{
  description = "NixOS flake for my website";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    systems.url = "github:nix-systems/x86_64-linux";

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

    # inputs for following
    flake-compat = {
      url = "github:edolstra/flake-compat";
      flake = false;
    };
    flake-utils = {
      url = "github:numtide/flake-utils";
      inputs = {
        systems.follows = "systems";
      };
    };
    lpm = {
      url = "git+https://codeberg.org/bpeetz/lpm.git";
      inputs = {
        systems.follows = "systems";
        rust-overlay.follows = "rust-overlay";
        nixpkgs.follows = "nixpkgs";
        crane.follows = "crane";
        flake-utils.follows = "flake-utils";
        flake-compat.follows = "flake-compat";
      };
    };
    flake_version_update = {
      url = "git+https://codeberg.org/soispha/flake_version_update.git";
      inputs = {
        systems.follows = "systems";
        nixpkgs.follows = "nixpkgs";
        flake-utils.follows = "flake-utils";
      };
    };
    treefmt-nix = {
      url = "github:numtide/treefmt-nix";
      inputs = {
        nixpkgs.follows = "nixpkgs";
      };
    };

    # data
    essay = {
      url = "git+https://codeberg.org/bpeetz/kant_and_free_software.git";
      inputs = {
        crane.follows = "crane";
        flake-compat.follows = "flake-compat";
        flake-utils.follows = "flake-utils";
        flake_version_update.follows = "flake_version_update";
        lpm.follows = "lpm";
        nixpkgs.follows = "nixpkgs";
        rust-overlay.follows = "rust-overlay";
        systems.follows = "systems";
      };
    };
    facharbeit = {
      url = "git+https://codeberg.org/bpeetz/facharbeit.git";
      inputs = {
        crane.follows = "crane";
        flake-compat.follows = "flake-compat";
        flake-utils.follows = "flake-utils";
        flake_version_update.follows = "flake_version_update";
        lpm.follows = "lpm";
        treefmt-nix.follows = "treefmt-nix";
        nixpkgs.follows = "nixpkgs";
        rust-overlay.follows = "rust-overlay";
        systems.follows = "systems";
      };
    };
  };

  outputs = {
    self,
    essay,
    facharbeit,
    flake-utils,
    nixpkgs,
    treefmt-nix,
    ...
  }:
    flake-utils.lib.eachDefaultSystem (
      system: let
        pkgs = nixpkgs.legacyPackages.${system};
        treefmtEval = import ./treefmt.nix {inherit treefmt-nix pkgs;};
        build = pkgs.stdenv.mkDerivation {
          pname = "b-peetz.de";
          version = "v1.0";
          src = ./src;

          # Run local
          preferLocalBuild = true;
          allowSubstitutes = false;

          nativeBuildInputs = [];
          buildPhase = ''
            mkdir --parents ./dead-trees{,/chemistry,/philosophy}

            install -D ${essay.outputs.packages."${system}".default}/philosophy/kant_and_free_software.pdf ./writings/philosophy/kant_and_free_software.pdf
            # NOTE: This link is for backward compatibility, as I have given out links with that url <2024-07-13>
            ln --symbolic --relative ./writings/philosophy/kant_and_free_software.pdf ./dead-trees/kant_and_free_software.pdf
            ln --symbolic --relative ./writings/philosophy/kant_and_free_software.pdf ./dead-trees/philosophy/kant_and_free_software.pdf

            install -D ${facharbeit.outputs.packages."${system}".default}/chemistry/facharbeit.pdf ./writings/chemistry/facharbeit.pdf
            # NOTE: This link is for backward compatibility, as I have given out links with that url <2024-07-13>
            ln --symbolic --relative ./writings/chemistry/facharbeit.pdf ./dead-trees/raman_spectrometer.pdf
            ln --symbolic --relative ./writings/chemistry/facharbeit.pdf ./dead-trees/chemistry/facharbeit.pdf
          '';
          installPhase = ''
            install -d $out/
            cp --recursive . $out/
          '';
        };
      in {
        packages = {
          default = build;
        };

        checks = {
          inherit build;
          formatting = treefmtEval.config.build.check self;
        };

        formatter = treefmtEval.config.build.wrapper;

        devShells = {
          default = pkgs.mkShell {
            packages = [];
          };
        };
      }
    );
}
# vim: ts=2