alot: add structured settings

- Also support tags.

- Optionally write the hooks file.

PR #812

modules/programs/alot.nix

@@ -12,6 +12,55 @@ let
 
   boolStr = v: if v then "True" else "False";
 
+  mkKeyValue = key: value:
+    let
+      value' =
+        if isBool value then boolStr value
+        else toString value;
+    in
+      "${key} = ${value'}";
+
+  mk2ndLevelSectionName = name:  "[" + name + "]";
+
+  tagSubmodule = types.submodule {
+    options = {
+      translated = mkOption {
+        type = types.nullOr types.str;
+        description = ''
+          Fixed string representation for this tag. The tag can be
+          hidden from view, if the key translated is set to
+          <literal>""</literal>, the empty string.
+        '';
+      };
+
+      translation = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = ''
+          A pair of strings that define a regular substitution to
+          compute the string representation on the fly using
+          <literal>re.sub</literal>.
+        '';
+      };
+
+      normal = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        example = "'','', 'white','light red', 'white','#d66'";
+        description = ''
+          How to display the tag when unfocused.
+          See <link xlink:href="https://alot.readthedocs.io/en/latest/configuration/theming.html#tagstring-formatting"/>.
+        '';
+      };
+
+      focus = mkOption {
+        type = types.nullOr types.str;
+        default = null;
+        description = "How to display the tag when focused.";
+      };
+  };
+  };
+
   accountStr = account: with account;
     concatStringsSep "\n" (
       [ "[[${name}]]" ]
@@ -41,7 +90,7 @@ let
       ++ [ alot.extraConfig ]
       ++ [ "[[[abook]]]" ]
       ++ mapAttrsToList (n: v: n + "=" + v) alot.contactCompletion
-    );
+      );
 
   configFile =
     let
@@ -52,8 +101,19 @@ let
         # Generated by Home Manager.
         # See http://alot.readthedocs.io/en/latest/configuration/config_options.html
 
+        ${generators.toKeyValue { inherit mkKeyValue; } cfg.settings}
         ${cfg.extraConfig}
-
+        [tags]
+      ''
+      + (
+        let
+          submoduleToAttrs = m:
+            filterAttrs (name: v: name != "_module" && v != null) m;
+        in
+            generators.toINI { mkSectionName = mk2ndLevelSectionName; }
+                            (mapAttrs (name: x: submoduleToAttrs x) cfg.tags)
+      )
+      + ''
         [bindings]
         ${bindingsToStr cfg.bindings.global}
 
@@ -142,17 +202,39 @@ in
       '';
     };
 
+    tags = mkOption {
+      type = types.attrsOf tagSubmodule;
+      default = {};
+      description = "How to display the tags.";
+    };
+
+    settings = mkOption {
+      type = with types;
+        let
+          primitive = either (either (either str int) bool) float;
+        in
+          attrsOf primitive;
+      default = {
+        initial_command = "search tag:inbox AND NOT tag:killed";
+        auto_remove_unread = true;
+        handle_mouse = true;
+        prefer_plaintext = true;
+      };
+      example = literalExample ''
+        {
+          auto_remove_unread = true;
+          ask_subject = false;
+          thread_indent_replies = 2;
+        }
+      '';
+      description = ''
+        Configuration options added to alot configuration file.
+      '';
+    };
+
     extraConfig = mkOption {
       type = types.lines;
-      default = ''
+      default = "";
-        auto_remove_unread = True
-        ask_subject = False
-        handle_mouse = True
-        initial_command = "search tag:inbox AND NOT tag:killed"
-        input_timeout = 0.3
-        prefer_plaintext = True
-        thread_indent_replies = 4
-      '';
       description = ''
         Extra lines added to alot configuration file.
       '';
@@ -164,10 +246,11 @@ in
 
     xdg.configFile."alot/config".text = configFile;
 
-    xdg.configFile."alot/hooks.py".text =
+    xdg.configFile."alot/hooks.py" = mkIf (cfg.hooks != "") {
-      ''
+      text = ''
         # Generated by Home Manager.
       ''
       + cfg.hooks;
+    };
   };
 }

tests/default.nix

@@ -35,6 +35,7 @@ import nmt {
     ./modules/home-environment
     ./modules/misc/fontconfig
     ./modules/programs/alacritty
+    ./modules/programs/alot
     ./modules/programs/bash
     ./modules/programs/browserpass
     ./modules/programs/fish

tests/modules/programs/alot/alot-expected.conf

@@ -0,0 +1,37 @@
+# Generated by Home Manager.
+# See http://alot.readthedocs.io/en/latest/configuration/config_options.html
+
+auto_remove_unread = True
+handle_mouse = True
+initial_command = search tag:inbox AND NOT tag:killed
+prefer_plaintext = True
+
+
+[tags]
+[bindings]
+
+
+[[bufferlist]]
+
+[[search]]
+
+[[envelope]]
+
+[[taglist]]
+
+[[thread]]
+
+
+[accounts]
+
+[[hm@example.com]]
+address=hm@example.com
+draft_box=maildir:///home/hm-user/Mail/hm@example.com/Drafts
+realname=H. M. Test
+sendmail_command=
+sent_box=maildir:///home/hm-user/Mail/hm@example.com/Sent
+auto_remove_unread = True
+ask_subject = False
+handle_mouse = True
+
+[[[abook]]]

tests/modules/programs/alot/alot.nix

@@ -0,0 +1,36 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+{
+  imports = [ ../../accounts/email-test-accounts.nix ];
+
+  config = {
+    accounts.email.accounts = {
+      "hm@example.com" = {
+        primary = true;
+        notmuch.enable = true;
+        alot = {
+          contactCompletion = { };
+          extraConfig = ''
+            auto_remove_unread = True
+            ask_subject = False
+            handle_mouse = True
+          '';
+        };
+        imap.port = 993;
+      };
+    };
+
+    programs.alot = { enable = true; };
+
+    nixpkgs.overlays =
+      [ (self: super: { alot = pkgs.writeScriptBin "dummy-alot" ""; }) ];
+
+    nmt.script = ''
+      assertFileExists home-files/.config/alot/config
+      assertFileContent home-files/.config/alot/config ${./alot-expected.conf}
+    '';
+  };
+}
+

tests/modules/programs/alot/default.nix

@@ -0,0 +1 @@
+{ alot = ./alot.nix; }