diff --git a/pkgs/desktops/plasma-5.2/default.nix b/pkgs/desktops/plasma-5.2/default.nix
index 8a7733299b5..7a7a48a4d82 100644
--- a/pkgs/desktops/plasma-5.2/default.nix
+++ b/pkgs/desktops/plasma-5.2/default.nix
@@ -38,7 +38,7 @@ let
     {
       LibBlueDevil = pkgs.libbluedevil;
       PolkitQt5-1 = pkgs.polkit_qt5.override { inherit qt5; };
-      PopplerQt5 = pkgs.poppler_qt.override { inherit qt5; };
+      PopplerQt5 = pkgs.poppler_qt5.override { inherit qt5; };
     } //
     # packages from nixpkgs
     (with pkgs;
diff --git a/pkgs/development/libraries/libdbi-drivers/default.nix b/pkgs/development/libraries/libdbi-drivers/default.nix
index 128553705e0..4e122028ec0 100644
--- a/pkgs/development/libraries/libdbi-drivers/default.nix
+++ b/pkgs/development/libraries/libdbi-drivers/default.nix
@@ -11,7 +11,7 @@ stdenv.mkDerivation rec {
     sha256 = "0m680h8cc4428xin4p733azysamzgzcmv4psjvraykrsaz6ymlj3";
   };
 
-  buildInputs = [ libdbi mysql.lib sqlite postgresql ];
+  buildInputs = [ libdbi sqlite postgresql ] ++ optional (mysql != null) mysql;
 
   postPatch = ''
     sed -i '/SQLITE3_LIBS/ s/-lsqlite/-lsqlite3/' configure;
diff --git a/pkgs/tools/graphics/pdf2svg/default.nix b/pkgs/tools/graphics/pdf2svg/default.nix
index 591a85c2447..826f1a56055 100644
--- a/pkgs/tools/graphics/pdf2svg/default.nix
+++ b/pkgs/tools/graphics/pdf2svg/default.nix
@@ -8,7 +8,7 @@ stdenv.mkDerivation {
     sha256 = "1jy6iqwwvd7drcybmdlmnc8m970f82fd7fisa8ha5zh13p49r8n2";
   };
 
-  buildInputs = [ cairo pkgconfig poppler.poppler_glib gtk ];
+  buildInputs = [ cairo pkgconfig poppler gtk ];
 
   meta = { 
     description = "PDF converter to SVG format";
diff --git a/pkgs/tools/system/rsyslog/default.nix b/pkgs/tools/system/rsyslog/default.nix
index a9fabd19f47..9966141bdfd 100644
--- a/pkgs/tools/system/rsyslog/default.nix
+++ b/pkgs/tools/system/rsyslog/default.nix
@@ -20,10 +20,10 @@ stdenv.mkDerivation rec {
 
   buildInputs = [
     pkgconfig libestr json_c zlib pythonPackages.docutils
-    krb5 jemalloc mysql.lib postgresql libdbi net_snmp libuuid curl gnutls
+    krb5 jemalloc postgresql libdbi net_snmp libuuid curl gnutls
     libgcrypt liblognorm openssl librelp libgt liblogging libnet hadoop rdkafka
     libmongo-client czmq rabbitmq-c hiredis
-  ] ++ stdenv.lib.optional stdenv.isLinux systemd;
+  ] ++ stdenv.lib.optional stdenv.isLinux systemd ++ stdenv.lib.optional (mysql != null) mysql.lib;
 
   configureFlags = [
     "--sysconfdir=/etc"
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 0d724e21080..b2cebf63fff 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -2037,7 +2037,7 @@ self : let callPackage = x : y : modifyPrio (newScope self x y); in
   pop3client = callPackage ../development/libraries/haskell/pop3-client {};
 
   poppler = callPackage ../development/libraries/haskell/poppler {
-    popplerGlib = pkgs.poppler.poppler_glib;
+    popplerGlib = pkgs.poppler;
     libc = pkgs.stdenv.cc.libc;
   };