broot: fix config file location (nix-community#3273)

At commit [5666e6b9](Canop/broot@5666e6b),
broot refactored the content of the file `/resources/default-conf.hjson`
into multiple files under the directory `/resources/default-conf`, using
[`imports`](https://github.com/Canop/broot/blob/5666e6b9fb827c07c6c21fbe0fc60f538e1aaf60/resources/default-conf/conf.hjson#L152-L165)
to refer to other configurations.

This refactoring is effective since version 1.14.0 of broot.

After this refactoring, in `xdg.configFile.broot` (which defaults to
`~/.config/broot`):
- we need to copy all potentially referenced files (all files under
  `resources/default-conf`),
- except we need to leave out `conf.hjson` which conflicts with the
  `conf.toml` generated by home-manager (because broot [accepts both conf.toml and conf.hjson](https://dystroy.org/broot/conf_file/))

To implement this, we use `symlinkJoin` to create the content of
`xdg.configFile.broot` by merging multiple sources.

modules/programs/broot.nix

@@ -206,16 +206,33 @@ in {
   config = mkIf cfg.enable {
     home.packages = [ cfg.package ];
 
-    xdg.configFile."broot/conf.toml".source =
-      tomlFormat.generate "broot-config" cfg.settings;
-
-    # Dummy file to prevent broot from trying to reinstall itself
-    xdg.configFile."broot/launcher/installed-v1".text = "";
+    xdg.configFile."broot" = {
+      recursive = true;
+      source = pkgs.symlinkJoin {
+        name = "xdg.configFile.broot";
+        paths = [
+          (pkgs.writeTextDir "conf.toml" (builtins.readFile
+            (tomlFormat.generate "broot-config" cfg.settings)))
+
+          # Copy all files under /resources/default-conf
+          "${cfg.package.src}/resources/default-conf"
+
+          # Dummy file to prevent broot from trying to reinstall itself
+          (pkgs.writeTextDir "launcher/installed-v1" "")
+        ];
+
+        # Remove conf.hjson, whose content has been merged into programs.broot.settings
+        postBuild = ''
+          rm $out/conf.hjson
+        '';
+      };
+    };
 
     programs.broot.settings = builtins.fromJSON (builtins.readFile
       (pkgs.runCommand "default-conf.json" {
         nativeBuildInputs = [ pkgs.hjson ];
-      } "hjson -c ${cfg.package.src}/resources/default-conf.hjson > $out"));
+      }
+        "hjson -c ${cfg.package.src}/resources/default-conf/conf.hjson > $out"));
 
     programs.bash.initExtra = mkIf cfg.enableBashIntegration (shellInit "bash");
 

tests/modules/programs/broot/broot.nix

@@ -13,39 +13,10 @@ with lib;
       assertFileExists home-files/.config/broot/conf.toml
       assertFileContent home-files/.config/broot/conf.toml ${
         pkgs.writeText "broot.expected" ''
+          imports = ["verbs.hjson", {file = "dark-blue-skin.hjson", luma = ["dark", "unknown"]}, {file = "white-skin.hjson", luma = "light"}]
           modal = true
           show_selection_mark = true
-
-          [[verbs]]
-          execution = "$EDITOR +{line} {file}"
-          invocation = "edit"
-          leave_broot = false
-          shortcut = "e"
-
-          [[verbs]]
-          execution = "$EDITOR {directory}/{subpath}"
-          invocation = "create {subpath}"
-          leave_broot = false
-
-          [[verbs]]
-          execution = "git difftool -y {file}"
-          invocation = "git_diff"
-          leave_broot = false
-          shortcut = "gd"
-
-          [[verbs]]
-          auto_exec = false
-          execution = "cp -r {file} {parent}/{file-stem}-{version}{file-dot-extension}"
-          invocation = "backup {version}"
-          key = "ctrl-b"
-          leave_broot = false
-
-          [[verbs]]
-          execution = "$SHELL"
-          invocation = "terminal"
-          key = "ctrl-t"
-          leave_broot = false
-          set_working_dir = true
+          verbs = []
 
           [skin]
         ''