diff --git a/pkgs/development/compilers/ecl/16.1.2.nix b/pkgs/development/compilers/ecl/16.1.2.nix
deleted file mode 100644
index f1b4337f9e07..000000000000
--- a/pkgs/development/compilers/ecl/16.1.2.nix
+++ /dev/null
@@ -1,107 +0,0 @@
-{
-  lib,
-  stdenv,
-  fetchurl,
-  fetchpatch,
-  libtool,
-  autoconf,
-  automake,
-  gmp,
-  mpfr,
-  libffi,
-  makeWrapper,
-  noUnicode ? false,
-  gcc,
-  threadSupport ? false,
-  useBoehmgc ? true,
-  boehmgc,
-}:
-
-stdenv.mkDerivation rec {
-  pname = "ecl";
-  version = "16.1.2";
-
-  src = fetchurl {
-    url = "https://common-lisp.net/project/ecl/static/files/release/ecl-${version}.tgz";
-    sha256 = "sha256-LUgrGgpPvV2IFDRRcDInnYCMtkBeIt2R721zNTRGS5k=";
-  };
-
-  nativeBuildInputs = [
-    autoconf
-    automake
-    makeWrapper
-    libtool
-  ];
-  propagatedBuildInputs = [
-    libffi
-    gmp
-    mpfr
-    gcc
-  ]
-  ++ lib.optionals useBoehmgc [
-    # replaces ecl's own gc which other packages can depend on, thus propagated
-    boehmgc
-  ];
-
-  configureFlags = [
-    (if threadSupport then "--enable-threads" else "--disable-threads")
-    "--with-gmp-incdir=${lib.getDev gmp}/include"
-    "--with-gmp-libdir=${lib.getLib gmp}/lib"
-    # -incdir, -libdir doesn't seem to be supported for libffi
-    "--with-libffi-prefix=${lib.getDev libffi}"
-  ]
-  ++ lib.optional (!noUnicode) "--enable-unicode";
-
-  patches = [
-    (fetchpatch {
-      # Avoid infinite loop, see https://gitlab.com/embeddable-common-lisp/ecl/issues/43 (fixed upstream)
-      name = "avoid-infinite-loop.patch";
-      url = "https://gitlab.com/embeddable-common-lisp/ecl/commit/caba1989f40ef917e7486f41b9cd5c7e3c5c2d79.patch";
-      sha256 = "07vw91psbc9gdn8grql46ra8lq3bgkzg5v480chnbryna4sv6lbb";
-    })
-    (fetchpatch {
-      # Fix getcwd with long pathnames
-      # Rebased version of
-      # https://gitlab.com/embeddable-common-lisp/ecl/commit/ac5f011f57a85a38627af154bc3ee7580e7fecd4.patch
-      name = "getcwd.patch";
-      url = "https://raw.githubusercontent.com/sagemath/sage/07d6c37d18811e2b377a9689790a7c5e24da16ba/build/pkgs/ecl/patches/16.1.2-getcwd.patch";
-      sha256 = "1fbi8gn7rv8nqff5mpaijsrch3k3z7qc5cn4h1vl8qrr8xwqlqhb";
-    })
-    ./ecl-1.16.2-libffi-3.3-abi.patch
-  ];
-
-  hardeningDisable = [ "format" ];
-
-  postInstall = ''
-    sed -e 's/@[-a-zA-Z_]*@//g' -i $out/bin/ecl-config
-    wrapProgram "$out/bin/ecl" \
-      --prefix PATH ':' "${
-        lib.makeBinPath [
-          gcc # for the C compiler
-          gcc.bintools.bintools # for ar
-        ]
-      }" \
-  ''
-  # ecl 16.1.2 is too old to have -libdir for libffi and boehmgc, so we need to
-  # use NIX_LDFLAGS_BEFORE to make gcc find these particular libraries.
-  # Since it is missing even the prefix flag for boehmgc we also need to inject
-  # the correct -I flag via NIX_CFLAGS_COMPILE. Since we have access to it, we
-  # create the variables with suffixSalt (which seems to be necessary for
-  # NIX_CFLAGS_COMPILE even).
-  + lib.optionalString useBoehmgc ''
-    --prefix NIX_CFLAGS_COMPILE_${gcc.suffixSalt} ' ' "-I${lib.getDev boehmgc}/include" \
-    --prefix NIX_LDFLAGS_BEFORE_${gcc.bintools.suffixSalt} ' ' "-L${lib.getLib boehmgc}/lib" \
-  ''
-  + ''
-    --prefix NIX_LDFLAGS_BEFORE_${gcc.bintools.suffixSalt} ' ' "-L${lib.getLib libffi}/lib"
-  '';
-
-  meta = {
-    description = "Lisp implementation aiming to be small, fast and easy to embed";
-    license = lib.licenses.mit;
-    teams = [ lib.teams.lisp ];
-    platforms = lib.platforms.unix;
-    # never built on aarch64-darwin since first introduction in nixpkgs
-    broken = stdenv.hostPlatform.isDarwin && stdenv.hostPlatform.isAarch64;
-  };
-}
diff --git a/pkgs/development/compilers/ecl/ecl-1.16.2-libffi-3.3-abi.patch b/pkgs/development/compilers/ecl/ecl-1.16.2-libffi-3.3-abi.patch
deleted file mode 100644
index 28dd7d0805b3..000000000000
--- a/pkgs/development/compilers/ecl/ecl-1.16.2-libffi-3.3-abi.patch
+++ /dev/null
@@ -1,15 +0,0 @@
-diff --git a/src/c/ffi.d b/src/c/ffi.d
-index 8861303e..8a959c23 100644
---- a/src/c/ffi.d
-+++ b/src/c/ffi.d
-@@ -145,8 +145,8 @@ static struct {
- #elif defined(X86_WIN64)
-         {@':win64', FFI_WIN64},
- #elif defined(X86_ANY) || defined(X86) || defined(X86_64)
--        {@':cdecl', FFI_SYSV},
--        {@':sysv', FFI_SYSV},
-+        {@':cdecl', FFI_UNIX64},
-+        {@':sysv', FFI_UNIX64},
-         {@':unix64', FFI_UNIX64},
- #endif
- };
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index ee3452607a6a..35921b441c59 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7048,10 +7048,6 @@ with pkgs;
     pkg = callPackage ../development/compilers/ecl { };
     faslExt = "fas";
   };
-  ecl_16_1_2 = wrapLisp {
-    pkg = callPackage ../development/compilers/ecl/16.1.2.nix { };
-    faslExt = "fas";
-  };
 
   # GNU Common Lisp
   gcl = wrapLisp {