Name: nimble (packaging for nim, the programming language)
Why should this be included in the repository: Nim already is in the repository, but nimble isn't. Interestingly, the wiki mentions that nimble is bundled with nim as of v0.15, but you can't call nimble from the command-line to run it.
Is it Open Source (yes/no): Yes
How many users do you anticipate will use this software?: Pretty much everyone who uses nim to program, I'd think.
Link to source tarball/zip file: https://github.com/nim-lang/nimble/archive/v0.8.4.zip