diff --git a/pkgs/development/libraries/isl/0.17.1.nix b/pkgs/development/libraries/isl/0.17.1.nix
deleted file mode 100644
index 2e0110df786e..000000000000
--- a/pkgs/development/libraries/isl/0.17.1.nix
+++ /dev/null
@@ -1,8 +0,0 @@
-import ./generic.nix rec {
-  version = "0.17.1";
-  urls = [
-    "mirror://sourceforge/libisl/isl-${version}.tar.xz"
-    "https://libisl.sourceforge.io/isl-${version}.tar.xz"
-  ];
-  sha256 = "be152e5c816b477594f4c6194b5666d8129f3a27702756ae9ff60346a8731647";
-}
diff --git a/pkgs/top-level/aliases.nix b/pkgs/top-level/aliases.nix
index 9c42ec793cff..d4f093336185 100644
--- a/pkgs/top-level/aliases.nix
+++ b/pkgs/top-level/aliases.nix
@@ -547,6 +547,7 @@ mapAliases {
   irrlichtmt = throw "irrlichtmt has been removed because it was moved into the Minetest repo"; # Added 2024-08-12
   isl_0_11 = throw "isl_0_11 has been removed from Nixpkgs, as it is unmaintained and obsolete"; # Added 2024-09-13
   isl_0_14 = throw "isl_0_14 has been removed from Nixpkgs, as it is unmaintained and obsolete"; # Added 2024-09-13
+  isl_0_17 = throw "isl_0_17 has been removed from Nixpkgs, as it is unmaintained and obsolete"; # Added 2024-11-20
   iso-flags-png-320x420 = lib.warn "iso-flags-png-320x420 has been renamed to iso-flags-png-320x240" iso-flags-png-320x240; # Added 2024-07-17
   itktcl = tclPackages.itktcl; # Added 2024-10-02
 
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f6bc8a1e79e9..5fd3f04be066 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3931,7 +3931,6 @@ with pkgs;
   angryipscanner = ipscan;
 
   isl = isl_0_20;
-  isl_0_17 = callPackage ../development/libraries/isl/0.17.1.nix { };
   isl_0_20 = callPackage ../development/libraries/isl/0.20.0.nix { };
   isl_0_24 = callPackage ../development/libraries/isl/0.24.0.nix { };