.1+mbedtls-3.6.4.tar.bz2-tpt-libs (overridden)
Dependency fftw3f for host machine found: YES 3.3.8-tpt-libs (overridden)
Run-time dependency threads found: YES
Dependency libpng16 for host machine found: YES 1.6.49+zlib-1.3.1-tpt-libs (overridden)
Dependency sdl2 for host machine found: YES 2.30.9-tpt-libs (overridden)
Dependency bzip2 for host machine found: YES 1.0.8-tpt-libs (overridden)
Dependency jsoncpp for host machine found: YES 1.9.5-tpt-libs (overridden)
Configuring VcsTag.h using configuration
Library crypt32 found: YES
Configuring ElementNumbers.h using configuration
Configuring ClipboardImpls.h using configuration
Configuring ToolNumbers.h using configuration
Configuring Config.h using configuration
Configuring powder-res.rc using configuration
Windows resource compiler: Microsoft (R) Windows (R) Resource Compiler Version 10.0.10011.16384
Build targets in project: 21

the-powder-toy 100.1.400

Subprojects (for host machine)
tpt-libs-prebuilt-x86_64-windows-msvc-dynamic-debug-v20260821222421: YES

Found ninja-1.13.2.git.kitware.jobserver-pipe-1 at C:\Users\phoen\AppData\Local\Packages\PythonSoftwareFoundation.Python.3.12_qbz5n2kfra8p0\LocalCache\local-packages\Python312\Scripts\ninja.exe

C:\Users\phoen\source\repos\The-Powder-Toy>meson compile

ERROR: Current directory is not a meson build directory: `C:\Users\phoen\source\repos\The-Powder-Toy`.
Please specify a valid build dir or change the working directory to it.
It is also possible that the build directory was generated with an old
meson version. Please regenerate it in this case.

C:\Users\phoen\source\repos\The-Powder-Toy>

@LBPHacker (View Post)

 what?