gmp5: drop

It is not maintained upstream and there is no remaining usages in
nixpkgs.

pkgs/development/libraries/gmp/5.1.3-CVE-2021-43618.patch

@@ -1,20 +0,0 @@
-Based on https://gmplib.org/repo/gmp-6.2/raw-rev/561a9c25298e,
-adapted for 5.x by ris
-
-diff -r e1fd9db13b47 -r 561a9c25298e mpz/inp_raw.c
---- a/mpz/inp_raw.c	Tue Dec 22 23:49:51 2020 +0100
-+++ b/mpz/inp_raw.c	Thu Oct 21 19:06:49 2021 +0200
-@@ -81,8 +81,11 @@
- 
-   abs_csize = ABS (csize);
- 
-+  if (UNLIKELY (abs_csize > ~(mp_bitcnt_t) 0 / 8))
-+    return 0; /* Bit size overflows */
-+
-   /* round up to a multiple of limbs */
--  abs_xsize = (abs_csize*8 + GMP_NUMB_BITS-1) / GMP_NUMB_BITS;
-+  abs_xsize = ((mp_bitcnt_t)abs_csize*8 + GMP_NUMB_BITS-1) / GMP_NUMB_BITS;
- 
-   if (abs_xsize != 0)
-     {
-

pkgs/development/libraries/gmp/5.1.x.nix

@@ -1,87 +0,0 @@
-{ lib, stdenv, fetchurl, m4
-, cxx ? true
-, withStatic ? stdenv.hostPlatform.isStatic
-}:
-
-let inherit (lib) optional; in
-
-let self = stdenv.mkDerivation rec {
-  pname = "gmp";
-  version = "5.1.3";
-
-  src = fetchurl { # we need to use bz2, others aren't in bootstrapping stdenv
-    urls = [ "mirror://gnu/gmp/gmp-${version}.tar.bz2" "ftp://ftp.gmplib.org/pub/gmp-${version}/gmp-${version}.tar.bz2" ];
-    sha256 = "0q5i39pxrasgn9qdxzpfbwhh11ph80p57x6hf48m74261d97j83m";
-  };
-
-  #outputs TODO: split $cxx due to libstdc++ dependency
-  # maybe let ghc use a version with *.so shared with rest of nixpkgs and *.a added
-  # - see #5855 for related discussion
-  outputs = [ "out" "dev" "info" ];
-  passthru.static = self.out;
-
-  nativeBuildInputs = [ m4 ];
-
-  patches = [
-    ./5.1.3-CVE-2021-43618.patch
-  ] ++ lib.optionals stdenv.hostPlatform.isDarwin [
-    ./need-size-t.patch
-  ];
-
-  configureFlags = [
-    "--with-pic"
-    (lib.enableFeature cxx "cxx")
-    # Build a "fat binary", with routines for several sub-architectures
-    # (x86), except on Solaris where some tests crash with "Memory fault".
-    # See <https://hydra.nixos.org/build/2760931>, for instance.
-    #
-    # no darwin because gmp uses ASM that clang doesn't like
-    (lib.enableFeature (!stdenv.hostPlatform.isSunOS && stdenv.hostPlatform.isx86) "fat")
-    # The config.guess in GMP tries to runtime-detect various
-    # ARM optimization flags via /proc/cpuinfo (and is also
-    # broken on multicore CPUs). Avoid this impurity.
-    "--build=${stdenv.buildPlatform.config}"
-  ] ++ optional (cxx && stdenv.hostPlatform.isDarwin) "CPPFLAGS=-fexceptions"
-    ++ optional (stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.is64bit) "ABI=64"
-    ;
-
-  doCheck = true;
-
-  dontDisableStatic = withStatic;
-
-  enableParallelBuilding = true;
-
-  meta = with lib; {
-    homepage = "https://gmplib.org/";
-    description = "GNU multiple precision arithmetic library";
-    license = licenses.gpl3Plus;
-
-    longDescription =
-      '' GMP is a free library for arbitrary precision arithmetic, operating
-         on signed integers, rational numbers, and floating point numbers.
-         There is no practical limit to the precision except the ones implied
-         by the available memory in the machine GMP runs on.  GMP has a rich
-         set of functions, and the functions have a regular interface.
-
-         The main target applications for GMP are cryptography applications
-         and research, Internet security applications, algebra systems,
-         computational algebra research, etc.
-
-         GMP is carefully designed to be as fast as possible, both for small
-         operands and for huge operands.  The speed is achieved by using
-         fullwords as the basic arithmetic type, by using fast algorithms,
-         with highly optimised assembly code for the most common inner loops
-         for a lot of CPUs, and by a general emphasis on speed.
-
-         GMP is faster than any other bignum library.  The advantage for GMP
-         increases with the operand sizes for many operations, since GMP uses
-         asymptotically faster algorithms.
-      '';
-
-    platforms = platforms.all;
-    badPlatforms = [ "x86_64-darwin" ];
-    # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
-  };
-};
-  in self

pkgs/top-level/aliases.nix

@@ -401,6 +401,7 @@ mapAliases {
   gfortran48 = throw "'gfortran48' has been removed from nixpkgs"; # Added 2024-09-10
   gfortran49 = throw "'gfortran49' has been removed from nixpkgs"; # Added 2024-09-11
   ghostwriter = libsForQt5.kdeGear.ghostwriter; # Added 2023-03-18
+  gmp5 = throw "'gmp5' has been removed as it is unmaintained. Consider using 'gmp' instead"; # Added 2024-10-28
   gmpc = throw "'gmpc' has been removed due to lack of maintenance upstream. Consider using 'plattenalbum' instead"; # Added 2024-09-14
   gmtk = throw "'gmtk' has been removed due to lack of maintenance upstream"; # Added 2024-09-14
   gmtp = throw "'gmtp' has been removed due to lack of maintenance upstream. Consider using 'gnome-music' instead"; # Added 2024-09-14

pkgs/top-level/all-packages.nix

@@ -19791,7 +19791,6 @@ with pkgs;
   gmm = callPackage ../development/libraries/gmm { };
 
   gmp4 = callPackage ../development/libraries/gmp/4.3.2.nix { }; # required by older GHC versions
-  gmp5 = callPackage ../development/libraries/gmp/5.1.x.nix { };
   gmp6 = callPackage ../development/libraries/gmp/6.x.nix { };
   gmp = gmp6;
   gmpxx = gmp.override { cxx = true; };