{
  inputs = {
    # nixpkgs 35.11 still contains rust 1.73
		nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";

    fenix = {
      url = "github:nix-community/fenix";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    crane = {
      url = "github:ipetkov/crane";
    };

    rust-overlay = {
      url = "github:oxalica/rust-overlay";
      inputs.nixpkgs.follows = "nixpkgs";
    };

    mize_modules = {
      url = "github:c2vi/mize-modules?submodules=1";
      flake = false;
    };

 		flake-utils.url = "github:numtide/flake-utils";
  };
  outputs = { self, flake-utils, nixpkgs, fenix, crane, mize_modules, rust-overlay, ... }@inputs: flake-utils.lib.eachDefaultSystem (system: 

############################## LET BINDINGS ##############################
let
  pkgs = nixpkgs.legacyPackages.${system};
  
  #os
  osToolchain = fenix.packages.${system}.latest.toolchain;
  osCrane = (crane.mkLib pkgs).overrideToolchain osToolchain;

  # mize build time config
  mizeBuildConfig = {
    config = {
      namespace = "mize.buildtime.ns";
      module_url = "parts.mize.works";
    };
  };


in {
############################## PACKAGES ##############################

    packages = rec {

      fileSetForCrate =
        crate:
        pkgs.lib.fileset.toSource {
          root = ./.;
          fileset = pkgs.lib.fileset.unions [
            ./Cargo.toml
            ./Cargo.lock
            (osCrane.fileset.commonCargoSources ./packages/marts)
            (osCrane.fileset.commonCargoSources ./packages/mize)
            (osCrane.fileset.commonCargoSources ./packages/ppc/spacetimedb)
            (osCrane.fileset.commonCargoSources ./packages/mme)
            (osCrane.fileset.commonCargoSources ./packages/vic)
            (osCrane.fileset.commonCargoSources ./packages/ac_mize_macros)
            (osCrane.fileset.commonCargoSources crate)
          ];
        };
        
      ppc = osCrane.buildPackage {
        src = fileSetForCrate ./packages/ppc;
        cargoExtraArgs = "-p ppc";
        nativeBuildInputs = [
          pkgs.pkg-config
          pkgs.gobject-introspection
          pkgs.gobject-introspection.dev
        ];
  
        buildInputs = with pkgs; [
          git # needed to build spacetimedb as it needs to get it's git hash for setting it's version
          at-spi2-atk
          atkmm
          cairo
          gdk-pixbuf
          glib
          gtk3
          harfbuzz
          librsvg
          libsoup_3
          pango
          webkitgtk_4_1
          openssl
          wasm-bindgen-cli
          lld_20
          xdotool
        ];
        
        LD_LIBRARY_PATH = with pkgs; pkgs.lib.makeLibraryPath [ 
          xdotool 
          webkitgtk_4_1
          pango
          openssl
          at-spi2-atk
          atkmm
          cairo
          gdk-pixbuf
          glib
          gtk3
          harfbuzz
          librsvg
          libsoup_3
        ];
      };
    };

############################## DEV SHELLS ##############################
    devShells = {

      # shell without spacetime and other dev commands. just all needed to build mize or ppc
      buildShell = pkgs.mkShell {
    
        MIZE_BUILD_CONFIG = let
          settingsFormat = pkgs.formats.toml { };
        in settingsFormat.generate "mize-build-config.toml" {
          config = mizeBuildConfig;
        };
        shellHook = ''
          mize_project_root=$(${pkgs.lib.getExe pkgs.git} rev-parse --show-toplevel)
          export MIZE_CONFIG_FILES=$mize_project_root/mize_config.toml
        '';
        nativeBuildInputs = [
          pkgs.wasm-pack
          pkgs.pkg-config
          pkgs.gobject-introspection
          pkgs.gobject-introspection.dev
          
