5 files changed, 191 insertions, 3 deletions

diff --git a/custom/bar-service.nix b/custom/bar-service.nix
new file mode 100644
index 00000000..2a492ce1
--- /dev/null
+++ b/custom/bar-service.nix
@@ -0,0 +1,99 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.services.bar;
+in {
+  options.services.bar = {
+    enable = mkEnableOption "the Bar Inventory System";
+
+    user = mkOption {
+      type = types.str;
+      default = "bar";
+      description = "User to execute the daemon under";
+    };
+
+    group = mkOption {
+      type = types.str;
+      default = "bar";
+      description = "Group to execute the daemon under";
+    };
+
+    stateDir = mkOption {
+      type = types.path;
+      default = "/var/lib/bar";
+      description = "Directory for the daemon to store semi-transient state (encryption keys etc.)";
+    };
+
+    port = mkOption {
+      type = types.int;
+      default = 8080;
+      description = "Port for the daemon to listen on";
+    };
+
+    host = mkOption {
+      type = types.str;
+      default = "localhost";
+      description = "Host to bind to";
+    };
+
+    approot = mkOption {
+      type = types.str;
+      default = "/";
+      description = "Subdirectory of the daemon-managed site relative to HTTP /; only useful when using a reverse proxy";
+    };
+
+    thermoprintBaseURL = mkOption {
+      type = with types; nullOr types.str;
+      default = null;
+      example = "http://localhost:80/thermoprint/api";
+      description = "Thermoprint base url";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    assertions = [
+      { assertion = config.services.postgresql.enable;
+        message = "bar requires PostgreSQL";
+      }
+    ];
+
+    users.users."${cfg.user}" = {
+      group = cfg.group;
+      description = "User for the Bar Inventory System";
+      isSystemUser = true;
+      home = cfg.stateDir;
+      createHome = true;
+    };
+
+    users.groups."${cfg.group}" = {};
+
+    nixpkgs.overlays = [(self: super: {
+      bar = self.callPackage ./bar { inherit (self) haskellPackages; };
+    })];
+
+    systemd.services."bar" = {
+      environment = {
+        PORT = cfg.port;
+        HOST = cfg.host;
+        APPROOT = cfg.approot;
+        IP_FROM_HEADER = cfg.ipFromHeader;
+        TPRINT_BASEURL = mkIf (cfg.thermoprintBaseURL != null) cfg.thermoprintBaseURL;
+      };
+
+      bindsTo = [ "postgresql.service" ];
+      after = [ "postgresql.service" ];
+      wantedBy = [ "default.target" ];
+
+      serviceConfig = {
+        Type = "notify";
+        User = cfg.user;
+        Group = cfg.group;
+        WorkingDirectory = cfg.stateDir;
+
+        ExecStart = with pkgs; "${bar}/bin/bar";
+      };
+    };
+  };
+}
diff --git a/custom/bar/default.nix b/custom/bar/default.nix
new file mode 100644
index 00000000..98b36901
--- /dev/null
+++ b/custom/bar/default.nix
@@ -0,0 +1,47 @@
+{ haskellPackages
+, stdenv
+, fetchFromGitHub
+, fetchurl
+, haskell
+}:
+
+let
+  pkg = haskellPackages.callPackage ./generated.nix {};
+  webshim = stdenv.mkDerivation rec {
+    name = "webshim-${version}";
+    version = "1.16.0";
+    src = fetchFromGitHub {
+      owner = "aFarkas";
+      repo = "webshim";
+      rev = "1.16.0";
+      sha256 = "14pk7hljqipzp0n7vpgcfxr3w4bla57cwyd7bmwmmxrm2zn62cyh";
+    };
+
+    installPhase = ''
+      mkdir -p $out/js
