espanso: add option to install Espanso plugins (packages)

This commit introduces support for declaring
[Espanso](https://espanso.org/) packages in Nix.   Packages are
installed to `~/.config/espanso/match/packages/<package-name>`.

Author: Thierry Delafontaine

modules/lib/maintainers.nix

@@ -114,6 +114,14 @@
       }
     ];
   };
+  delafthi = {
+    name = "Thierry Delafontaine";
+    email = "[email protected]";
+    matrix = "@delafthi:matrix.org";
+    github = "delafthi";
+    githubId = 50531499;
+    keys = [ { fingerprint = "24A0 D053 B044 E46D E0BD  F61F F284 24F9 874E 6696"; } ];
+  };
   Dines97 = {
     name = "Denis Kaynar";
     email = "[email protected]";

modules/services/espanso.nix

@@ -52,6 +52,7 @@ in
     lib.hm.maintainers.liyangau
     maintainers.n8henrie
     maintainers.phanirithvij
+    maintainers.delafthi
   ];
   options = {
     services.espanso = {
@@ -155,6 +156,16 @@ in
           for a description of available options.
         '';
       };
+
+      plugins = mkOption {
+        type = with types; listOf package;
+        default = [ ];
+        example = literalExpression "[ pkgs.espansoPlugins.actually-all-emojis-spaces ]";
+        description = ''
+          List of Espanso plugins to install. To get a list of supported plugins run:
+          {command}`nix-env -f '<nixpkgs>' -qaP -A espansoPlugins`.
+        '';
+      };
     };
   };
 
@@ -191,8 +202,16 @@ in
             source = yaml.generate "${name}.yml" value;
           };
         }) cfg.matches;
+        plugins = lib.listToAttrs (
+          lib.map (plugin: {
+            name = "espanso/match/packages/${plugin.pname}";
+            value = {
+              source = plugin;
+            };
+          }) cfg.plugins
+        );
       in
-      configFiles // matchesFiles;
+      configFiles // matchesFiles // plugins;
 
     systemd.user.services.espanso = {
       Unit = {

tests/modules/services/espanso-darwin/basic-configuration.nix

@@ -1,3 +1,4 @@
+{ pkgs, ... }:
 {
   services.espanso = {
     enable = true;
@@ -42,6 +43,9 @@
         ];
       };
     };
+    plugins = [
+      pkgs.espansoPlugins.dummy-package
+    ];
   };
 
   nmt.script = ''

tests/modules/services/espanso/basic-configuration.nix

@@ -1,5 +1,5 @@
 espansoExtraArgs:
-{ config, ... }:
+{ config, pkgs, ... }:
 
 {
   services.espanso = {
@@ -45,6 +45,9 @@ espansoExtraArgs:
         ];
       };
     };
+    plugins = [
+      pkgs.espansoPlugins.dummy-package
+    ];
   } // espansoExtraArgs;
 
   nmt.script = ''