By now cygwin nix has been enough so I never cared about the non-unix paths. But some colleagues have a desire for a cygwin-less solution because the programs run faster in either WSL or native windows, and then this may have a role.
It’d be nice that a cygwin nix could evaluate the same kind of recipes as a mingw nix, and the paths worked just fine, not requiring different recipes. The same way one can use git for mingw or git for cygwin, in a windows machine.
1st time I use this discourse, and created an account only to answer this topic. It says I reached the limit of Replies in this topic and that I should edit my previous replies instead. The last nix we use 2.0.x doesn’t need libeditline. So maybe someone broke the normal cygwin build by adding that.