This could be impproved

[RoadRoller01]

https://github.com/ecly/dotfiles/blob/54845ff900988dbcd5cf25c7cb597bbe776eef0d/.vim/lua/core/options.lua#L69C1-L88C3
instead of checking if you are running on wsl, you may check if win32yank.exe exists
like this:

vim.cmd [[
    let windows = executable('win32yank.exe')
    if windows
          let g:clipboard = {
                \   'name': 'win32yank-wsl',
                \   'copy': {
                \      '+': 'win32yank.exe -i --crlf',
                \      '*': 'win32yank.exe -i --crlf',
                \    },
                \   'paste': {
                \      '+': 'win32yank.exe -o --lf',
                \      '*': 'win32yank.exe -o --lf',
                \   },
                \   'cache_enabled': 0,
                \ }
    endif
]]

The only disadvantage of this is that if you are using WSL and have not installed Win32yank, you will not receive any error messages, unlike with your current implementation.