{
  description = "Improvise — Multi-Dimensional Data Modeling Terminal Application";

  inputs = {
    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
    rust-overlay = {
      url = "github:oxalica/rust-overlay";
    };
    flake-utils.url = "github:numtide/flake-utils";
  };

  outputs = {
    self,
    nixpkgs,
    rust-overlay,
    flake-utils,
  }:
    flake-utils.lib.eachDefaultSystem (system: let
      overlays = [(import rust-overlay)];
      pkgs = import nixpkgs {inherit system overlays;};
      isLinux = pkgs.lib.hasInfix "linux" system;

      rustToolchain = pkgs.rust-bin.stable.latest.default.override {
        extensions = ["rust-src" "clippy" "rustfmt"];
        targets = pkgs.lib.optionals isLinux ["x86_64-unknown-linux-musl"];
      };
    in {
      devShells.default = pkgs.mkShell ({
          nativeBuildInputs =
            [
              rustToolchain
              pkgs.pkg-config
              pkgs.rust-analyzer
            ]
            ++ pkgs.lib.optionals isLinux [
              # Provide cc (gcc) for building proc-macro / build-script crates
              # that target the host (x86_64-unknown-linux-gnu).
              pkgs.gcc
              # musl-gcc wrapper for the static musl target.
              pkgs.pkgsMusl.stdenv.cc
            ];

          RUST_BACKTRACE = "1";
        }
        // pkgs.lib.optionalAttrs isLinux {
          # Tell Cargo which linker to use for each target so it never
          # falls back to rust-lld (which can't find glibc on NixOS).
          CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER = "${pkgs.gcc}/bin/gcc";
          CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER = "${pkgs.pkgsMusl.stdenv.cc}/bin/cc";

          # Default build target: static musl binary.
          CARGO_BUILD_TARGET = "x86_64-unknown-linux-musl";
        });

      packages.default =
        if isLinux
        then
          (pkgs.pkgsMusl.makeRustPlatform {
            cargo = rustToolchain;
            rustc = rustToolchain;
          }).buildRustPackage {
            pname = "improvise";
            version = "0.1.0";
            src = ./.;
            cargoLock.lockFile = ./Cargo.lock;
          }
        else
          (pkgs.makeRustPlatform {
            cargo = rustToolchain;
            rustc = rustToolchain;
          }).buildRustPackage {
            pname = "improvise";
            version = "0.1.0";
            src = ./.;
            cargoLock.lockFile = ./Cargo.lock;
          };
    });
}