calibre: add module

modules/programs/calibre.nix

@@ -0,0 +1,44 @@
+{
+  lib,
+  pkgs,
+  config,
+  ...
+}:
+let
+  inherit (lib)
+    types
+    mkIf
+    mkEnableOption
+    mkPackageOption
+    mkOption
+    ;
+
+  cfg = config.programs.calibre;
+in
+{
+  meta.maintainers = with lib.hm.maintainers; [ aguirre-matteo ];
+  options.programs.calibre = {
+    enable = mkEnableOption "calibre";
+    package = mkPackageOption pkgs "calibre" { nullable = true; };
+    plugins = mkOption {
+      type = with types; listOf path;
+      default = [ ];
+      description = "List of plugins to install for calibre";
+    };
+  };
+
+  config = mkIf cfg.enable {
+    home.packages = mkIf (cfg.package != null) [ cfg.package ];
+    xdg.configFile = mkIf (cfg.plugins != [ ]) (
+      let
+        symlinkedPlugins = pkgs.symlinkJoin {
+          name = "calibre-plugins";
+          paths = cfg.plugins;
+        };
+      in
+      lib.mapAttrs' (
+        k: _: lib.nameValuePair "calibre/plugins/${k}" { source = (symlinkedPlugins + "/${k}"); }
+      ) (builtins.readDir symlinkedPlugins)
+    );
+  };
+}