diff --git a/roentgen/constructor.py b/roentgen/constructor.py
index 01f69e0..d39e6f5 100644
--- a/roentgen/constructor.py
+++ b/roentgen/constructor.py
@@ -95,21 +95,21 @@ def glue(ways: list[OSMWay]) -> list[list[OSMNode]]:
     :param ways: ways to glue
     """
     result: list[list[OSMNode]] = []
-    to_process: set[list[OSMNode]] = set()
+    to_process: set[tuple[OSMNode]] = set()
 
     for way in ways:
         if way.is_cycle():
             result.append(way.nodes)
         else:
-            to_process.add(way.nodes)
+            to_process.add(tuple(way.nodes))
 
     while to_process:
-        nodes: list[OSMNode] = to_process.pop()
+        nodes: list[OSMNode] = list(to_process.pop())
         glued: Optional[list[OSMNode]] = None
-        other_nodes: Optional[list[OSMNode]] = None
+        other_nodes: Optional[tuple[OSMNode]] = None
 
         for other_nodes in to_process:
-            glued = try_to_glue(nodes, other_nodes)
+            glued = try_to_glue(nodes, list(other_nodes))
             if glued is not None:
                 break
 
@@ -118,7 +118,7 @@ def glue(ways: list[OSMWay]) -> list[list[OSMNode]]:
             if is_cycle(glued):
                 result.append(glued)
             else:
-                to_process.add(glued)
+                to_process.add(tuple(glued))
         else:
             result.append(nodes)
 
diff --git a/roentgen/figure.py b/roentgen/figure.py
index 2dd054d..6874444 100644
--- a/roentgen/figure.py
+++ b/roentgen/figure.py
@@ -34,9 +34,8 @@ class Figure(Tagged):
         inners: list[list[OSMNode]],
         outers: list[list[OSMNode]],
     ) -> None:
-        super().__init__()
+        super().__init__(tags)
 
-        self.tags: dict[str, str] = tags
         self.inners: list[list[OSMNode]] = list(map(make_clockwise, inners))
         self.outers: list[list[OSMNode]] = list(
             map(make_counter_clockwise, outers)
diff --git a/icons/LICENSE b/roentgen/icons/LICENSE
similarity index 100%
rename from icons/LICENSE
rename to roentgen/icons/LICENSE
diff --git a/icons/colors.svg b/roentgen/icons/colors.svg
similarity index 100%
rename from icons/colors.svg
rename to roentgen/icons/colors.svg
diff --git a/icons/config.json b/roentgen/icons/config.json
similarity index 100%
rename from icons/config.json
rename to roentgen/icons/config.json
diff --git a/icons/icons.svg b/roentgen/icons/icons.svg
similarity index 100%
rename from icons/icons.svg
rename to roentgen/icons/icons.svg
diff --git a/roentgen/osm_reader.py b/roentgen/osm_reader.py
index 0a4b715..b821c1c 100644
--- a/roentgen/osm_reader.py
+++ b/roentgen/osm_reader.py
@@ -145,6 +145,9 @@ class OSMNode(Tagged):
             coordinates=np.array((structure["lat"], structure["lon"])),
         )
 
+    def __hash__(self) -> int:
+        return self.id_
+
 
 @dataclass
 class OSMWay(Tagged):
diff --git a/scheme/default.yml b/roentgen/scheme/default.yml
similarity index 100%
rename from scheme/default.yml
rename to roentgen/scheme/default.yml
diff --git a/roentgen/workspace.py b/roentgen/workspace.py
index f4c597e..3a78086 100644
--- a/roentgen/workspace.py
+++ b/roentgen/workspace.py
@@ -6,6 +6,8 @@ from pathlib import Path
 __author__ = "Sergey Vartanov"
 __email__ = "me@enzet.ru"
 
+HERE: Path = Path(__file__).parent
+
 
 def check_and_create(directory: Path) -> Path:
     """Create directory if it doesn't exist and return it."""
@@ -21,12 +23,11 @@ class Workspace:
 
     # Project directories and files, that are the part of the repository.
 
-    SCHEME_PATH: Path = Path("scheme")
+    SCHEME_PATH: Path = HERE / Path("scheme")
     DEFAULT_SCHEME_PATH: Path = SCHEME_PATH / "default.yml"
-    ICONS_PATH: Path = Path("icons/icons.svg")
-    ICONS_CONFIG_PATH: Path = Path("icons/config.json")
+    ICONS_PATH: Path = HERE / Path("icons/icons.svg")
+    ICONS_CONFIG_PATH: Path = HERE / Path("icons/config.json")
     GITHUB_TEST_PATH: Path = Path(".github/workflows/test.yml")
-    DATA_PATH: Path = Path("data")
 
     # Generated directories and files.
 
diff --git a/setup.py b/setup.py
index fca09bb..54dd113 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@ from setuptools import setup
 
 setup(
     name="roentgen-map",
-    version="0.1.1",
+    version="0.1.2",
     packages=["roentgen"],
     url="https://github.com/enzet/Roentgen",
     project_urls={
@@ -26,6 +26,14 @@ setup(
     entry_points={
         "console_scripts": ["roentgen=roentgen.main:main"],
     },
+    package_data={
+        "roentgen": [
+            "icons/icons.svg",
+            "icons/config.json",
+            "icons/LICENSE",
+            "scheme/default.yml",
+        ],
+    },
     python_requires=">=3.9",
     install_requires=[
         "CairoSVG>=2.5.0",