abook: add module

PR #1058

modules/misc/news.nix

@@ -1333,6 +1333,13 @@ in
           A new module is available: 'wayland.windowManager.sway'
         '';
       }
+      {
+        time = "2020-03-04T18:55:03+00:00";
+        condition = hostPlatform.isLinux;
+        message = ''
+          A new module is available: 'programs.abook'
+        '';
+      }
     ];
   };
 }

modules/modules.nix

@@ -37,6 +37,7 @@ let
     (loadModule ./misc/xdg-mime-apps.nix { condition = hostPlatform.isLinux; })
     (loadModule ./misc/xdg-user-dirs.nix { condition = hostPlatform.isLinux; })
     (loadModule ./misc/xdg.nix { })
+    (loadModule ./programs/abook.nix { condition = hostPlatform.isLinux; })
     (loadModule ./programs/afew.nix { })
     (loadModule ./programs/alacritty.nix { })
     (loadModule ./programs/alot.nix { })

modules/programs/abook.nix

@@ -0,0 +1,40 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+
+  cfg = config.programs.abook;
+
+in {
+  options.programs.abook = {
+    enable = mkEnableOption "Abook";
+
+    extraConfig = mkOption {
+      type = types.lines;
+      default = "";
+      example = ''
+        field pager = Pager
+        view CONTACT = name, email
+        set autosave=true
+      '';
+      description = ''
+        Extra lines added to <filename>$HOME/.config/abook/abookrc</filename>.
+        Available configuration options are described in the abook repository:
+        <link xlink:href="https://sourceforge.net/p/abook/git/ci/master/tree/sample.abookrc" />.
+      '';
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = [ pkgs.abook ];
+    xdg.configFile."abook/abookrc" = mkIf (cfg.extraConfig != "") {
+      text = ''
+        # Generated by Home Manager.
+        # See http://abook.sourceforge.net/
+
+        ${cfg.extraConfig}
+      '';
+    };
+  };
+}