diff --git a/pkgs/applications/audio/audio-recorder/default.nix b/pkgs/applications/audio/audio-recorder/default.nix
index 283d4c7d493..c482e44e7aa 100644
--- a/pkgs/applications/audio/audio-recorder/default.nix
+++ b/pkgs/applications/audio/audio-recorder/default.nix
@@ -34,9 +34,9 @@ stdenv.mkDerivation rec {
   '';
 
   preFixup = ''
-    gappsWrapperArgs+=('--prefix XDG_DATA_DIRS : "$out/share:$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH"'
-      '--prefix GST_PLUGIN_SYSTEM_PATH_1_0 : "$GST_PLUGIN_SYSTEM_PATH_1_0"'
-      '--prefix GIO_EXTRA_MODULES : "${stdenv.lib.getLib gnome3.dconf}/lib/gio/modules"')
+    gappsWrapperArgs+=(--prefix XDG_DATA_DIRS : $out/share:$XDG_ICON_DIRS:$GSETTINGS_SCHEMAS_PATH
+      --prefix GST_PLUGIN_SYSTEM_PATH_1_0 : $GST_PLUGIN_SYSTEM_PATH_1_0
+      --prefix GIO_EXTRA_MODULES : ${stdenv.lib.getLib gnome3.dconf}/lib/gio/modules)
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/applications/audio/clerk/default.nix b/pkgs/applications/audio/clerk/default.nix
index babbcc51e40..4da2228c6c1 100644
--- a/pkgs/applications/audio/clerk/default.nix
+++ b/pkgs/applications/audio/clerk/default.nix
@@ -13,13 +13,11 @@ stdenv.mkDerivation {
 
   buildInputs = [ makeWrapper pythonPackages.mpd2 ];
 
-  buildPhase = ''
-    echo skipping build phase...
-  '';
+  dontBuild = true;
 
   installPhase = ''
     DESTDIR=$out PREFIX=/ make install
-    wrapProgram $out/bin/clerk $out/bin/clerk \
+    wrapProgram $out/bin/clerk \
       --prefix PATH : "${stdenv.lib.makeBinPath [ rofi mpc_cli perl utillinux libnotify ]}"
   '';
 
diff --git a/pkgs/applications/misc/gnuradio/default.nix b/pkgs/applications/misc/gnuradio/default.nix
index 8218285c5fb..e10cb30d187 100644
--- a/pkgs/applications/misc/gnuradio/default.nix
+++ b/pkgs/applications/misc/gnuradio/default.nix
@@ -53,7 +53,7 @@ stdenv.mkDerivation rec {
   postInstall = ''
     printf "backend : Qt4Agg\n" > "$out/share/gnuradio/matplotlibrc"
 
-    for file in "$out"/bin/* "$out"/share/gnuradio/examples/*/*.py; do
+    for file in $(find $out/bin $out/share/gnuradio/examples -type f -executable); do
         wrapProgram "$file" \
             --prefix PYTHONPATH : $PYTHONPATH:$(toPythonPath "$out") \
             --set MATPLOTLIBRC "$out/share/gnuradio"
diff --git a/pkgs/applications/misc/gnuradio/wrapper.nix b/pkgs/applications/misc/gnuradio/wrapper.nix
index cc8dbde273b..db2b453913f 100644
--- a/pkgs/applications/misc/gnuradio/wrapper.nix
+++ b/pkgs/applications/misc/gnuradio/wrapper.nix
@@ -11,10 +11,10 @@ stdenv.mkDerivation {
     mkdir -p $out/bin
     ln -s "${gnuradio}"/bin/* $out/bin/
 
