diff --git a/cms/conf.py b/cms/conf.py
index 96e53ab836..83f4794952 100644
--- a/cms/conf.py
+++ b/cms/conf.py
@@ -162,37 +162,14 @@ def __init__(self):
         self.max_jobs_per_user = 10
         self.pdf_printing_allowed = False
 
-        # Installed or from source?
-        # We declare we are running from installed if the program was
-        # NOT invoked through some python flavor, and the file is in
-        # the prefix (or real_prefix to accommodate virtualenvs).
-        bin_path = os.path.join(os.getcwd(), sys.argv[0])
-        bin_name = os.path.basename(bin_path)
-        bin_is_python = bin_name in ["ipython", "python", "python3"]
-        bin_in_installed_path = bin_path.startswith(sys.prefix) or (
-            hasattr(sys, 'real_prefix')
-            and bin_path.startswith(sys.real_prefix))
-        self.installed = bin_in_installed_path and not bin_is_python
-
-        if self.installed:
-            self.log_dir = os.path.join("/", "var", "local", "log", "cms")
-            self.cache_dir = os.path.join("/", "var", "local", "cache", "cms")
-            self.data_dir = os.path.join("/", "var", "local", "lib", "cms")
-            self.run_dir = os.path.join("/", "var", "local", "run", "cms")
-            paths = [os.path.join("/", "usr", "local", "etc", "cms.conf"),
-                     os.path.join("/", "etc", "cms.conf")]
-        else:
-            self.log_dir = "log"
-            self.cache_dir = "cache"
-            self.data_dir = "lib"
-            self.run_dir = "run"
-            paths = [os.path.join(".", "config", "cms.conf")]
-            if '__file__' in globals():
-                paths += [os.path.abspath(os.path.join(
-                          os.path.dirname(__file__),
-                          '..', 'config', 'cms.conf'))]
-            paths += [os.path.join("/", "usr", "local", "etc", "cms.conf"),
-                      os.path.join("/", "etc", "cms.conf")]
+        self.log_dir = os.path.join("/", "var", "local", "log", "cms")
+        self.cache_dir = os.path.join("/", "var", "local", "cache", "cms")
+        self.data_dir = os.path.join("/", "var", "local", "lib", "cms")
+        self.run_dir = os.path.join("/", "var", "local", "run", "cms")
+        paths = [
+            os.path.join("/", "usr", "local", "etc", "cms.conf"),
+            os.path.join("/", "etc", "cms.conf"),
+        ]
 
         # Allow user to override config file path using environment
         # variable 'CMS_CONFIG'.
diff --git a/cms/service/ResourceService.py b/cms/service/ResourceService.py
index 47a981f47f..463658a839 100644
--- a/cms/service/ResourceService.py
+++ b/cms/service/ResourceService.py
@@ -247,11 +247,6 @@ def _restart_services(self):
                 logger.info("Restarting (%s, %s)...",
                             service.name, service.shard)
                 command = os.path.join(BIN_PATH, "cms%s" % service.name)
-                if not config.installed:
-                    command = os.path.join(
-                        ".",
-                        "scripts",
-                        "cms%s" % service.name)
                 args = [command, "%d" % service.shard]
                 if self.contest_id is not None:
                     args += ["-c", str(self.contest_id)]
diff --git a/cmscontrib/loaders/polygon.py b/cmscontrib/loaders/polygon.py
index 200dd38c8d..0a16d95faa 100644
--- a/cmscontrib/loaders/polygon.py
+++ b/cmscontrib/loaders/polygon.py
@@ -185,9 +185,6 @@ def get_task(self, get_statement=True):
                     os.path.dirname(checker_src), "checker")
                 testlib_path = "/usr/local/include/cms"
                 testlib_include = os.path.join(testlib_path, "testlib.h")
-                if not config.installed:
-                    testlib_path = os.path.join(os.path.dirname(__file__),
-                                                "polygon")
                 code = subprocess.call(["g++", "-x", "c++", "-O2", "-static",
                                         "-DCMS", "-I", testlib_path,
                                         "-include", testlib_include,
diff --git a/cmsranking/Config.py b/cmsranking/Config.py
index da0511aa33..b302c09453 100644
--- a/cmsranking/Config.py
+++ b/cmsranking/Config.py
@@ -57,32 +57,13 @@ def __init__(self):
         # Buffers
         self.buffer_size = 100  # Needs to be strictly positive.
 
-        # File system.
-        # TODO: move to cmscommon as it is used both here and in cms/conf.py
-        bin_path = os.path.join(os.getcwd(), sys.argv[0])
-        bin_name = os.path.basename(bin_path)
-        bin_is_python = bin_name in ["ipython", "python", "python3"]
-        bin_in_installed_path = bin_path.startswith(sys.prefix) or (
-            hasattr(sys, 'real_prefix')
-            and bin_path.startswith(sys.real_prefix))
-        self.installed = bin_in_installed_path and not bin_is_python
-
         self.web_dir = pkg_resources.resource_filename("cmsranking", "static")
-        if self.installed:
-            self.log_dir = os.path.join("/", "var", "local", "log",
-                                        "cms", "ranking")
-            self.lib_dir = os.path.join("/", "var", "local", "lib",
-                                        "cms", "ranking")
-            self.conf_paths = [os.path.join("/", "usr", "local", "etc",
-                                            "cms.ranking.conf"),
-                               os.path.join("/", "etc", "cms.ranking.conf")]
-        else:
-            self.log_dir = os.path.join("log", "ranking")
-            self.lib_dir = os.path.join("lib", "ranking")
-            self.conf_paths = [os.path.join(".", "config", "cms.ranking.conf"),
-                               os.path.join("/", "usr", "local", "etc",
-                                            "cms.ranking.conf"),
-                               os.path.join("/", "etc", "cms.ranking.conf")]
+        self.log_dir = os.path.join("/", "var", "local", "log", "cms", "ranking")
+        self.lib_dir = os.path.join("/", "var", "local", "lib", "cms", "ranking")
+        self.conf_paths = [
+            os.path.join("/", "usr", "local", "etc", "cms.ranking.conf"),
+            os.path.join("/", "etc", "cms.ranking.conf"),
+        ]
 
         # Allow users to override config file path using environment
         # variable 'CMS_RANKING_CONFIG'.