treewide: begin restructuring the module tree

modules/plugins/session/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./nvim-session-manager
+  ];
+}

modules/plugins/session/nvim-session-manager/config.nix

@@ -0,0 +1,35 @@
+{
+  config,
+  lib,
+  ...
+}: let
+  inherit (lib) mkIf optionals mkMerge mkBinding nvim;
+  inherit (lib.nvim.lua) toLuaObject;
+
+  cfg = config.vim.session.nvim-session-manager;
+in {
+  config = mkIf cfg.enable {
+    vim = {
+      startPlugins =
+        [
+          "nvim-session-manager"
+          "plenary-nvim"
+        ]
+        ++ optionals cfg.usePicker ["dressing-nvim"];
+
+      maps.normal = mkMerge [
+        (mkBinding cfg.mappings.loadSession ":SessionManager load_session<CR>" "Load session")
+        (mkBinding cfg.mappings.deleteSession ":SessionManager delete_session<CR>" "Delete session")
+        (mkBinding cfg.mappings.saveCurrentSession ":SessionManager save_current_session<CR>" "Save current session")
+        (mkBinding cfg.mappings.loadLastSession ":SessionManager load_last_session<CR>" "Load last session")
+        # TODO: load_current_dir_session
+      ];
+
+      luaConfigRC.nvim-session-manager = nvim.dag.entryAnywhere ''
+        local Path = require('plenary.path')
+        local sm = require('session_manager.config')
+        require('session_manager').setup(${toLuaObject cfg.setupOpts})
+      '';
+    };
+  };
+}

modules/plugins/session/nvim-session-manager/default.nix

@@ -0,0 +1,6 @@
+{
+  imports = [
+    ./nvim-session-manager.nix
+    ./config.nix
+  ];
+}

modules/plugins/session/nvim-session-manager/nvim-session-manager.nix

@@ -0,0 +1,118 @@
+{lib, ...}: let
+  inherit (lib.types) nullOr str bool;
+  inherit (lib) mkEnableOption mkOption types mkRenamedOptionModule;
+in {
+  imports = let
+    renameSetupOpt = oldPath: newPath:
+      mkRenamedOptionModule (["vim" "session" "nvim-session-manager"] ++ oldPath) (["vim" "session" "nvim-session-manager" "setupOpts"] ++ newPath);
+  in [
+    (renameSetupOpt ["pathReplacer"] ["path_replacer"])
+    (renameSetupOpt ["colonReplacer"] ["colon_replacer"])
+    (renameSetupOpt ["autoloadMode"] ["autoload_mode"])
+    (renameSetupOpt ["maxPathLength"] ["max_path_length"])
+    (renameSetupOpt ["autoSave" "lastSession"] ["autosave_last_session"])
+    (renameSetupOpt ["autoSave" "ignoreNotNormal"] ["autosave_ignore_not_normal"])
+    (renameSetupOpt ["autoSave" "ignoreDirs"] ["autosave_ignore_dirs"])
+    (renameSetupOpt ["autoSave" "ignoreFiletypes"] ["autosave_ignore_filetypes"])
+    (renameSetupOpt ["autoSave" "ignoreBufTypes"] ["autosave_ignore_buftypes"])
+    (renameSetupOpt ["autoSave" "onlyInSession"] ["autosave_only_in_session"])
+  ];
+
+  options.vim.session.nvim-session-manager = {
+    enable = mkEnableOption "nvim-session-manager: manage sessions like folders in VSCode";
+
+    mappings = {
+      loadSession = mkOption {
+        type = nullOr str;
+        description = "Load session";
+        default = "<leader>sl";
+      };
+
+      deleteSession = mkOption {
+        type = nullOr str;
+        description = "Delete session";
+        default = "<leader>sd";
+      };
+
+      saveCurrentSession = mkOption {
+        type = nullOr str;
+        description = "Save current session";
+        default = "<leader>sc";
+      };
+
+      loadLastSession = mkOption {
+        type = nullOr str;
+        description = "Load last session";
+        default = "<leader>slt";
+      };
+    };
+
+    usePicker = mkOption {
+      type = bool;
+      default = true;
+      description = "Whether or not we should use dressing.nvim to build a session picker UI";
+    };
+
+    setupOpts = {
+      path_replacer = mkOption {
+        type = types.str;
+        default = "__";
+        description = "The character to which the path separator will be replaced for session files";
+      };
+
+      colon_replacer = mkOption {
+        type = types.str;
+        default = "++";
+        description = "The character to which the colon symbol will be replaced for session files";
+      };
+
+      autoload_mode = mkOption {
+        type = types.enum ["Disabled" "CurrentDir" "LastSession"];
+        default = "LastSession";
+        description = "Define what to do when Neovim is started without arguments. Possible values: Disabled, CurrentDir, LastSession";
+      };
+
+      max_path_length = mkOption {
+        type = types.nullOr types.int;
+        default = 80;
+        description = "Shorten the display path if length exceeds this threshold. Use 0 if don't want to shorten the path at all";
+      };
+
+      autosave_last_session = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Automatically save last session on exit and on session switch";
+      };
+
+      autosave_ignore_not_normal = mkOption {
+        type = types.bool;
+        default = true;
+        description = "Plugin will not save a session when no buffers are opened, or all of them aren't writable or listed";
+      };
+
+      autosave_ignore_dirs = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        description = "A list of directories where the session will not be autosaved";
+      };
+
+      autosave_ignore_filetypes = mkOption {
+        type = types.listOf types.str;
+        default = ["gitcommit"];
+        description = "All buffers of these file types will be closed before the session is saved";
+      };
+
+      autosave_ignore_buftypes = mkOption {
+        type = types.listOf types.str;
+        default = [];
+        description = "All buffers of these bufer types will be closed before the session is saved";
+      };
+
+      autosave_only_in_session = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Always autosaves session. If true, only autosaves after a session is active";
+      };
+    };
+  };
+}