diff --git a/pkgs/desktops/cinnamon/nemo-extensions/nemo-emblems/default.nix b/pkgs/desktops/cinnamon/nemo-extensions/nemo-emblems/default.nix
index 9ae71d97976..d298827487e 100644
--- a/pkgs/desktops/cinnamon/nemo-extensions/nemo-emblems/default.nix
+++ b/pkgs/desktops/cinnamon/nemo-extensions/nemo-emblems/default.nix
@@ -3,19 +3,15 @@
 , fetchFromGitHub
 }:
 
+let
+  srcs = import ../srcs.nix { inherit fetchFromGitHub; };
+in
 python3.pkgs.buildPythonApplication rec {
   pname = "nemo-emblems";
-  version = "5.8.0";
+  inherit (srcs) version src;
 
   format = "setuptools";
 
-  src = fetchFromGitHub {
-    owner = "linuxmint";
-    repo = "nemo-extensions";
-    rev = version;
-    sha256 = "sha256-tyRYPWJa93w05a0PcYvz1GA8/xX2kHLdIzz4tCcppiY=";
-  };
-
   sourceRoot = "${src.name}/nemo-emblems";
 
   postPatch = ''
diff --git a/pkgs/desktops/cinnamon/nemo-extensions/nemo-fileroller/default.nix b/pkgs/desktops/cinnamon/nemo-extensions/nemo-fileroller/default.nix
index 1b5717b2fd7..71c61db992a 100644
--- a/pkgs/desktops/cinnamon/nemo-extensions/nemo-fileroller/default.nix
+++ b/pkgs/desktops/cinnamon/nemo-extensions/nemo-fileroller/default.nix
@@ -10,16 +10,12 @@
 , gnome
 }:
 
+let
+  srcs = import ../srcs.nix { inherit fetchFromGitHub; };
+in
 stdenv.mkDerivation rec {
   pname = "nemo-fileroller";
-  version = "5.8.0";
-
-  src = fetchFromGitHub {
-    owner = "linuxmint";
-    repo = "nemo-extensions";
-    rev = version;
-    sha256 = "sha256-tyRYPWJa93w05a0PcYvz1GA8/xX2kHLdIzz4tCcppiY=";
-  };
+  inherit (srcs) version src;
 
   sourceRoot = "${src.name}/nemo-fileroller";
 
diff --git a/pkgs/desktops/cinnamon/nemo-extensions/nemo-python/default.nix b/pkgs/desktops/cinnamon/nemo-extensions/nemo-python/default.nix
index a34b0a9eb5b..8b6f5f07a1c 100644
--- a/pkgs/desktops/cinnamon/nemo-extensions/nemo-python/default.nix
+++ b/pkgs/desktops/cinnamon/nemo-extensions/nemo-python/default.nix
@@ -11,16 +11,12 @@
 , substituteAll
 }:
 
+let
+  srcs = import ../srcs.nix { inherit fetchFromGitHub; };
+in
 stdenv.mkDerivation rec {
   pname = "nemo-python";
-  version = "5.8.0";
-
-  src = fetchFromGitHub {
-    owner = "linuxmint";
-    repo = "nemo-extensions";
-    rev = version;
-    sha256 = "sha256-tyRYPWJa93w05a0PcYvz1GA8/xX2kHLdIzz4tCcppiY=";
-  };
+  inherit (srcs) version src;
 
   sourceRoot = "${src.name}/nemo-python";
 
diff --git a/pkgs/desktops/cinnamon/nemo-extensions/srcs.nix b/pkgs/desktops/cinnamon/nemo-extensions/srcs.nix
new file mode 100644
index 00000000000..491373f5ea5
--- /dev/null
+++ b/pkgs/desktops/cinnamon/nemo-extensions/srcs.nix
@@ -0,0 +1,15 @@
+{ fetchFromGitHub }:
+
+rec {
+  # When you bump this, you should make sure all nemo-extensions
+  # are actually using this file since we try to deal with tags
+  # like nemo-fileroller-5.6.1 according to upstream's wishes.
+  version = "5.8.0";
+
+  src = fetchFromGitHub {
+    owner = "linuxmint";
+    repo = "nemo-extensions";
+    rev = version;
+    sha256 = "sha256-tyRYPWJa93w05a0PcYvz1GA8/xX2kHLdIzz4tCcppiY=";
+  };
+}