{ pkgs ? import <nixpkgs> {}}:

let
  sinaraSystemsSrc = <sinaraSystemsSrc>;
  artiqVersion = import <artiq-fast/pkgs/artiq-version.nix> {
    inherit (pkgs) stdenv git fetchgit;
  };
  variantsJson =
    let
      jsonFiles =
        builtins.attrNames (
          pkgs.lib.filterAttrs (name: type:
            type != "directory" &&
            builtins.match ".+\\.json" name != null
          ) (builtins.readDir sinaraSystemsSrc)
        );
    in
      builtins.listToAttrs (
        map (jsonFile: {
          name = builtins.replaceStrings [".json"] [""] jsonFile;
          value = builtins.fromJSON (
            builtins.readFile (<sinaraSystemsSrc> + "/${jsonFile}")
          );
        }) jsonFiles
      );
  variants =
    builtins.attrNames (
      pkgs.lib.filterAttrs (_: json:
        pkgs.lib.strings.versionAtLeast artiqVersion (
          if json ? min_artiq_version
          then json.min_artiq_version
          else "0"
        )
      ) variantsJson
    );
  standaloneVariants =
    builtins.attrNames (
      pkgs.lib.filterAttrs (_: json:
        json.base == "standalone"
      ) variantsJson
    );

  generatedNix = pkgs.runCommand "generated-nix" { buildInputs = [ pkgs.nix pkgs.git ]; }
    ''
    mkdir $out

    cp -a ${<artiq-fast>} $out/fast
    cp ${./artiq-full}/artiq-board.nix $out
    cp ${./artiq-full}/generate-identifier.py $out
    cp ${./artiq-full}/conda-artiq-board.nix $out
    cp ${./artiq-full}/extras.nix $out
    cp ${./artiq-full}/*.patch $out

    REV=`git --git-dir ${sinaraSystemsSrc}/.git rev-parse HEAD`
    SINARA_SRC_CLEAN=`mktemp -d`
    cp -a ${sinaraSystemsSrc}/. $SINARA_SRC_CLEAN
    chmod -R 755 $SINARA_SRC_CLEAN/.git
    chmod 755 $SINARA_SRC_CLEAN
    rm -rf $SINARA_SRC_CLEAN/.git
    HASH=`nix-hash --type sha256 --base32 $SINARA_SRC_CLEAN`
    cat > $out/default.nix << EOF
    { pkgs ? import <nixpkgs> {}}:

    let
      artiq-fast = import ./fast { inherit pkgs; };
      ddbDeps = [
        artiq-fast.artiq
        (pkgs.python3.withPackages (ps: [ ps.jsonschema ]))
      ];

      target = "kasli";
      variants = [${builtins.concatStringsSep " " (
        builtins.map (variant: "\"${variant}\"") variants
      )}];
      standaloneVariants = [${builtins.concatStringsSep " " (
        builtins.map (variant: "\"${variant}\"") standaloneVariants
      )}];
      # Splitting the build process into software+gateware does
      # not work when artiq embeds compiled firmware into generated
      # Vivado input.
      boardsWithoutBuildSplit = [
        { target = "sayma"; variant = "rtm"; }
      ];