-    for file in "$out"/bin/*; do
+    for file in $(find $out/bin -type f -executable); do
         wrapProgram "$file" \
             --prefix PYTHONPATH : ${stdenv.lib.concatStringsSep ":"
-                                      (map (path: "$(toPythonPath ${path})") extraPackages)} \
+                                     (map (path: "$(toPythonPath ${path})") extraPackages)} \
             --prefix GRC_BLOCKS_PATH : ${makeSearchPath "share/gnuradio/grc/blocks" extraPackages}
     done
 
diff --git a/pkgs/applications/office/libreoffice/still.nix b/pkgs/applications/office/libreoffice/still.nix
index 7c122c0725a..7f564379c66 100644
--- a/pkgs/applications/office/libreoffice/still.nix
+++ b/pkgs/applications/office/libreoffice/still.nix
@@ -163,7 +163,7 @@ in stdenv.mkDerivation rec {
 
     mkdir -p "$out/share/gsettings-schemas/collected-for-libreoffice/glib-2.0/schemas/"
 
-    for a in sbase scalc sdraw smath swriter spadmin simpress soffice; do
+    for a in sbase scalc sdraw smath swriter simpress soffice; do
       ln -s $out/lib/libreoffice/program/$a $out/bin/$a
       wrapProgram "$out/bin/$a" \
          --prefix XDG_DATA_DIRS : \
diff --git a/pkgs/applications/window-managers/sawfish/default.nix b/pkgs/applications/window-managers/sawfish/default.nix
index 0f362e02ebf..37596f5f212 100644
--- a/pkgs/applications/window-managers/sawfish/default.nix
+++ b/pkgs/applications/window-managers/sawfish/default.nix
@@ -32,8 +32,8 @@ stdenv.mkDerivation rec {
   postInstall = ''
     for i in $out/lib/sawfish/sawfish-menu $out/bin/sawfish-about  $out/bin/sawfish-client $out/bin/sawfish-config $out/bin/sawfish; do
       wrapProgram $i \
-        --prefix REP_DL_LOAD_PATH "$out/lib/rep" \
-	--set REP_LOAD_PATH "$out/share/sawfish/lisp"
+        --prefix REP_DL_LOAD_PATH : "$out/lib/rep" \
+        --set REP_LOAD_PATH "$out/share/sawfish/lisp"
     done
   '';
 
diff --git a/pkgs/build-support/cc-wrapper/default.nix b/pkgs/build-support/cc-wrapper/default.nix
index 01d1bbd7a5d..905135e7adc 100644
--- a/pkgs/build-support/cc-wrapper/default.nix
+++ b/pkgs/build-support/cc-wrapper/default.nix
@@ -150,7 +150,7 @@ stdenv.mkDerivation {
         echo $dynamicLinker > $out/nix-support/dynamic-linker
 
     '' + (if targetPlatform.isDarwin then ''
-        printf "export LD_DYLD_PATH+=%q\n" "$dynamicLinker" >> $out/nix-support/setup-hook
+        printf "export LD_DYLD_PATH=%q\n" "$dynamicLinker" >> $out/nix-support/setup-hook
     '' else ''
         if [ -e ${libc_lib}/lib/32/ld-linux.so.2 ]; then
           echo ${libc_lib}/lib/32/ld-linux.so.2 > $out/nix-support/dynamic-linker-m32
diff --git a/pkgs/development/tools/misc/csmith/default.nix b/pkgs/development/tools/misc/csmith/default.nix
index 38772a4dd89..9a8c24fa168 100644
--- a/pkgs/development/tools/misc/csmith/default.nix
+++ b/pkgs/development/tools/misc/csmith/default.nix
@@ -22,7 +22,8 @@ stdenv.mkDerivation rec {
       --replace '../compiler_test.pl' $out/bin/compiler_test.pl \
       --replace '../$CONFIG_FILE' '$CONFIG_FILE'
 
