[Opam 2.0.8] Creating local switch advises the --compiler option which doesn't exist

[MisterDA]

$ opam switch create .
[WARNING] The default compiler selection: ocaml-system >= 4.02.3 | ocaml-base-compiler
          is not compatible with the local packages found at C:/Users/user/project, and the packages don't specify an unambiguous compiler.
          You can use `--compiler` to manually select one.
You may also proceed, with no specific compiler selected. Do you want to? [Y/n] n
'C:\OCaml64\usr\local\bin\opam.exe switch create .' failed.

$ opam switch create --compiler=ocaml-variants.4.12.0+mingw64c .
opam: unknown option `--compiler'.
Usage: opam switch [OPTION]... [COMMAND] [ARG]...
Try `opam switch --help' or `opam --help' for more information.

$ opam switch create . ocaml-variants.4.12.0+mingw64c
... # ok

--compiler is not an option, it's the second (optional) argument of switch create. I haven't tested with newer versions of Opam.

[dra27]

This is fixed in 2.1.0 (because the code was deleted!) but @rjbou is going to slip a quick correction to the message into 2.0.9 today!