      vivado = import ./fast/vivado.nix { inherit pkgs; };
      artiq-board-import = path: import path { inherit pkgs vivado; };
      artiq-board = args:
        if pkgs.lib.strings.versionAtLeast artiq-fast.artiq.version "6.0"
        && ! builtins.elem { inherit (args) target variant; } boardsWithoutBuildSplit
        then
          artiq-board-import ./artiq-board.nix args
        else
          artiq-board-import ./fast/artiq-board.nix args;
      conda-artiq-board = import ./conda-artiq-board.nix { inherit pkgs; };
      src = pkgs.fetchgit {
        url = "https://git.m-labs.hk/M-Labs/sinara-systems.git";
        rev = "$REV";
        sha256 = "$HASH";
      };
      generic-kasli = pkgs.lib.lists.foldr (variant: start:
        let
          json = builtins.toPath (src + "/\''${variant}.json");
          boardBinaries = artiq-board {
            inherit target variant;
            src = json;
            buildCommand = "python -m artiq.gateware.targets.kasli_generic \$src";
          };
        in
          start // {
            "artiq-board-\''${target}-\''${variant}" = boardBinaries;
            "conda-artiq-board-\''${target}-\''${variant}" = conda-artiq-board {
              boardBinaries = boardBinaries;
              inherit target variant;
            };
          } // (pkgs.lib.optionalAttrs (builtins.elem variant standaloneVariants) {
            "device-db-\''${target}-\''${variant}" = pkgs.stdenv.mkDerivation {
              name = "device-db-\''${target}-\''${variant}";
              buildInputs = ddbDeps;
              phases = [ "buildPhase" ];
              buildPhase = "
                mkdir \$out
                artiq_ddb_template \''${json} -o \$out/device_db.py
                mkdir \$out/nix-support
                echo file device_db_template \$out/device_db.py >> \$out/nix-support/hydra-build-products
                ";
            };
          })) {} variants;
      drtio-systems = {
      } // (pkgs.lib.optionalAttrs (pkgs.lib.strings.versionAtLeast artiq-fast.artiq.version "6.0") {
        berkeley3 = {
          master = "berkeley3master";
          satellites = {
            "1" = "berkeley3satellite";
          };
        };
        bonn1 = {
          master = "bonn1master";
          satellites = {
            "1" = "bonn1satellite";
          };
        };
        hw2 = {
          master = "hw2master";
          satellites = {
            "1" = "hw2satellite";
          };
        };
        ptb3 = {
          master = "ptb3master";
          satellites = {
            "1" = "ptb3satellite";
          };
        };
        purdue = {
          master = "purduemaster";
          satellites = {
            "1" = "purduesatellite";
          };
        };
        stfc = {
          master = "stfcmaster";
          satellites = {
            "1" = "stfcsatellite";
          };
        };
        wipm7 = {
          master = "wipm7master";
          satellites = {
            "1" = "wipm7satellite";
          };
        };
      });
      drtio-ddbs = pkgs.lib.attrsets.mapAttrs'
        (system: crates: pkgs.lib.attrsets.nameValuePair ("device-db-" + system)
        (pkgs.stdenv.mkDerivation {
          name = "device-db-\''${system}";
          buildInputs = ddbDeps;
          phases = [ "buildPhase" ];
          buildPhase = "
            mkdir \$out
            artiq_ddb_template \
              \''${pkgs.lib.strings.concatStringsSep " " (pkgs.lib.attrsets.mapAttrsToList (dest: desc: "-s " + dest + " " + (src + "/\''${desc}.json")) crates.satellites) } \
              \''${src}/\''${crates.master}.json -o \$out/device_db.py
            mkdir \$out/nix-support
            echo file device_db_template \$out/device_db.py >> \$out/nix-support/hydra-build-products
            ";
        })) drtio-systems;
      extras = import ./extras.nix { inherit pkgs; inherit (artiq-fast) sipyco asyncserial artiq; };
    in
      artiq-fast // generic-kasli // drtio-ddbs // extras // rec {
        artiq-board-sayma-rtm = artiq-board {
          target = "sayma";
          variant = "rtm";
          buildCommand = "python -m artiq.gateware.targets.sayma_rtm";
        };
        artiq-board-sayma-satellite = artiq-board {
          target = "sayma";
          variant = "satellite";
          buildCommand = "python -m artiq.gateware.targets.sayma_amc";
        };
        artiq-board-metlino-master = artiq-board {
          target = "metlino";
          variant = "master";
          buildCommand = "python -m artiq.gateware.targets.metlino";
        };
        artiq-board-kc705-nist_qc2 = artiq-board {
          target = "kc705";
          variant = "nist_qc2";
        };

        conda-artiq-board-sayma-rtm = conda-artiq-board {
          target = "sayma";
          variant = "rtm";
          boardBinaries = artiq-board-sayma-rtm;
        };
        conda-artiq-board-sayma-satellite = conda-artiq-board {
          target = "sayma";
          variant = "satellite";
          boardBinaries = artiq-board-sayma-satellite;
        };
        conda-artiq-board-metlino-master = conda-artiq-board {
          target = "metlino";
          variant = "master";
          boardBinaries = artiq-board-metlino-master;
        };
        conda-artiq-board-kasli-tester = conda-artiq-board {
          target = "kasli";
          variant = "tester";
          boardBinaries = artiq-fast.artiq-board-kasli-tester;
        };
        conda-artiq-board-kc705-nist_clock = conda-artiq-board {
          target = "kc705";
          variant = "nist_clock";
          boardBinaries = artiq-fast.artiq-board-kc705-nist_clock;
        };
        conda-artiq-board-kc705-nist_qc2 = conda-artiq-board {
          target = "kc705";
          variant = "nist_qc2";
          boardBinaries = artiq-board-kc705-nist_qc2;
        };
      } // (pkgs.lib.optionalAttrs (pkgs.lib.strings.versionAtLeast artiq-fast.artiq.version "6.0") rec {
        artiq-board-sayma-satellite-st = artiq-board {
          target = "sayma";
          variant = "satellite";
          buildCommand = "python -m artiq.gateware.targets.sayma_amc --jdcg-type syncdds";
        };
      })
    EOF
    '';
  pythonDeps = import ./artiq-full/python-deps.nix { inherit pkgs; };
  sipycoManualPackages = import ./artiq-full/sipyco-manual.nix {
    inherit (pkgs) stdenv lib python3Packages texlive texinfo;
    inherit (import <artiq-fast> { inherit pkgs; }) sipyco;
  };
  artiqManualPackages = import ./artiq-full/artiq-manual.nix {
    inherit (pkgs) stdenv lib fetchgit git python3Packages texlive texinfo;
    inherit (pythonDeps) sphinxcontrib-wavedrom;
  };
  artiq-full = import generatedNix { inherit pkgs; };
  exampleUserEnv = import ./artiq-full/example-user-env.nix { inherit pkgs artiq-full; };
  jobs = artiq-full // sipycoManualPackages // artiqManualPackages // exampleUserEnv;
in
  builtins.mapAttrs (key: value: pkgs.lib.hydraJob value) jobs // {
    artiq-full = pkgs.releaseTools.channel {
      name = "artiq-full";
      src = generatedNix;
      constituents = [];
    };
    conda-channel = import ./artiq-full/conda-channel.nix { inherit pkgs; } { inherit jobs; };
  }