diff --git a/pkgs/applications/kde/kdelibs/default.nix b/pkgs/applications/kde/kdelibs/default.nix
index 8adcd4d1b472..cae1b9b7e7f7 100644
--- a/pkgs/applications/kde/kdelibs/default.nix
+++ b/pkgs/applications/kde/kdelibs/default.nix
@@ -43,7 +43,7 @@ kdeApp {
   meta = {
     platforms = lib.platforms.linux;
     homepage = "http://www.kde.org";
-    licenses = with lib.licenses; [ gpl2 fdl12 lgpl21 ];
+    license = with lib.licenses; [ gpl2 fdl12 lgpl21 ];
     maintainers = [ lib.maintainers.ttuegel ];
   };
 }
diff --git a/pkgs/desktops/gnome-2/bindings/gnome-python/default.nix b/pkgs/desktops/gnome-2/bindings/gnome-python/default.nix
index d7861285cb1e..9e099a17d277 100644
--- a/pkgs/desktops/gnome-2/bindings/gnome-python/default.nix
+++ b/pkgs/desktops/gnome-2/bindings/gnome-python/default.nix
@@ -27,7 +27,7 @@ in stdenv.mkDerivation rec {
     homepage = "http://pygtk.org/";
     description = "Python wrapper for GNOME libraries";
     platforms = platforms.linux;
-    licenses = licenses.lgpl2;
+    license = licenses.lgpl2;
     maintainers = with maintainers; [ qknight ];
   };
 }
diff --git a/pkgs/development/libraries/ctpp2/default.nix b/pkgs/development/libraries/ctpp2/default.nix
index 905121286c81..bb1d4458f50c 100644
--- a/pkgs/development/libraries/ctpp2/default.nix
+++ b/pkgs/development/libraries/ctpp2/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "A high performance templating engine";
     homepage = http://ctpp.havoc.ru;
-    maintiainers = with stdenv.lib.maintainers; [ robbinch ];
+    maintainers = with stdenv.lib.maintainers; [ robbinch ];
     platforms = with stdenv.lib.platforms; linux;
   };
 }
diff --git a/pkgs/development/libraries/libsamplerate/default.nix b/pkgs/development/libraries/libsamplerate/default.nix
index faeeb34d65dd..612dc72cdaf2 100644
--- a/pkgs/development/libraries/libsamplerate/default.nix
+++ b/pkgs/development/libraries/libsamplerate/default.nix
@@ -33,7 +33,7 @@ in stdenv.mkDerivation rec {
     # you can choose one of the following licenses:
     # GPL or a commercial-use license (available at
     # http://www.mega-nerd.com/SRC/libsamplerate-cul.pdf)
-    licenses    = with licenses; [ gpl3.shortName unfree ];
+    license     = with licenses; [ gpl3.shortName unfree ];
     maintainers = with maintainers; [ lovek323 wkennington ];
     platforms   = platforms.all;
   };
diff --git a/pkgs/development/libraries/libtiger/default.nix b/pkgs/development/libraries/libtiger/default.nix
index 58e92f110185..deab30430359 100644
--- a/pkgs/development/libraries/libtiger/default.nix
+++ b/pkgs/development/libraries/libtiger/default.nix
@@ -12,7 +12,6 @@ stdenv.mkDerivation rec {
 
