diff --git a/pkgs/by-name/ad/adns/darwin.patch b/pkgs/by-name/ad/adns/darwin.patch
new file mode 100644
index 000000000000..9c44f89d462e
--- /dev/null
+++ b/pkgs/by-name/ad/adns/darwin.patch
@@ -0,0 +1,21 @@
+diff --git a/configure.in b/configure.in
+index b753a5bb3e..ee7d546984 100644
+--- a/configure.in
++++ b/configure.in
+@@ -134,12 +134,12 @@
+ AC_SUBST(SHLIBFILE)
+ AC_SUBST(SHLIBSONAME)
+ 
+-SHLIBFORLINK='libadns.so'
+-SHLIBSONAME='$(SHLIBFORLINK).$(MAJOR)'
+-SHLIBFILE='$(SHLIBSONAME).$(MINOR)'
++SHLIBFORLINK='libadns.dylib'
++SHLIBSONAME='libadns.$(MAJOR).dylib'
++SHLIBFILE='libadns.$(MAJOR).$(MINOR).dylib'
+ 
+ SHLIBCC='$(CC) $(CFLAGS) -fpic'
+-MKSHLIB_1='$(CC) $(LDFLAGS) -shared -Wl,-soname=$(SHLIBSONAME) -o'
++MKSHLIB_1='$(CC) $(LDFLAGS) -shared -Wl,-install_name,$(libdir)/$(SHLIBFILE) -o'
+ MKSHLIB_2=''
+ MKSHLIB_3='-lc'
+ 
diff --git a/pkgs/by-name/ad/adns/package.nix b/pkgs/by-name/ad/adns/package.nix
index eeb6c07bf11d..70c04d94aadd 100644
--- a/pkgs/by-name/ad/adns/package.nix
+++ b/pkgs/by-name/ad/adns/package.nix
@@ -1,44 +1,48 @@
-{ stdenv, lib, fetchurl, gnum4, gitUpdater }:
+{
+  lib,
+  stdenv,
+  fetchurl,
+  gnum4,
+  autoreconfHook,
+  gitUpdater,
+}:
 
-stdenv.mkDerivation rec {
+stdenv.mkDerivation (finalAttrs: {
   pname = "adns";
   version = "1.6.1";
 
   src = fetchurl {
     urls = [
-      "https://www.chiark.greenend.org.uk/~ian/adns/ftp/adns-${version}.tar.gz"
-      "mirror://gnu/adns/adns-${version}.tar.gz"
+      "https://www.chiark.greenend.org.uk/~ian/adns/ftp/adns-${finalAttrs.version}.tar.gz"
+      "mirror://gnu/adns/adns-${finalAttrs.version}.tar.gz"
     ];
     hash = "sha256-cTizeJt1Br1oP0UdT32FMHepGAO3s12G7GZ/D5zUAc0=";
   };
 
-  nativeBuildInputs = [ gnum4 ];
+  patches = lib.optionals stdenv.hostPlatform.isDarwin [ ./darwin.patch ];
+
+  nativeBuildInputs = [
+    gnum4
+    autoreconfHook
+  ];
 
   configureFlags = lib.optional stdenv.hostPlatform.isStatic "--disable-dynamic";
 
-  preConfigure =
-    lib.optionalString stdenv.hostPlatform.isDarwin "sed -i -e 's|-Wl,-soname=$(SHLIBSONAME)||' configure";
-
-  # Autogenerated headers miss interdependencies in Makefile, fail parallel build:
-  #  https://debbugs.gnu.org/cgi/bugreport.cgi?bug=51329
-  enableParallelBuilding = false;
+  enableParallelBuilding = true;
 
   # https://www.mail-archive.com/nix-dev@cs.uu.nl/msg01347.html for details.
   doCheck = false;
 
-  postInstall = let suffix = lib.versions.majorMinor version;
-  in lib.optionalString stdenv.hostPlatform.isDarwin ''
-    install_name_tool -id $out/lib/libadns.so.${suffix} $out/lib/libadns.so.${suffix}
-  '';
+  doInstallCheck = true;
 
-  # darwin executables fail, but I don't want to fail the 100-500 packages depending on this lib
-  doInstallCheck = !stdenv.hostPlatform.isDarwin;
   installCheckPhase = ''
-    set -eo pipefail
+    runHook preInstallCheck
 
     for prog in $out/bin/*; do
       $prog --help > /dev/null && echo $(basename $prog) shows usage
     done
+
+    runHook postInstallCheck
   '';
 
   passthru.updateScript = gitUpdater {
@@ -46,11 +50,15 @@ stdenv.mkDerivation rec {
     rev-prefix = "adns-";
   };
 
-  meta = with lib; {
+  meta = {
     homepage = "http://www.chiark.greenend.org.uk/~ian/adns/";
-    description = "Asynchronous DNS Resolver Library";
-    license = licenses.lgpl2;
+    description = "Asynchronous DNS resolver library";
+    license = [
+      lib.licenses.gpl3Plus
 
-    platforms = platforms.unix;
+      # `adns.h` only
+      lib.licenses.lgpl2Plus
+    ];
+    platforms = lib.platforms.unix;
   };
-}
+})