2 files changed, 84 insertions, 0 deletions
diff --git a/modules/lib/file.nix b/modules/lib/file.nix
new file mode 100644
index 0000000..4e7a595
--- /dev/null
+++ b/modules/lib/file.nix
@@ -0,0 +1,43 @@
+{ lib, pkgs, ... }:
+with builtins // lib;
+
+basePath:
+rec {
+  option = mkOption {
+    type = fileType;
+    default = {};
+    description = "Files relative to ${basePath}";
+  };
+
+  type = types.attrsOf (types.submodule ({ name, config, ... }: {
+    options = {
+      enable = mkEnableOption name // { default = text != ""; };
+      target = mkOption {
+        type = types.str;
+        default = name;
+        apply = p: if basePath == "" || isPrefix basePath p then p else "${basePath}/${p}";
+      };
+      executable = mkOption {
+        type = with types; nullOr bool;
+        default = null;
+      };
+      source = mkOption {
+        type = types.path;
+      };
+      text = mkOption {
+        type = with types; nullOr lines;
+        default = null;
+      };
+    };
+
+    config = mkMerge [
+      (mkIf (config.text != null) {
+        source = mkDefault pkgs.writeTextFile {
+          inherit name;
+          inherit (config) text;
+          executable = config.executable == true;
+        };
+      })
+    ];
+  }))
+}
diff --git a/modules/lib/manifest.nix b/modules/lib/manifest.nix
new file mode 100644
index 0000000..1acb567
--- /dev/null
+++ b/modules/lib/manifest.nix
@@ -0,0 +1,41 @@
+{ pkgs, lib, ... }:
+with builtins // lib;
+
+basePath:
+rec {
+  option = mkOption {
+    type = manifestType;
+    default = {};
+    description = "Manifest relative to ${basePath}";
+  };
+  type = types.attrsOf (types.submodule ({ name, config, ... }: {
+    options = {
+      enable = mkEnableOption name // { default = true; };
+      targets = mkOption {
+        type = with types; listOf str;
+        default = [ name ];
+        apply = map (p: if basePath = "" || isPrefix basePath p then p else "${basePath}/${p}");
+      };
+      mergeTool = mkOption {
+        type = with types; functionTo (functionTo str);
+        description = ''
+        Sometimes we don't just want to overwrite the existing kobo file; instead we need to merge them.
+        This is the executable which does this.
+        The first argument is the local file and the second is the kobo file.
+        Note that the local file path and the kobo file path only disagree in their top-level directory and otherwise are the same path.
+        '';
+        example = ''
+        localFile: koboFile: "cp ''${localFile} ''${koboFile}"
+        '';
+      };
+      # remoteOnly = mkOption {
+      #   type = types.bool;
+      #   default = false;
+      #   description = ''
+      #   In general, the manifest only considers local files that match the target/pattern.
+      #   Setting this to true means that the kobo files will be scanned and the provided mergeTool will be run with the first argument set to null.
+      #   '';
+      # };
+    };
+  }))
+}