   meta = {
     homepage = http://code.google.com/p/libtiger/;
-    authors = [ "Vincent Penquerc'h" ];
     description = "A rendering library for Kate streams using Pango and Cairo";
     platforms = stdenv.lib.platforms.unix;
   };
diff --git a/pkgs/development/libraries/libytnef/default.nix b/pkgs/development/libraries/libytnef/default.nix
index cbf675af4da5..8af7d5d8797c 100644
--- a/pkgs/development/libraries/libytnef/default.nix
+++ b/pkgs/development/libraries/libytnef/default.nix
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
     inherit (src.meta) homepage;
     description = "Yeraze's TNEF Stream Reader - for winmail.dat files";
     license = licenses.gpl2Plus;
-    platform = platforms.all;
+    platforms = platforms.all;
     maintainers = with maintainers; [ fpletz ];
   };
 }
diff --git a/pkgs/development/libraries/physics/fastnlo/default.nix b/pkgs/development/libraries/physics/fastnlo/default.nix
index 307bf1b27db3..e07583fccb5b 100644
--- a/pkgs/development/libraries/physics/fastnlo/default.nix
+++ b/pkgs/development/libraries/physics/fastnlo/default.nix
@@ -20,7 +20,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   meta = {
-    descritption = "A computer code to create and evaluate fast interpolation tables of pre-computed coefficients in perturbation theory for observables in hadron-induced processes";
+    description = "A computer code to create and evaluate fast interpolation tables of pre-computed coefficients in perturbation theory for observables in hadron-induced processes";
     license      = stdenv.lib.licenses.gpl3;
     homepage     = http://fastnlo.hepforge.org;
     platforms    = stdenv.lib.platforms.unix;
diff --git a/pkgs/development/libraries/speex/default.nix b/pkgs/development/libraries/speex/default.nix
index 199c0d007344..602359965f12 100644
--- a/pkgs/development/libraries/speex/default.nix
+++ b/pkgs/development/libraries/speex/default.nix
@@ -25,7 +25,7 @@ stdenv.mkDerivation rec {
   ];
 
   meta = with stdenv.lib; {
-    hompage = http://www.speex.org/;
+    homepage = http://www.speex.org/;
     description = "An Open Source/Free Software patent-free audio compression format designed for speech";
     license = licenses.bsd3;
     platforms = platforms.unix;
diff --git a/pkgs/development/libraries/speexdsp/default.nix b/pkgs/development/libraries/speexdsp/default.nix
index 9ec7d651ccb2..a96e808a97e4 100644
--- a/pkgs/development/libraries/speexdsp/default.nix
+++ b/pkgs/development/libraries/speexdsp/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
   ] ++ stdenv.lib.optional stdenv.isAarch64 "--disable-neon";
 
   meta = with stdenv.lib; {
-    hompage = http://www.speex.org/;
+    homepage = http://www.speex.org/;
     description = "An Open Source/Free Software patent-free audio compression format designed for speech";
     license = licenses.bsd3;
     platforms = platforms.unix;
diff --git a/pkgs/development/misc/avr-gcc-with-avr-libc/default.nix b/pkgs/development/misc/avr-gcc-with-avr-libc/default.nix
index 237c4e4027f1..1035757fb80e 100644
--- a/pkgs/development/misc/avr-gcc-with-avr-libc/default.nix
+++ b/pkgs/development/misc/avr-gcc-with-avr-libc/default.nix
@@ -71,7 +71,6 @@ stdenv.mkDerivation {
     description = "AVR development environment including binutils, avr-gcc and avr-libc";
     # I've tried compiling the packages separately.. too much hassle. This just works. Fine.
     license =  ["GPL" "LGPL"]; # see single packages ..
-    homepage = []; # dito
     platforms = platforms.linux;
   };
 }
diff --git a/pkgs/development/python-modules/astroid/default.nix b/pkgs/development/python-modules/astroid/default.nix
index 76f58e695f28..a690399118d8 100644
--- a/pkgs/development/python-modules/astroid/default.nix
+++ b/pkgs/development/python-modules/astroid/default.nix
@@ -28,7 +28,7 @@
       description = "A abstract syntax tree for Python with inference support";
       homepage = http://bitbucket.org/logilab/astroid;
       license = licenses.lgpl2;
-      platform = platforms.all;
+      platforms = platforms.all;
       maintainers = with maintainers; [ nand0p ]; 
     };
   }
diff --git a/pkgs/development/python-modules/pylint/default.nix b/pkgs/development/python-modules/pylint/default.nix
index 844d2e229547..67604c3f2537 100644
--- a/pkgs/development/python-modules/pylint/default.nix
+++ b/pkgs/development/python-modules/pylint/default.nix
@@ -35,7 +35,7 @@
     meta = with stdenv.lib; {
       homepage = http://www.logilab.org/project/pylint;
       description = "A bug and style checker for Python";
-      platform = platforms.all;
+      platforms = platforms.all;
       license = licenses.gpl1Plus;
       maintainers = with maintainers; [ nand0p ];
     };
diff --git a/pkgs/os-specific/linux/bridge-utils/default.nix b/pkgs/os-specific/linux/bridge-utils/default.nix
index 2fdf728ef4e1..4d4a51b984a5 100644
--- a/pkgs/os-specific/linux/bridge-utils/default.nix
+++ b/pkgs/os-specific/linux/bridge-utils/default.nix
@@ -22,7 +22,7 @@ stdenv.mkDerivation rec {
 
