diff --git a/pkgs/servers/http/tomcat/jdbc/mysql/builder.sh b/pkgs/servers/http/tomcat/jdbc/mysql/builder.sh
deleted file mode 100644
index 14829c5e85d8..000000000000
--- a/pkgs/servers/http/tomcat/jdbc/mysql/builder.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-source $stdenv/setup
-
-mkdir -p $out/lib
-ln -s $mysql_jdbc/share/java/mysql-connector-java.jar $out/lib/mysql-connector-java.jar
diff --git a/pkgs/servers/http/tomcat/jdbc/mysql/default.nix b/pkgs/servers/http/tomcat/jdbc/mysql/default.nix
index 7585cabccd14..9e6f346a0ec4 100644
--- a/pkgs/servers/http/tomcat/jdbc/mysql/default.nix
+++ b/pkgs/servers/http/tomcat/jdbc/mysql/default.nix
@@ -2,12 +2,19 @@
 
 stdenv.mkDerivation {
   pname = "tomcat-mysql-jdbc";
-  builder = ./builder.sh;
-  buildInputs = [ mysql_jdbc ];
-
-  inherit mysql_jdbc;
   version = mysql_jdbc.version;
 
+  dontUnpack = true;
+
+  installPhase = ''
+    runHook preInstall
+
+    mkdir -p $out/lib
+    ln -s $mysql_jdbc/share/java/mysql-connector-java.jar $out/lib/mysql-connector-java.jar
+
+    runHook postInstall
+  '';
+
   meta = {
     platforms = lib.platforms.unix;
   };