{
description = "...";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
utils.url = "github:numtide/flake-utils";
rust-overlay.url = "github:oxalica/rust-overlay";
crate2nix = {
url = "github:kolloch/crate2nix";
flake = false;
};
flake-compat = {
url = "github:edolstra/flake-compat";
flake = false;
};
};
outputs = { self, nixpkgs, utils, rust-overlay, crate2nix, ... }:
let
name = "vim2nix-overlay";
in
utils.lib.eachDefaultSystem
(system:
let
# Imports
pkgs = import nixpkgs {
inherit system;
overlays = [
rust-overlay.overlay
(self: super: {
# Because rust-overlay bundles multiple rust packages into one
# derivation, specify that mega-bundle here, so that crate2nix
# will use them automatically.
rustc = self.rust-bin.stable.latest.default;
cargo = self.rust-bin.stable.latest.default;
})
];
};
inherit (import "${crate2nix}/tools.nix" { inherit pkgs; })
generatedCargoNix;
# Create the cargo2nix project
project = pkgs.callPackage
(generatedCargoNix {
inherit name;
src = ./.;
})
{
# Individual crate overrides go here
# Example: https://github.com/balsoft/simple-osd-daemons/blob/6f85144934c0c1382c7a4d3a2bbb80106776e270/flake.nix#L28-L50
defaultCrateOverrides = pkgs.defaultCrateOverrides // {
# The app crate itself is overriden here. Typically we
# configure non-Rust dependencies (see below) here.
${name} = oldAttrs: {
inherit buildInputs nativeBuildInputs;
} // buildEnvVars;
};
};
# Configuration for the non-Rust dependencies
buildInputs = with pkgs; [ openssl.dev cmake ];
nativeBuildInputs = with pkgs; [ rustc cargo pkgconfig nixpkgs-fmt ];
buildEnvVars = {
PKG_CONFIG_PATH = "${pkgs.openssl.dev}/lib/pkgconfig";
};
in
rec {
packages.${name} = project.rootCrate.build;
# `nix build`
defaultPackage = packages.${name};
# `nix run`
apps.${name} = utils.lib.mkApp {
inherit name;
drv = packages.${name};
};
defaultApp = apps.${name};
# `nix develop`
devShell = pkgs.mkShell
{
inherit buildInputs nativeBuildInputs;
RUST_SRC_PATH = "${pkgs.rust.packages.stable.rustPlatform.rustLibSrc}";
} // buildEnvVars;
}
);
}