   meta = {
     description = "http://sourceforge.net/projects/bridge/";
-    homepage = [ "http://www.linux-foundation.org/en/Net:Bridge/" "http://sourceforge.net/projects/bridge/" ];
+    homepage = "http://www.linux-foundation.org/en/Net:Bridge/";
     license = "GPL";
     platforms = stdenv.lib.platforms.linux;
   };
diff --git a/pkgs/os-specific/linux/kbd/default.nix b/pkgs/os-specific/linux/kbd/default.nix
index a3f21b51b061..6e8893cc37d6 100644
--- a/pkgs/os-specific/linux/kbd/default.nix
+++ b/pkgs/os-specific/linux/kbd/default.nix
@@ -43,6 +43,6 @@ stdenv.mkDerivation rec {
     homepage = ftp://ftp.altlinux.org/pub/people/legion/kbd/;
     description = "Linux keyboard utilities and keyboard maps";
     platforms = platforms.linux;
-    licenses = licenses.gpl2Plus;
+    license = licenses.gpl2Plus;
   };
 }
diff --git a/pkgs/os-specific/linux/lvm2/default.nix b/pkgs/os-specific/linux/lvm2/default.nix
index 9645a2d16b52..eb4d1ab04238 100644
--- a/pkgs/os-specific/linux/lvm2/default.nix
+++ b/pkgs/os-specific/linux/lvm2/default.nix
@@ -60,7 +60,7 @@ stdenv.mkDerivation {
 
   meta = {
     homepage = http://sourceware.org/lvm2/;
-    descriptions = "Tools to support Logical Volume Management (LVM) on Linux";
+    description = "Tools to support Logical Volume Management (LVM) on Linux";
     platforms = stdenv.lib.platforms.linux;
     maintainers = with stdenv.lib.maintainers; [raskin];
     inherit version;
diff --git a/pkgs/servers/pulseaudio/default.nix b/pkgs/servers/pulseaudio/default.nix
index 680c9dfcb601..ba514ccdbcbc 100644
--- a/pkgs/servers/pulseaudio/default.nix
+++ b/pkgs/servers/pulseaudio/default.nix
@@ -126,7 +126,7 @@ stdenv.mkDerivation rec {
   meta = {
     description = "Sound server for POSIX and Win32 systems";
     homepage    = http://www.pulseaudio.org/;
-    licenses    = lib.licenses.lgpl2Plus;
+    license     = lib.licenses.lgpl2Plus;
     maintainers = with lib.maintainers; [ lovek323 wkennington ];
     platforms   = lib.platforms.unix;
 
diff --git a/pkgs/stdenv/generic/default.nix b/pkgs/stdenv/generic/default.nix
index 177eeee93837..abb08dfb98cd 100644
--- a/pkgs/stdenv/generic/default.nix
+++ b/pkgs/stdenv/generic/default.nix
@@ -18,7 +18,7 @@ let lib = import ../../../lib; in lib.makeOverridable (
 
 let
 
-  shouldCheckMeta = config.checkMeta or false;
+  shouldCheckMeta = config.checkMeta or true;
 
   allowUnfree = config.allowUnfree or false || builtins.getEnv "NIXPKGS_ALLOW_UNFREE" == "1";
 