+      cp -r $src/js-webshim/dev/* $out/js/
+    '';
+  };
+  jquery = stdenv.mkDerivation rec {
+    name = "jquery-${version}";
+    version = "3.3.1";
+    src = fetchurl {
+      url = "https://github.com/jquery/jquery/archive/${version}.tar.gz";
+      sha256 = "1d1pilrwiz0yjx27cd7gbn8qar6hw5zgwjhpsyaijcg52z82wi5q";
+    };
+
+    installPhase = ''
+      mkdir -p $out/js
+      cp -r dist/jquery.js $out/js/
+    '';
+  };
+in stdenv.lib.overrideDerivation pkg (drv: {
+  postUnpack = ''
+    (
+      cd bar-*/static
+      rm -rf jquery.js webshim
+      ln -vs ${jquery}/js/jquery.js .
+      ln -vs ${webshim}/js webshim
+    )
+  '';
+})
diff --git a/custom/bar/generated.nix b/custom/bar/generated.nix
new file mode 100644
index 00000000..966924ad
--- /dev/null
+++ b/custom/bar/generated.nix
@@ -0,0 +1,35 @@
+{ mkDerivation, aeson, base, bytestring, case-insensitive
+, classy-prelude, classy-prelude-conduit, classy-prelude-yesod
+, conduit, containers, data-default, directory, fast-logger
+, fetchgit, file-embed, hashids, hjsmin, http-conduit, lens
+, monad-control, monad-logger, mtl, persistent
+, persistent-postgresql, persistent-template, safe, shakespeare
+, stdenv, systemd, template-haskell, text, thermoprint-client, time
+, unordered-containers, vector, wai, wai-extra, wai-logger, warp
+, yaml, yesod, yesod-auth, yesod-core, yesod-form, yesod-static
+}:
+mkDerivation {
+  pname = "bar";
+  version = "0.6.6";
+  src = fetchgit {
+    url = "git://git.yggdrasil.li/gkleen/pub/bar";
+    sha256 = "1nhvmqnsfcj2afbxsqgvdrq97rq7xls7w9w280dg6vyba8gipiwp";
+    rev = "76fe2bc3bf14fb3f4cbd892e680f61183ff6db83";
+  };
+  isLibrary = true;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    aeson base bytestring case-insensitive classy-prelude
+    classy-prelude-conduit classy-prelude-yesod conduit containers
+    data-default directory fast-logger file-embed hashids hjsmin
+    http-conduit lens monad-control monad-logger mtl persistent
+    persistent-postgresql persistent-template safe shakespeare systemd
+    template-haskell text thermoprint-client time unordered-containers
+    vector wai wai-extra wai-logger warp yaml yesod yesod-auth
+    yesod-core yesod-form yesod-static
+  ];
+  executableHaskellDepends = [ base ];
+  doHaddock = false;
+  license = stdenv.lib.licenses.unfree;
+  hydraPlatforms = stdenv.lib.platforms.none;
+}
diff --git a/custom/bar/generated.nix.gup b/custom/bar/generated.nix.gup
new file mode 100644
index 00000000..eeb13ad2
--- /dev/null
+++ b/custom/bar/generated.nix.gup
@@ -0,0 +1,5 @@
+#!/usr/bin/env zsh
+
+gup -u ${2:r}.cabal
+cd ${2:h}
+cabal2nix --no-haddock "git://git.yggdrasil.li/gkleen/pub/bar" >! ${1}
diff --git a/custom/trivmix-service.nix b/custom/trivmix-service.nix
index fc69d93e..f278c7eb 100644
--- a/custom/trivmix-service.nix
+++ b/custom/trivmix-service.nix
@@ -5,8 +5,6 @@ with lib;
 let
   cfg = config.services.trivmix;
 
-  trivmix = pkgs.haskellPackages.callPackage ./trivmix {};
-
   mixerModule = {
     options = {
       connectIn = mkOption {
@@ -117,7 +115,11 @@ in {
   };
 
   config = mkIf (cfg.mixers != {}) {
-    environment.systemPackages = [ trivmix ];
+    nixpkgs.overlays = [(self: super: {
+      trivmix = self.haskellPackages.callPackage ./trivmix {};
+    })];
+
+    environment.systemPackages = with pkgs; [ trivmix ];
   
     systemd.services = mapAttrs service cfg.mixers;
   };