Add define OS

install.py

@@ -24,6 +24,7 @@ class Installer:
         )
         self.base_dir = Path.getcwd()
         self.home = Path("~").expanduser()
+        self.operating_system = define_os()
         self.force = force
         self.update = update
 
@@ -106,7 +107,7 @@ class Installer:
         if executable:
             p_dest.chmod(0o755)
 
-    def do_run(self, command: str, condition: str = 'true') -> None:
+    def do_run(self, command: str, condition: str = "true") -> None:
         """Run a command."""
 
         if not self.evaluate_condition(condition):
@@ -212,6 +213,23 @@ class Installer:
         ui.info()
 
 
+def define_os() -> str:
+    """Define what OS we are using. Defaults to Arch Linux."""
+
+    os_release = Path("/etc/os-release")
+
+    oses = ("debian", "arch")
+
+    for operating_system in oses:
+        if operating_system in os_release.read_text().lower():
+            ui.info_3("Found", operating_system)
+
+            return operating_system
+
+    ui.warning("Operating system wasn't found")
+
+    return input("What is it ? ")
+
 
 def main() -> None:
     """Parse args and instantiate the Installer."""