Make it easy to extract a file path as Text from a FilePath

[rpglover64]

AFAICT, there's no easy (and discoverable) way to get a function :: FilePath -> Text; the closest thing I can find is fromRight . toText, which involves using the (now deprecated) package system-filepath directly as well as an unsafe function (which, apparently, is not provided by base).

[PierreR]

You can use fp :: Format r (FilePath -> r)

import Filesystem.Path.CurrentOS((</>))
format fp ("usr" </> "lib")

That said there is an issue about replacing system-filepath (#54)

I believe your issue is a duplicate to #67

[Gabriella439]

I think I should probably expand the tutorial to mention the format fp trick and maybe also include an example of its use in Turtle.Prelude to ensure that people don't miss this. I agree that it's a pretty common idiom that is hard to discover.

[PierreR]

As a note, given 'p' of type FilePath and 't' of type Text, the only way to safely handle the concatenation of those values is:

format fp (p </> fromText t)

I believe it is too much of a trouble for bash scripting but that's another story.