iv: drop

iv was only used as a dependency for neuron. The last neuron version
that used iv was 7.7, so when updating neuron to 8.2.1 in
77aed40027 iv was made obsolete. It
continued building (with an incorrect URL due to an unchanged hash) up
until December 2024. Now the time has come for iv to be dropped.

pkgs/applications/science/biology/iv/default.nix

@@ -1,46 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  neuron-version,
-  libX11,
-  libXext,
-  patchelf,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "iv";
-  version = "19";
-
-  src = fetchurl {
-    url = "https://www.neuron.yale.edu/ftp/neuron/versions/v${neuron-version}/iv-${version}.tar.gz";
-    sha256 = "07a3g8zzay4h0bls7fh89dd0phn7s34c2g15pij6dsnwpmjg06yx";
-  };
-
-  nativeBuildInputs = [ patchelf ];
-  buildInputs = [ libXext ];
-  propagatedBuildInputs = [ libX11 ];
-
-  hardeningDisable = [ "format" ];
-
-  postInstall =
-    ''
-      for dir in $out/*; do # */
-        if [ -d $dir/lib ]; then
-          mv $dir/* $out # */
-          rmdir $dir
-          break
-        fi
-      done
-    ''
-    + lib.optionalString stdenv.hostPlatform.isLinux ''
-      patchelf --add-needed ${libX11}/lib/libX11.so $out/lib/libIVhines.so
-    '';
-
-  meta = with lib; {
-    description = "InterViews graphical library for Neuron";
-    license = licenses.bsd3;
-    homepage = "http://www.neuron.yale.edu/neuron";
-    platforms = platforms.all;
-  };
-}

pkgs/top-level/aliases.nix

@@ -848,6 +848,7 @@ mapAliases {
   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.warnOnInstantiate "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
+  iv = throw "iv has been removed as it was no longer required for neuron and broken"; # Added 2025-04-18
   ix = throw "ix has been removed from Nixpkgs, as the ix.io pastebin has been offline since Dec. 2023"; # Added 2025-04-11
 
   ### J ###

pkgs/top-level/all-packages.nix

@@ -17980,10 +17980,6 @@ with pkgs;
     inherit (llvmPackages) openmp;
   };
 
-  iv = callPackage ../applications/science/biology/iv {
-    neuron-version = neuron.version;
-  };
-
   kallisto = callPackage ../applications/science/biology/kallisto {
     autoconf = buildPackages.autoconf269;
   };