Try newer version of mingw, the one provided by conda forge when specifying {{ compiler('m2w64_cxx') }} is too old.
@@ -17,8 +17,8 @@ requirements:
build:
- {{ compiler('c') }} # [not win]
- {{ compiler('cxx') }} # [not win]
- - {{ compiler('m2w64_c') }} # [win]
- - {{ compiler('m2w64_cxx') }} # [win]
+ - m2w64-gcc # [win]
+ - m2w64-make # [win]
- cmake
- make # [not win]
