db: make patches and autoreconfHook unconditional

pkgs/development/libraries/db/db-4.8.nix

@@ -3,8 +3,11 @@
 import ./generic.nix (args // {
   version = "4.8.30";
   sha256 = "0ampbl2f0hb1nix195kz1syrqqxpmvnvnfvphambj7xjrl3iljg0";
-  extraPatches = [ ./clang-4.8.patch ./CVE-2017-10140-4.8-cwd-db_config.patch ]
-    ++ lib.optionals stdenv.isDarwin [ ./darwin-mutexes-4.8.patch ];
+  extraPatches = [
+    ./clang-4.8.patch
+    ./CVE-2017-10140-4.8-cwd-db_config.patch
+    ./darwin-mutexes-4.8.patch
+  ];
 
   drvArgs.hardeningDisable = [ "format" ];
   drvArgs.doCheck = false;

pkgs/development/libraries/db/db-5.3.nix

@@ -3,6 +3,9 @@
 import ./generic.nix (args // {
   version = "5.3.28";
   sha256 = "0a1n5hbl7027fbz5lm0vp0zzfp1hmxnz14wx3zl9563h83br5ag0";
-  extraPatches = [ ./clang-5.3.patch ./CVE-2017-10140-cwd-db_config.patch ]
-    ++ lib.optionals stdenv.isDarwin [ ./darwin-mutexes.patch ];
+  extraPatches = [
+    ./clang-5.3.patch
+    ./CVE-2017-10140-cwd-db_config.patch
+    ./darwin-mutexes.patch
+  ];
 })

pkgs/development/libraries/db/db-6.0.nix

@@ -4,6 +4,9 @@ import ./generic.nix (args // {
   version = "6.0.20";
   sha256 = "00r2aaglq625y8r9xd5vw2y070plp88f1mb2gbq3kqsl7128lsl0";
   license = lib.licenses.agpl3;
-  extraPatches = [ ./clang-6.0.patch ./CVE-2017-10140-cwd-db_config.patch ]
-    ++ lib.optionals stdenv.isDarwin [ ./darwin-mutexes.patch ];
+  extraPatches = [
+    ./clang-6.0.patch
+    ./CVE-2017-10140-cwd-db_config.patch
+    ./darwin-mutexes.patch
+  ];
 })

pkgs/development/libraries/db/db-6.2.nix

@@ -4,6 +4,9 @@ import ./generic.nix (args // {
   version = "6.2.23";
   sha256 = "1isxx4jfmnh913jzhp8hhfngbk6dsg46f4kjpvvc56maj64jqqa7";
   license = lib.licenses.agpl3;
-  extraPatches = [ ./clang-6.0.patch ./CVE-2017-10140-cwd-db_config.patch ]
-    ++ lib.optionals stdenv.isDarwin [ ./darwin-mutexes.patch ];
+  extraPatches = [
+    ./clang-6.0.patch
+    ./CVE-2017-10140-cwd-db_config.patch
+    ./darwin-mutexes.patch
+  ];
 })

pkgs/development/libraries/db/generic.nix

@@ -10,9 +10,6 @@
 , drvArgs ? {}
 }:
 
-let
-  shouldReconfigure = stdenv.cc.isClang;
-in
 stdenv.mkDerivation (rec {
   pname = "db";
   inherit version;
@@ -24,16 +21,16 @@ stdenv.mkDerivation (rec {
 
   # The provided configure script features `main` returning implicit `int`, which causes
   # configure checks to work incorrectly with clang 16.
-  nativeBuildInputs = lib.optionals stdenv.cc.isClang [ autoreconfHook ];
+  nativeBuildInputs = [ autoreconfHook ];
 
   patches = extraPatches;
 
   outputs = [ "bin" "out" "dev" ];
 
   # Required when regenerated the configure script to make sure the vendored macros are found.
-  autoreconfFlags = lib.optionalString shouldReconfigure [ "-fi" "-Iaclocal" "-Iaclocal_java" ];
+  autoreconfFlags = [ "-fi" "-Iaclocal" "-Iaclocal_java" ];
 
-  preAutoreconf = lib.optionalString shouldReconfigure ''
+  preAutoreconf = ''
     pushd dist
     # Upstream’s `dist/s_config` cats everything into `aclocal.m4`, but that doesn’t work with
     # autoreconfHook, so cat `config.m4` to another file. Otherwise, it won’t be found by `aclocal`.
@@ -43,7 +40,7 @@ stdenv.mkDerivation (rec {
   # This isn’t pretty. The version information is kept separate from the configure script.
   # After the configure script is regenerated, the version information has to be replaced with the
   # contents of `dist/RELEASE`.
-  postAutoreconf = lib.optionalString shouldReconfigure ''
+  postAutoreconf = ''
     (
       declare -a vars=(
         "DB_VERSION_FAMILY"