Hi Corey.. I noticed this thread via Haskell Weekly News. Corey O'Connor wrote:
For further development of the vty package I'm really only paying attention to the requirements that fall out of the Yi project. Are there any other projects that depend on the vty package?
Why yes! I just used it within the hledger project. I found it easier to get started with the (h/nano)curses libs. From your cursor-moving example I started tweaking and soon had a working ui. It works well here and I'm hoping it will be pretty robust across platforms. More top of the head feedback: I liked the level of abstraction, it seems to handle a lot of routine stuff for me. I liked to hear that it avoids flicker that (apparently) curses suffers from. I expected renderBS to convert a multiline string into an Image of height > 1. It might be nice if the <-> and <|> combinators were more forgiving about mismatching dimensions, I get unexpected failures from them. After a failure like this my program quits but the terminal is not properly reset until I run "reset" manually. I believe vty supports only whole-screen updates, and you could write more performant uis by careful use of *curses ? My experiment is quick enough for regular use on my macbook, but I can only move the cursor so fast and when I highlight the whole line that it's on there is noticeable double-display while I move. I haven't tried profiling yet. I'd welcome any tips on how to write a cross-platform TUI that updates instantly! So thank you and Stefan O'Rear very much indeed! -Simon