How to nixify a crate with crane?

[khazaddum]

I want to create a flake to install an app that is normally installed by using cargo install --locked <app>. Given that this app has very specific requirements regarding Rust versions and toolchains, I would like to wrap a flake around it.

How do I specify the source to be from crates.io rather than from my local drive for the build?

[ipetkov]

Hi @khazaddum! Pretty much any source fetcher should work. You can set the src attribute to something like fetchCrate (if you want to pull straight from crates.io) or fetchFromGitHub (if you want to fetch from GitHub instead)

Note that if the upstream source you are pulling from does not carry a Cargo.lock file you may need to provide your own

Hope this helps!