flake.nix

{
  description = "A Nix-flake-based PHP development environment";

  # GitHub URLs for the Nix inputs we're using
  inputs = {
    # Simply the greatest package repository on the planet
    nixpkgs.url = "github:NixOS/nixpkgs";
    # A set of helper functions for using flakes
    flake-utils.url = "github:numtide/flake-utils";
    php-shell.url = "github:loophp/nix-shell";
  };

  outputs = { self, nixpkgs, flake-utils, php-shell }:
    flake-utils.lib.eachDefaultSystem (system:
      let
        pkgs = import nixpkgs { inherit system; };

        php = (php-shell.api.makePhp system {
          php = "php81";
          withExtensions = [ "pcov" "xdebug" ];
          withoutExtensions = [ "sodium" ];
          extraConfig = ''
            memory_limit=-1
          '';
          flags = {
            apxs2Support = false;
            ztsSupport = false;
          };
        });

        phpTools = with php.packages; [ composer ];
      in {
        devShells = {
          default = pkgs.mkShell {
            # Packages included in the environment
            buildInputs = [ php ] ++ phpTools;

            # Run when the shell is started up
            shellHook = ''
              ${php}/bin/php --version
            '';
          };
        };
      });
}