          # thanks to: https://github.com/NixOS/nixpkgs/pull/496279/changes
          (pkgs.buildWasmBindgenCli rec {
            src = pkgs.fetchCrate {
              pname = "wasm-bindgen-cli";
              version = "0.2.114";
              hash = "sha256-xrCym+rFY6EUQFWyWl6OPA+LtftpUAE5pIaElAIVqW0=";
            };
          
            cargoDeps = pkgs.rustPlatform.fetchCargoVendor {
              inherit src;
              inherit (src) pname version;
              hash = "sha256-Z8+dUXPQq7S+Q7DWNr2Y9d8GMuEdSnq00quUR0wDNPM=";
            };
          })
          (fenix.packages.${system}.combine [ 
            fenix.packages.${system}.latest.toolchain
            fenix.packages.${system}.targets.wasm32-unknown-unknown.latest.toolchain
          ])
        ];
  
      buildInputs = with pkgs; [
        at-spi2-atk
        atkmm
        cairo
        gdk-pixbuf
        glib
        gtk3
        harfbuzz
        librsvg
        libsoup_3
        pango
        webkitgtk_4_1
        openssl
        wasm-bindgen-cli
        lld_20
        xdotool
      ];
      
      LD_LIBRARY_PATH = with pkgs; pkgs.lib.makeLibraryPath [ 
        xdotool 
        webkitgtk_4_1
        pango
        openssl
        at-spi2-atk
        atkmm
        cairo
        gdk-pixbuf
        glib
        gtk3
        harfbuzz
        librsvg
        libsoup_3
      ];
        
    };
      default = pkgs.mkShell {
    
        MIZE_BUILD_CONFIG = let
          settingsFormat = pkgs.formats.toml { };
        in settingsFormat.generate "mize-build-config.toml" {
          config = mizeBuildConfig;
        };
        shellHook = ''
          mize_project_root=$(${pkgs.lib.getExe pkgs.git} rev-parse --show-toplevel)
          export MIZE_CONFIG_FILES=$mize_project_root/mize_config.toml
        '';
        #_shell_type = "rust";
        nativeBuildInputs = [
          pkgs.wasm-pack
          pkgs.dioxus-cli
          pkgs.spacetimedb
          pkgs.deno
          pkgs.pkg-config
          pkgs.gobject-introspection
          pkgs.gobject-introspection.dev
          
          # thanks to: https://github.com/NixOS/nixpkgs/pull/496279/changes
          (pkgs.buildWasmBindgenCli rec {
            src = pkgs.fetchCrate {
              pname = "wasm-bindgen-cli";
              version = "0.2.114";
              hash = "sha256-xrCym+rFY6EUQFWyWl6OPA+LtftpUAE5pIaElAIVqW0=";
            };
          
            cargoDeps = pkgs.rustPlatform.fetchCargoVendor {
              inherit src;
              inherit (src) pname version;
              hash = "sha256-Z8+dUXPQq7S+Q7DWNr2Y9d8GMuEdSnq00quUR0wDNPM=";
            };
          })
          (fenix.packages.${system}.combine [ 
            fenix.packages.${system}.latest.toolchain
            fenix.packages.${system}.targets.wasm32-unknown-unknown.latest.toolchain
          ])
        ];
  
      buildInputs = with pkgs; [
        at-spi2-atk
        atkmm
        cairo
        gdk-pixbuf
        glib
        gtk3
        harfbuzz
        librsvg
        libsoup_3
        pango
        webkitgtk_4_1
        openssl
        wasm-bindgen-cli
        lld_20
        xdotool
      ];
      
      LD_LIBRARY_PATH = with pkgs; pkgs.lib.makeLibraryPath [ 
        xdotool 
        webkitgtk_4_1
        pango
        openssl
        at-spi2-atk
        atkmm
        cairo
        gdk-pixbuf
        glib
        gtk3
        harfbuzz
        librsvg
        libsoup_3
      ];
        
    };
    };

  }) // {

############################## SOME GLOBAL OUTPUTS ##############################
    inherit inputs self;
  };
}