-    wrapProgram $out/bin/launchn.pl --prefix PERL5LIB : "$PERL5LIB" $out/bin/launchn.pl
+    wrapProgram $out/bin/launchn.pl \
+      --prefix PERL5LIB : "$PERL5LIB"
 
     mkdir -p $out/share/csmith
     mv $out/bin/compiler_test.in $out/share/csmith/
diff --git a/pkgs/os-specific/linux/edac-utils/default.nix b/pkgs/os-specific/linux/edac-utils/default.nix
index b24099f9599..13c1218e90c 100644
--- a/pkgs/os-specific/linux/edac-utils/default.nix
+++ b/pkgs/os-specific/linux/edac-utils/default.nix
@@ -25,9 +25,7 @@ stdenv.mkDerivation {
 
   postInstall = ''
     wrapProgram "$out/sbin/edac-ctl" \
-      --set PATH : "" \
-      --prefix PATH : "${dmidecode}/bin" \
-      --prefix PATH : "${kmod}/bin"
+      --set PATH ${stdenv.lib.makeBinPath [ dmidecode kmod ]}
   '';
 
   meta = with stdenv.lib; {
diff --git a/pkgs/stdenv/generic/setup.sh b/pkgs/stdenv/generic/setup.sh
index 81ed1c635e1..b6bca3e1f56 100644
--- a/pkgs/stdenv/generic/setup.sh
+++ b/pkgs/stdenv/generic/setup.sh
@@ -750,7 +750,7 @@ configurePhase() {
 buildPhase() {
     runHook preBuild
 
-    if [[ -z "$makeFlags" && ! ( -n "$makefile" || -e Makefile || -e makefile || -e GNUmakefile[[ ) ]]; then
+    if [[ -z "$makeFlags" && ! ( -n "$makefile" || -e Makefile || -e makefile || -e GNUmakefile ) ]]; then
         echo "no Makefile, doing nothing"
     else
         # See https://github.com/NixOS/nixpkgs/pull/1354#issuecomment-31260409
diff --git a/pkgs/tools/misc/system-config-printer/default.nix b/pkgs/tools/misc/system-config-printer/default.nix
index 04aa838270c..fbef31fb546 100644
--- a/pkgs/tools/misc/system-config-printer/default.nix
+++ b/pkgs/tools/misc/system-config-printer/default.nix
@@ -43,7 +43,7 @@ stdenv.mkDerivation rec {
     ''
       buildPythonPath "$out $pythonPath"
       gappsWrapperArgs+=(
-        --prefix PATH "$program_PATH"
+        --prefix PATH : "$program_PATH"
         --set CUPS_DATADIR "${cups-filters}/share/cups"
       )
 
diff --git a/pkgs/tools/networking/curl/default.nix b/pkgs/tools/networking/curl/default.nix
index daf5a19b01c..c9b70ee0e64 100644
--- a/pkgs/tools/networking/curl/default.nix
+++ b/pkgs/tools/networking/curl/default.nix
@@ -21,11 +21,11 @@ assert scpSupport -> libssh2 != null;
 assert c-aresSupport -> c-ares != null;
 
 stdenv.mkDerivation rec {
-  name = "curl-7.54.1";
+  name = "curl-7.55.0";
 
   src = fetchurl {
     url = "http://curl.haxx.se/download/${name}.tar.bz2";
-    sha256 = "1815iz5a7qghipjcl7s97hk4jqh4f3kqc487xi20rvh1s3r4vz7x";
+    sha256 = "1cg5h0klsx887qd4wpkk5bpkbw1bfc4q7adsrai71zhmdzn6j7dg";
   };
 
   outputs = [ "bin" "dev" "out" "man" "devdoc" ];
@@ -72,6 +72,10 @@ stdenv.mkDerivation rec {
   CXXCPP = "g++ -E";
 
   postInstall = ''
+    pushd docs/libcurl
+    make install
+    popd
+
     moveToOutput bin/curl-config "$dev"
     sed '/^dependency_libs/s|${libssh2.dev}|${libssh2.out}|' -i "$out"/lib/*.la
   '' + stdenv.lib.optionalString gnutlsSupport ''