@@ -221,12 +221,15 @@ let
 
         # Weirder stuff that doesn't appear in the documentation?
         version = str;
+        tag = str;
         updateWalker = bool;
         executables = listOf str;
         outputsToInstall = listOf str;
         position = str;
         repositories = attrsOf str;
         isBuildPythonPackage = platforms;
+        schedulingPriority = str;
+        downloadURLRegexp = str;
       };
 
       checkMetaAttr = k: v:
diff --git a/pkgs/tools/inputmethods/anthy/default.nix b/pkgs/tools/inputmethods/anthy/default.nix
index 4fbd0965c785..c11fae3888e4 100644
--- a/pkgs/tools/inputmethods/anthy/default.nix
+++ b/pkgs/tools/inputmethods/anthy/default.nix
@@ -5,7 +5,7 @@ stdenv.mkDerivation {
 
   meta = with stdenv.lib; {
     description = "Hiragana text to Kana Kanji mixed text Japanese input method";
-    homepace    = http://sourceforge.jp/projects/anthy/;
+    homepage    = http://sourceforge.jp/projects/anthy/;
     license     = licenses.gpl2Plus;
     maintainers = with maintainers; [ ericsagnes ];
     platforms   = platforms.linux;
diff --git a/pkgs/tools/package-management/gx/go/default.nix b/pkgs/tools/package-management/gx/go/default.nix
index 877d5c6540a0..aa5acfa22d58 100644
--- a/pkgs/tools/package-management/gx/go/default.nix
+++ b/pkgs/tools/package-management/gx/go/default.nix
@@ -29,6 +29,6 @@ buildGoPackage rec {
     description = "A tool for importing go packages into gx";
     homepage = https://github.com/whyrusleeping/gx-go;
     license = licenses.mit;
-    maintainer = with maintainers; [ zimbatm ];
+    maintainers = with maintainers; [ zimbatm ];
   };
 }
diff --git a/pkgs/tools/typesetting/tex/tetex/default.nix b/pkgs/tools/typesetting/tex/tetex/default.nix
index 83bead83ea3e..313474745d10 100644
--- a/pkgs/tools/typesetting/tex/tetex/default.nix
+++ b/pkgs/tools/typesetting/tex/tetex/default.nix
@@ -48,7 +48,7 @@ stdenv.mkDerivation {
   meta = with stdenv.lib; {
     description  = "A full-featured (La)TeX distribution";
     homepage     = http://www.tug.org/tetex/;
-    matintainers = with maintainers; [ lovek323 ];
+    maintainers  = with maintainers; [ lovek323 ];
     platforms    = platforms.unix;
     hydraPlatforms = [];
   };
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 389e11e1d25f..ec6483972683 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1176,7 +1176,7 @@ in {
     };
 
     meta = with pkgs.stdenv.lib; {
-      descriptions = "Library for reading, writing and rewriting python AST";
+      description = "Library for reading, writing and rewriting python AST";
       homepage = https://github.com/berkerpeksag/astor;
       license = licenses.bsd3;
       maintainers = with maintainers; [ nixy ];
@@ -5214,7 +5214,7 @@ in {
 
     meta = {
       license = licenses.mit;
-      website = "https://pypi.python.org/pypi/pytest-cache/";
+      homepage = "https://pypi.python.org/pypi/pytest-cache/";
       description = "pytest plugin with mechanisms for caching across test runs";
     };
   };
@@ -5232,7 +5232,7 @@ in {
 
     meta = {
       license = licenses.mit;
-      website = https://pypi.python.org/pypi/pytest-catchlog/;
+      homepage = https://pypi.python.org/pypi/pytest-catchlog/;
       description = "py.test plugin to catch log messages. This is a fork of pytest-capturelog.";
     };
   };
@@ -5308,7 +5308,7 @@ in {
 
     meta = {
       license = licenses.mit;
-      website = "https://pypi.python.org/pypi/pytest-flakes";
+      homepage = "https://pypi.python.org/pypi/pytest-flakes";
       description = "pytest plugin to check source code with pyflakes";
     };
   };
@@ -5354,7 +5354,7 @@ in {
 
     meta = {
       license = licenses.mit;
-      website = "https://pypi.python.org/pypi/pytest-pep8";
+      homepage = "https://pypi.python.org/pypi/pytest-pep8";
       description = "pytest plugin to check PEP8 requirements";
     };
   };
@@ -5419,7 +5419,7 @@ in {
 
