diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..5c58a2e
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,17 @@
+name: build 
+# This workflow is triggered on pushes to the repository.
+on: [push]
+
+jobs:
+  build: 
+    name: build-linux
+    runs-on: ubuntu-latest
+    container: tipibuild/tipi-ubuntu
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+      - name: tipi builds project 
+        run: |
+          export HOME=/root
+          mkdir -p ~/.tipi
+          tipi . -t linux --dont-upgrade --verbose --test all 
diff --git a/.gitignore b/.gitignore
index c59dc9c..fa87f69 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@ libcity
 unit_tests
 doc
 include
+/build
diff --git a/.tipi/deps b/.tipi/deps
new file mode 100644
index 0000000..9907c1b
--- /dev/null
+++ b/.tipi/deps
@@ -0,0 +1,6 @@
+{
+  "unittest-cpp/unittest-cpp" : { "@" : "v2.0.0", 
+    "x:linux": ["UnitTest++/Win32/*"],
+    "x:macos": ["UnitTest++/Win32/*"], 
+    "x:windows": ["UnitTest++/Posix/*"] }
+}
diff --git a/README b/README
index 1185200..6ac381d 100644
--- a/README
+++ b/README
@@ -11,6 +11,22 @@ BUILD
   This will build both the staticaly and dynamicaly linked versions
   and also extract headers from source tree into include/.
 
+BUILD with tipi.build
+  To build and hack on libcity, you can build, install dependencies and run all tests with any of : 
+   -  `tipi . -t macos`
+   -  `tipi . -t linux`
+   -  `tipi . -t windows`
+
+INSTALL with tipi.build
+  `libcity` can be easily used with the [tipi.build](https://tipi.build) dependency manager, by adding the following to a `.tipi/deps`:
+
+  ```json
+  {
+    "CallForSanity/libcity": { }
+  }
+  ```
+
+
 DOCUMENTATION
   Documentation can be extracted from the source codes with doxygen.
 
diff --git a/src/geometry/point.cpp b/src/geometry/point.cpp
index d86a8f0..e9189ea 100644
--- a/src/geometry/point.cpp
+++ b/src/geometry/point.cpp
@@ -46,19 +46,19 @@ void Point::set(double const& xCoord, double const& yCoord, double const& zCoord
   zPosition = zCoord;
 }
 
-bool Point::operator==(Point const& second)
+bool Point::operator==(Point const& second) const
 {
   return std::abs(xPosition - second.x()) < libcity::COORDINATES_EPSILON &&
          std::abs(yPosition - second.y()) < libcity::COORDINATES_EPSILON &&
          std::abs(zPosition - second.z()) < libcity::COORDINATES_EPSILON;
 }
 
-bool Point::operator!=(Point const& second)
+bool Point::operator!=(Point const& second) const
 {
   return !(*this == second);
 }
 
-bool Point::operator<(Point const& second)
+bool Point::operator<(Point const& second) const 
 {
   if (x() < second.x())
   {
@@ -72,7 +72,7 @@ bool Point::operator<(Point const& second)
   return false;
 }
 
-bool Point::operator>(Point const& second)
+bool Point::operator>(Point const& second) const
 {
   if (x() > second.x())
   {
@@ -110,4 +110,4 @@ std::string Point::toString() const
   std::stringstream convertor;
   convertor << "Point(" << xPosition << ", " << yPosition << ", " << zPosition << ")";
   return convertor.str();
-}
\ No newline at end of file
+}
diff --git a/src/geometry/point.h b/src/geometry/point.h
index 6d9ba4d..b6dd027 100644
--- a/src/geometry/point.h
+++ b/src/geometry/point.h
@@ -43,10 +43,10 @@ class Point
     void setY(double const& coordinate);
     void setZ(double const& coordinate);
 
-    bool operator==(Point const& second);
-    bool operator!=(Point const& second);
-    bool operator<(Point const& second);
-    bool operator>(Point const& second);
+    bool operator==(Point const& second) const;
+    bool operator!=(Point const& second) const;
+    bool operator<(Point const& second) const;
+    bool operator>(Point const& second) const;
 
     Point& operator+=(Vector const& difference);
     Point  operator+(Vector const& difference) const;
@@ -84,4 +84,4 @@ inline void Point::setZ(double const& coordinate)
   zPosition = coordinate;
 }
 
-#endif
\ No newline at end of file
+#endif