dyesub-tool/flake.nix

/*
Some utility commands:
- `nix flake update --commit-lock-file`
- `nix flake lock update-input <input>`
- `nix build .#dyesub-tool`
- `nix run .#dyesub-tool`

Updating `cargoHash`:
- Set `cargoHash` to an empty string
- run `nix run .#dyesub-tool`
- Update `cargoHash` with correct hash from output
*/

{
  description = "A tool for generating dye sublimation transfer sheet SVGs for Japanese thumb shift 拇指シフト keycaps.";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    rust-overlay.url = "github:oxalica/rust-overlay";
    crane = {
      url = "github:ipetkov/crane";
      inputs.nixpkgs.follows = "nixpkgs";
    };
  };

  outputs = { self, nixpkgs, rust-overlay, crane }:
    let
      overlays = [ (import rust-overlay) ];
      system = "x86_64-linux";
      pkgs = import nixpkgs {
        inherit system overlays;
      };
      # nightly is required for function signal syntax in leptos
      # https://leptos-rs.github.io/leptos/02_getting_started.html
      rust = pkgs.rust-bin.nightly.latest;
      # binary for output binary derivations
      # (doesn't include dev tooling e.g. clippy)
      rust-bin = rust.minimal;
      rustPlatform = pkgs.makeRustPlatform {
        cargo = rust-bin;
        rustc = rust-bin;
      };
      rustSettings = with pkgs; {
        src = ./.;
        cargoHash = nixpkgs.lib.fakeHash;
      };
      meta = with nixpkgs.lib; {
        license = [ licenses.gpl3 ];
        platforms = [ system ];
        maintainers = with maintainers; [ elnudev ];
      };
    in {
      devShells.${system}.default = with pkgs; mkShell {
        packages = [
          (rust.default.override {
            extensions = [ "rust-src" ];
            targets = [ "wasm32-unknown-unknown" ];
          })
          bacon
        ];
        inputsFrom = with self.packages.${system}; [ dyesub-tool dyesub-cli ];
      };
      packages.${system} = {
        default = self.packages.${system}.dyesub-cli;
        dyesub-cli = rustPlatform.buildRustPackage (rustSettings // {
          pname = "dyesub-cli";
          version = "0.1.0";
          buildAndTestSubdir = "dyesub-cli";
          cargoHash = "sha256-S4GvLg/B/FxjNyrQyBg25OMTgJVVBwPO+Dy/EFM4WoQ=";
          meta = meta // {
            description = "A tool for generating dye sublimation transfer sheet SVGs for Japanese thumb shift 拇指シフト keycaps.";
          };
        });
        dyesub-tool = let
          rustToolchain = rust.minimal.override {
            targets = [ "wasm32-unknown-unknown" ];
          };
          craneLib = ((crane.mkLib pkgs).overrideToolchain rustToolchain).overrideScope' (final: prev: {
            wasm-bindgen-cli = pkgs.wasm-bindgen-cli;
          });
          crateNameFromCargoToml = packageName: craneLib.crateNameFromCargoToml { cargoToml = ./${packageName}/Cargo.toml; };
        in craneLib.buildTrunkPackage {
          inherit (crateNameFromCargoToml "dyesub-tool") pname version;
          src = with pkgs.lib; cleanSourceWith {
            src = ./.;
            filter = path: type:
              (hasSuffix "\.html" path) ||
              (hasSuffix "\.css" path) ||
              (craneLib.filterCargoSources path type)
            ;
          };
          trunkIndexPath = "dyesub-tool/index.html";
          meta = meta // {
            description = "A tool for generating dye sublimation transfer sheet SVGs for Japanese thumb shift 拇指シフト keycaps.";
          };
        };
      };
    };
}