Function to add proprietary license

[hadley]

i.e. for internal packages that are definitely not open source. Can take model from https://r-pkgs.org/description.html#license

[ijlyttle]

Of course, nothing here you don't already know.

I (used to) run into problems on R CMD CHECK as proprietary licenses are non-standard; someone (maybe @krlmlr) suggested I add these lines to .Renviron:

# ignore non-standard license when checking locally
_R_CHECK_LICENSE_=FALSE

This disables the check for all the open source stuff, but it still gets checked on CI.

If this is the right way to go, perhaps this could be useful as feedback when the function is called?

[malcolmbarrett]

FWIW, here's an extended discussion on this issue, which centers around the example from R Packages: https://unconj.ca/blog/copyright-in-closed-source-r-packages-the-right-way.html

[jennybc]

Function should be named use_proprietary_license().