diff --git a/pkgs/by-name/hy/hyperscan/package.nix b/pkgs/by-name/hy/hyperscan/package.nix
index b9ba8e7b8dda..bce1ead253fd 100644
--- a/pkgs/by-name/hy/hyperscan/package.nix
+++ b/pkgs/by-name/hy/hyperscan/package.nix
@@ -56,8 +56,8 @@ stdenv.mkDerivation (finalAttrs: {
   postPatch = ''
     sed -i '/examples/d' CMakeLists.txt
     substituteInPlace libhs.pc.in \
-      --replace "libdir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_LIBDIR@" "libdir=@CMAKE_INSTALL_LIBDIR@" \
-      --replace "includedir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_INCLUDEDIR@" "includedir=@CMAKE_INSTALL_INCLUDEDIR@"
+      --replace-fail "libdir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_LIBDIR@" "libdir=@CMAKE_INSTALL_LIBDIR@" \
+      --replace-fail "includedir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_INCLUDEDIR@" "includedir=@CMAKE_INSTALL_INCLUDEDIR@"
   '';
 
   doCheck = true;
diff --git a/pkgs/by-name/rs/rspamd/package.nix b/pkgs/by-name/rs/rspamd/package.nix
index 853b9cae4c77..1288743c3c1f 100644
--- a/pkgs/by-name/rs/rspamd/package.nix
+++ b/pkgs/by-name/rs/rspamd/package.nix
@@ -14,7 +14,7 @@
   sqlite,
   ragel,
   icu,
-  hyperscan,
+  vectorscan,
   jemalloc,
   blas,
   lapack,
@@ -24,13 +24,10 @@
   zstd,
   libarchive,
   withBlas ? true,
-  withHyperscan ? stdenv.hostPlatform.isx86_64,
   withLuaJIT ? stdenv.hostPlatform.isx86_64,
   nixosTests,
 }:
 
-assert withHyperscan -> stdenv.hostPlatform.isx86_64;
-
 stdenv.mkDerivation rec {
   pname = "rspamd";
   version = "3.11.0";
@@ -48,7 +45,9 @@ stdenv.mkDerivation rec {
     cmake
     pkg-config
     perl
+    ragel
   ];
+
   buildInputs =
     [
       doctest
@@ -64,8 +63,8 @@ stdenv.mkDerivation rec {
       xxHash
       zstd
       libarchive
+      vectorscan
     ]
-    ++ lib.optional withHyperscan hyperscan
     ++ lib.optionals withBlas [
       blas
       lapack
@@ -73,23 +72,21 @@ stdenv.mkDerivation rec {
     ++ lib.optional withLuaJIT luajit
     ++ lib.optional (!withLuaJIT) lua;
 
-  cmakeFlags =
-    [
-      # pcre2 jit seems to cause crashes: https://github.com/NixOS/nixpkgs/pull/181908
-      "-DENABLE_PCRE2=OFF"
-      "-DDEBIAN_BUILD=ON"
-      "-DRUNDIR=/run/rspamd"
-      "-DDBDIR=/var/lib/rspamd"
-      "-DLOGDIR=/var/log/rspamd"
-      "-DLOCAL_CONFDIR=/etc/rspamd"
-      "-DENABLE_JEMALLOC=ON"
-      "-DSYSTEM_DOCTEST=ON"
-      "-DSYSTEM_FMT=ON"
-      "-DSYSTEM_XXHASH=ON"
-      "-DSYSTEM_ZSTD=ON"
-    ]
-    ++ lib.optional withHyperscan "-DENABLE_HYPERSCAN=ON"
-    ++ lib.optional (!withLuaJIT) "-DENABLE_LUAJIT=OFF";
+  cmakeFlags = [
+    # pcre2 jit seems to cause crashes: https://github.com/NixOS/nixpkgs/pull/181908
+    "-DENABLE_PCRE2=OFF"
+    "-DDEBIAN_BUILD=ON"
+    "-DRUNDIR=/run/rspamd"
+    "-DDBDIR=/var/lib/rspamd"
+    "-DLOGDIR=/var/log/rspamd"
+    "-DLOCAL_CONFDIR=/etc/rspamd"
+    "-DENABLE_JEMALLOC=ON"
+    "-DSYSTEM_DOCTEST=ON"
+    "-DSYSTEM_FMT=ON"
+    "-DSYSTEM_XXHASH=ON"
+    "-DSYSTEM_ZSTD=ON"
+    "-DENABLE_HYPERSCAN=ON"
+  ] ++ lib.optional (!withLuaJIT) "-DENABLE_LUAJIT=OFF";
 
   passthru.tests.rspamd = nixosTests.rspamd;
 
