How to use/install a Swift library in Collab

I tried the following but it’s not working

%install '.package(url: \"https://github.com/JustHTTP/Just\", from: \"0.7.1\")' Just

I got those errors:

error: <Cell 45>:1:10: error: single-quoted string literal found, use '"'
%install '.package(url: \"https://github.com/JustHTTP/Just\", from: \"0.7.1\")' Just
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
         ".package(url: \"https://github.com/JustHTTP/Just\", from: \"0.7.1\")"

error: <Cell 45>:1:9: error: consecutive statements on a line must be separated by ';'
%install '.package(url: \"https://github.com/JustHTTP/Just\", from: \"0.7.1\")' Just
        ^
        ;

error: <Cell 45>:1:80: error: consecutive statements on a line must be separated by ';'
%install '.package(url: \"https://github.com/JustHTTP/Just\", from: \"0.7.1\")' Just
                                                                               ^