[feature] Support list type as option value

For those cases where more than one value is possible for an option, it would be great accepting a list and as its value. For instance:

class FooConan(ConanFile):
    settings = "os", "compiler", "build_type", "arch"
    options = {"shared": [True, False], "instructions": [None, "ANY"]}
    default_options = {"shared": False, "instructions": ["avx", "sse2", "sse4"]}

The instructions will be converted to a string, as it will be a PackageOption which converts any content to a string, so we would need to convert again to a list in the code in case need to access one of those values.

So far we can’t use such feature, we need to create a single option for each value, which seems be too much, depending the situation. The OptionValue is smart enough right now to support boolean, string and integer, right now.

• I’ve read the CONTRIBUTING guide.

[czoido]

I’m closing this as it looks that in the end we all agree on not implementing.

[czoido]

In my personal opinion, although I agree with @uilianries that it would be a nice feature that would improve some recipes I also think adding types support for Options would be too much increase in complexity (for all the reasons already mentioned) to just save some lines of code in a small percentage of recipes… so I would opt to not implement this until there’s a significant amount of recipes that need this.