     meta = {
       license = licenses.asl20;
-      website = "https://pypi.python.org/pypi/pytest-quickcheck";
+      homepage = "https://pypi.python.org/pypi/pytest-quickcheck";
       description = "pytest plugin to generate random data inspired by QuickCheck";
     };
   };
@@ -8164,7 +8164,7 @@ in {
       description = "Cross-platform Bluetooth API for Python";
       maintainers = with maintainers; [ leenaars ];
       license = licenses.gpl3;
-      platform = platforms.all;
+      platforms = platforms.all;
     };
   };
 
@@ -8799,7 +8799,7 @@ in {
     meta = {
       description = "A Python-based build/distribution/deployment scripting tool";
       homepage    = http://github.com/paver/paver;
-      matinainers = with maintainers; [ lovek323 ];
+      maintainers = with maintainers; [ lovek323 ];
       platforms   = platforms.unix;
     };
   };
@@ -9089,7 +9089,7 @@ in {
       description = "Call graph visualizations for Python applications";
       maintainers = with maintainers; [ auntie ];
       license = licenses.gpl2;
-      platform = platforms.all;
+      platforms = platforms.all;
     };
   };
 
@@ -9225,7 +9225,7 @@ in {
       description = "Python port of libaxolotl-android";
       maintainers = with maintainers; [ abbradar ];
       license = licenses.gpl3;
-      platform = platforms.all;
+      platforms = platforms.all;
     };
   };
 
@@ -9243,7 +9243,7 @@ in {
       description = "Curve25519 with ed25519 signatures";
       maintainers = with maintainers; [ abbradar ];
       license = licenses.gpl3;
-      platform = platforms.all;
+      platforms = platforms.all;
     };
   };
 
@@ -9268,7 +9268,7 @@ in {
       description = "Postfix policy engine for Sender Policy Framework (SPF) checking";
       maintainers = with maintainers; [ abbradar ];
       license = licenses.asl20;
-      platform = platforms.all;
+      platforms = platforms.all;
     };
   };
 
@@ -9473,7 +9473,7 @@ in {
       description = "Python API for Sendmail Milters (SPF)";
       maintainers = with maintainers; [ abbradar ];
       license = licenses.gpl2;
-      platform = platforms.all;
+      platforms = platforms.all;
     };
   };
 
@@ -9674,7 +9674,7 @@ in {
       homepage = "http://sarge.readthedocs.org/";
       description = "A wrapper for subprocess which provides command pipeline functionality";
       license = licenses.bsd3;
-      platform = platforms.all;
+      platforms = platforms.all;
       maintainers = with maintainers; [ abbradar ];
     };
   };
@@ -14590,7 +14590,7 @@ in {
     buildInputs = with self; [nose];
 
     meta = {
-      decription = "The fastest markdown parser in pure Python";
+      description = "The fastest markdown parser in pure Python";
       homepage = https://github.com/lepture/mistune;
       license = licenses.bsd3;
     };
@@ -15565,7 +15565,7 @@ in {
     propagatedBuildInputs = with self ; [ aiodns pyasn1 pkgs.gnupg1 pyasn1-modules];
 
     meta = {
-      meta = "Elegant Python library for XMPP";
+      description = "Elegant Python library for XMPP";
       license = licenses.mit;
       homepage = https://dev.louiz.org/projects/slixmpp;
     };
@@ -22821,7 +22821,7 @@ in {
     buildInputs = with self; [ appdirs ];
 
     meta = with pkgs.stdenv.lib; {
-      descriptions = "A python Lex/Yacc that works with RPython";
+      description = "A python Lex/Yacc that works with RPython";
       homepage = https://github.com/alex/rply;
       license = licenses.bsd3;
       maintainers = with maintainers; [ nixy ];
@@ -25666,7 +25666,7 @@ in {
 
     meta = {
       description = "Quick Response code generation for Python";
-      home = "https://pypi.python.org/pypi/qrcode";
+      homepage = "https://pypi.python.org/pypi/qrcode";
       license = licenses.bsd3;
     };
   };