diff --git a/pkgs/by-name/ve/vectorscan/package.nix b/pkgs/by-name/ve/vectorscan/package.nix
index 7ac93806d006..206fb21b02eb 100644
--- a/pkgs/by-name/ve/vectorscan/package.nix
+++ b/pkgs/by-name/ve/vectorscan/package.nix
@@ -1,15 +1,16 @@
-{ lib
-, stdenv
-, fetchFromGitHub
-, cmake
-, pkg-config
-, ragel
-, util-linux
-, python3
-, boost
-, sqlite
-, pcre
-, enableShared ? !stdenv.hostPlatform.isStatic
+{
+  lib,
+  stdenv,
+  fetchFromGitHub,
+  cmake,
+  pkg-config,
+  ragel,
+  util-linux,
+  python3,
+  boost,
+  sqlite,
+  pcre,
+  enableShared ? !stdenv.hostPlatform.isStatic,
 }:
 
 stdenv.mkDerivation rec {
@@ -24,6 +25,10 @@ stdenv.mkDerivation rec {
   };
 
   postPatch = ''
+    sed -i '/examples/d' CMakeLists.txt
+    substituteInPlace libhs.pc.in \
+      --replace-fail "libdir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_LIBDIR@" "libdir=@CMAKE_INSTALL_LIBDIR@" \
+      --replace-fail "includedir=@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_INCLUDEDIR@" "includedir=@CMAKE_INSTALL_INCLUDEDIR@"
     substituteInPlace cmake/build_wrapper.sh \
       --replace-fail 'nm' '${stdenv.cc.targetPrefix}nm' \
       --replace-fail 'objcopy' '${stdenv.cc.targetPrefix}objcopy'
@@ -51,18 +56,35 @@ stdenv.mkDerivation rec {
   #
   # For generic builds (e.g. x86_64) this can mean using an implementation not optimized for the
   # potentially available more modern hardware extensions (e.g. x86_64 with AVX512).
-  cmakeFlags = [ (if enableShared then "-DBUILD_SHARED_LIBS=ON" else "BUILD_STATIC_LIBS=ON") ]
-    ++
-    (if lib.elem stdenv.hostPlatform.system [ "x86_64-linux" "i686-linux" ] then
-      [ "-DBUILD_AVX2=ON" "-DBUILD_AVX512=ON" "-DBUILD_AVX512VBMI=ON" "-DFAT_RUNTIME=ON" ]
-    else
-      (if (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) then
-        [ "-DBUILD_SVE=ON" "-DBUILD_SVE2=ON" "-DBUILD_SVE2_BITPERM=ON" "-DFAT_RUNTIME=ON" ]
+  cmakeFlags =
+    [ (if enableShared then "-DBUILD_SHARED_LIBS=ON" else "BUILD_STATIC_LIBS=ON") ]
+    ++ (
+      if
+        lib.elem stdenv.hostPlatform.system [
+          "x86_64-linux"
+          "i686-linux"
+        ]
+      then
+        [
+          "-DBUILD_AVX2=ON"
+          "-DBUILD_AVX512=ON"
+          "-DBUILD_AVX512VBMI=ON"
+          "-DFAT_RUNTIME=ON"
+        ]
       else
-        [ "-DFAT_RUNTIME=OFF" ]
-          ++ lib.optional stdenv.hostPlatform.avx2Support "-DBUILD_AVX2=ON"
-          ++ lib.optional stdenv.hostPlatform.avx512Support "-DBUILD_AVX512=ON"
-      )
+        (
+          if (stdenv.hostPlatform.isLinux && stdenv.hostPlatform.isAarch64) then
+            [
+              "-DBUILD_SVE=ON"
+              "-DBUILD_SVE2=ON"
+              "-DBUILD_SVE2_BITPERM=ON"
+              "-DFAT_RUNTIME=ON"
+            ]
+          else
+            [ "-DFAT_RUNTIME=OFF" ]
+            ++ lib.optional stdenv.hostPlatform.avx2Support "-DBUILD_AVX2=ON"
+            ++ lib.optional stdenv.hostPlatform.avx512Support "-DBUILD_AVX512=ON"
+        )
     );
 
   doCheck = true;
@@ -91,7 +113,14 @@ stdenv.mkDerivation rec {
     homepage = "https://www.vectorcamp.gr/vectorscan/";
     changelog = "https://github.com/VectorCamp/vectorscan/blob/${src.rev}/CHANGELOG-vectorscan.md";
     platforms = platforms.unix;
-    license = with licenses; [ bsd3 /* and */ bsd2 /* and */ licenses.boost ];
-    maintainers = with maintainers; [ tnias vlaci ];
+    license = with licenses; [
+      bsd3 # and
+      bsd2 # and
+      licenses.boost
+    ];
+    maintainers = with maintainers; [
+      tnias
+      vlaci
+    ];
   };
 }